[Index]
Monthly Global Tropical Cyclone Tracks August 1999
[Summaries and Track Data] [Prepared by Gary Padgett]
| Tropical
Cyclones
[Index] |
Monthly Global Tropical Cyclone Tracks August 1999 [Summaries and Track Data] [Prepared by Gary Padgett] |
GLOBAL TROPICAL CYCLONE TRACKS - AUGUST 1999
ATLANTIC (ATL) - North Atlantic Ocean, Caribbean Sea, Gulf of Mexico
NOTE: The tracking and intensity information for Atlantic Basin
tropical cyclones is based upon operational advisories from
the Tropical Prediction Center/National Hurricane Center,
located in Miami, Florida, USA. The MSW are based on a
1-min averaging period, which is used by all U.S. civilian
and military weather services for tropical cyclone warnings.
*************************************************************************
Storm Name: BRET Cyclone Number: 03 Basin: ATL
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 18 1800 20.0 N 93.5 W 1010 30
99 AUG 19 0000 19.6 N 94.2 W 1007 30
99 AUG 19 0600 19.9 N 93.7 W 1007 30
99 AUG 19 1200 19.5 N 94.4 W 1008 30
99 AUG 19 1800 19.8 N 94.6 W 1006 35
99 AUG 20 0000 19.8 N 94.7 W 1000 40
99 AUG 20 0600 19.9 N 94.6 W 999 45
99 AUG 20 1200 20.7 N 94.6 W 993 55
99 AUG 20 1800 21.1 N 94.4 W 992 55
99 AUG 21 0000 22.0 N 94.4 W 981 65
99 AUG 21 0600 22.5 N 94.6 W 980 80
99 AUG 21 1200 23.2 N 94.8 W 978 80
99 AUG 21 1800 23.8 N 95.0 W 976 90
99 AUG 22 0000 24.6 N 95.1 W 953 115
99 AUG 22 0600 25.6 N 95.5 W 948 120
99 AUG 22 1200 26.2 N 96.1 W 944 120
99 AUG 22 1800 26.6 N 96.8 W 946 120
99 AUG 23 0000 26.9 N 97.4 W 955 100
99 AUG 23 0600 27.0 N 97.9 W 970 75
99 AUG 23 1200 27.3 N 98.3 W 985 40
99 AUG 23 1800 27.6 N 98.8 W 996 35
99 AUG 23 2300 28.0 N 99.5 W 1000 25 See Note
99 AUG 24 0430 28.3 N 99.8 W 1006 20
99 AUG 24 1100 28.0 N 100.6 W 1006 20
99 AUG 24 1645 27.9 N 102.0 W 1006 15
99 AUG 24 2245 27.6 N 102.9 W 1008 15
99 AUG 25 1630 27.6 N 103.8 W 1008 15
Note: Tracking information from 23/2300 UTC onward was taken from
bulletins issued by the Hydrometeorological Prediction Center in Camp
Springs, Maryland. This information was sent to me by John Wallace of
San Antonio, Texas. A special thanks to John for sending me this portion
of Bret's track.
*************************************************************************
Storm Name: CINDY Cyclone Number: 04 Basin: ATL
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 19 0000 13.5 N 18.9 W 1003 30
99 AUG 19 0600 13.9 N 20.7 W 1003 30
99 AUG 19 1200 14.0 N 21.6 W 1003 30
99 AUG 19 1800 14.0 N 22.3 W 1003 30
99 AUG 20 0000 14.0 N 23.2 W 1002 30
99 AUG 20 0600 13.6 N 24.2 W 1002 30
99 AUG 20 1200 13.8 N 25.0 W 1002 30
99 AUG 20 1800 13.6 N 26.6 W 1002 35
99 AUG 21 0000 13.6 N 27.8 W 1001 40
99 AUG 21 0600 13.7 N 28.7 W 997 50
99 AUG 21 1200 13.9 N 29.4 W 994 55
99 AUG 21 1800 14.1 N 30.9 W 990 60
99 AUG 22 0000 14.2 N 32.0 W 987 65
99 AUG 22 0600 14.4 N 32.8 W 987 65
99 AUG 22 1200 14.4 N 32.3 W 987 65
99 AUG 22 1800 14.6 N 33.0 W 994 55
99 AUG 23 0000 14.9 N 33.7 W 997 50
99 AUG 23 0600 15.0 N 34.5 W 997 50
99 AUG 23 1200 15.4 N 35.9 W 997 50
99 AUG 23 1800 16.1 N 36.8 W 997 50
99 AUG 24 0000 16.5 N 38.1 W 997 50
99 AUG 24 0600 17.0 N 39.1 W 997 50
99 AUG 24 1200 17.6 N 41.1 W 997 50
99 AUG 24 1800 17.5 N 42.6 W 994 55
99 AUG 25 0000 17.7 N 43.8 W 994 55
99 AUG 25 0600 18.4 N 44.7 W 994 55
99 AUG 25 1200 19.1 N 46.2 W 994 55
99 AUG 25 1800 20.2 N 47.1 W 990 60
99 AUG 26 0000 21.7 N 48.0 W 987 65
99 AUG 26 0600 22.8 N 49.8 W 987 65
99 AUG 26 1200 24.3 N 50.5 W 987 65
99 AUG 26 1800 25.6 N 52.3 W 979 75
99 AUG 27 0000 26.5 N 53.1 W 978 80
99 AUG 27 0600 27.4 N 54.4 W 978 80
99 AUG 27 1200 27.7 N 55.4 W 970 90
99 AUG 27 1800 28.3 N 56.2 W 970 90
99 AUG 28 0000 28.7 N 56.9 W 961 100
99 AUG 28 0600 29.3 N 57.6 W 948 115
99 AUG 28 1200 30.0 N 58.0 W 944 120
99 AUG 28 1800 30.8 N 58.5 W 944 120
99 AUG 29 0000 31.5 N 58.5 W 944 120
99 AUG 29 0600 32.4 N 58.3 W 952 110
99 AUG 29 1200 33.0 N 58.2 W 965 95
99 AUG 29 1800 33.8 N 57.5 W 968 90
99 AUG 30 0000 34.3 N 56.4 W 970 90
99 AUG 30 0600 34.7 N 55.1 W 970 90
99 AUG 30 1200 35.4 N 54.9 W 975 80
99 AUG 30 1800 36.0 N 54.4 W 975 80
99 AUG 31 0000 37.6 N 53.1 W 980 70
99 AUG 31 0600 37.9 N 50.8 W 990 60
99 AUG 31 1200 40.8 N 48.1 W 995 45 See Note
Note: Shortly after 31/1200 UTC Cindy was absorbed by a large North
Atlantic extratropical cyclone.
*************************************************************************
Storm Name: DENNIS Cyclone Number: 05 Basin: ATL
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 24 0000 21.0 N 68.0 W 1008 30
99 AUG 24 0600 21.3 N 68.7 W 1008 30
99 AUG 24 1200 22.0 N 70.5 W 1008 30
99 AUG 24 1800 23.0 N 71.0 W 1008 45
99 AUG 25 0000 22.8 N 71.5 W 1005 40
99 AUG 25 0600 23.0 N 72.4 W 1008 40
99 AUG 25 1200 23.2 N 72.5 W 1004 40
99 AUG 25 1800 23.1 N 72.1 W 1000 55
99 AUG 26 0000 23.5 N 72.5 W 998 55
99 AUG 26 0600 23.8 N 73.1 W 995 65
99 AUG 26 1200 24.1 N 73.7 W 994 65
99 AUG 26 1800 24.5 N 74.1 W 989 70
99 AUG 27 0000 24.8 N 74.3 W 992 70
99 AUG 27 0600 25.2 N 75.1 W 988 70
99 AUG 27 1200 25.6 N 75.6 W 988 70
99 AUG 27 1800 25.9 N 76.1 W 991 70
99 AUG 28 0000 26.0 N 76.3 W 980 70
99 AUG 28 0600 26.5 N 76.7 W 975 70
99 AUG 28 1200 27.0 N 77.0 W 972 85
99 AUG 28 1800 27.7 N 77.4 W 969 90
99 AUG 29 0000 28.4 N 77.7 W 969 90
99 AUG 29 0600 29.0 N 77.9 W 970 85
99 AUG 29 1200 30.0 N 78.4 W 971 90
99 AUG 29 1800 30.8 N 78.4 W 967 90
99 AUG 30 0000 31.9 N 78.1 W 963 90
99 AUG 30 0600 32.7 N 77.6 W 963 85
99 AUG 30 1200 33.5 N 76.5 W 965 85
99 AUG 30 1800 34.3 N 74.8 W 966 80
99 AUG 31 0000 34.9 N 73.6 W 974 80
99 AUG 31 0600 35.1 N 72.9 W 977 75
99 AUG 31 1200 35.2 N 72.8 W 983 65
99 AUG 31 1800 35.1 N 73.3 W 983 65
99 SEP 01 0000 35.3 N 73.6 W 987 60
99 SEP 01 0600 35.0 N 73.5 W 987 60
99 SEP 01 1200 35.4 N 73.5 W 989 50
99 SEP 01 1800 35.5 N 73.8 W 988 50
99 SEP 02 0000 35.3 N 73.6 W 988 50
99 SEP 02 0600 35.3 N 73.6 W 990 50
99 SEP 02 1200 35.3 N 73.6 W 990 50
99 SEP 02 1800 34.8 N 74.0 W 990 50
99 SEP 03 0000 34.1 N 74.1 W 990 50
99 SEP 03 0600 33.6 N 74.3 W 990 50
99 SEP 03 1200 33.1 N 74.0 W 990 50
99 SEP 03 1800 33.0 N 73.8 W 985 50
99 SEP 04 0000 33.1 N 74.1 W 985 50
99 SEP 04 0600 33.3 N 74.5 W 986 50
99 SEP 04 1200 33.8 N 75.3 W 986 55
99 SEP 04 1800 34.5 N 76.0 W 984 60
99 SEP 05 0000 35.0 N 76.8 W 985 45
99 SEP 05 0600 35.5 N 77.7 W 990 30
99 SEP 05 1200 36.1 N 78.8 W 995 30
99 SEP 05 1700 36.2 N 79.3 W 997 25 See Note
99 SEP 05 2300 36.4 N 79.6 W 1000 20
99 SEP 06 0515 36.5 N 79.9 W 1003 15
99 SEP 06 1035 36.8 N 79.8 W 1004 15
99 SEP 06 1700 37.6 N 79.6 W 1008 15
99 SEP 06 2300 40.4 N 78.8 W 1008 10 Becoming Extratropical
99 SEP 07 1700 43.3 N 77.8 W 1006 25 Extratropical
Note: Tracking information from 05/1700 UTC onward was taken from
bulletins issued by the Hydrometeorological Prediction Center in Camp
Springs, Maryland. This information was sent to me by John Wallace of
San Antonio, Texas. A special thanks to John for sending me the inland
track of Dennis. John indicated that the 06/0515 UTC and 06/2300 UTC
positions were estimates based upon continuity from his tracking maps.
*************************************************************************
Storm Name: EMILY Cyclone Number: 06 Basin: ATL
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 24 1800 11.8 N 54.0 W 1004 55
99 AUG 25 0000 12.3 N 53.9 W 1006 40
99 AUG 25 0600 12.7 N 54.3 W 1006 40
99 AUG 25 1200 12.9 N 54.8 W 1006 40
99 AUG 25 1800 13.3 N 55.5 W 1005 40
99 AUG 26 0000 13.8 N 55.7 W 1007 40
99 AUG 26 0600 14.2 N 56.2 W 1007 40
99 AUG 26 1200 15.0 N 56.6 W 1010 40
99 AUG 26 1800 16.1 N 57.0 W 1010 30
99 AUG 27 0000 16.9 N 57.1 W 1010 30
99 AUG 27 0600 18.2 N 57.0 W 1009 30
99 AUG 27 1200 19.1 N 56.9 W 1009 30
99 AUG 27 1800 20.0 N 57.0 W 1007 40
99 AUG 28 0000 21.1 N 56.6 W 1007 40
99 AUG 28 0600 22.7 N 56.8 W 1009 35
99 AUG 28 1200 23.8 N 56.7 W 1010 30 See Note
Note: The remnants of Tropical Storm Emily were absorbed into the
circulation of the large and intense Hurricane Cindy which was located
to the north and was near peak intensity at the time.
*************************************************************************
*************************************************************************
NORTHEAST PACIFIC (NEP) - North Pacific Ocean East of Longitude 180
NOTE: The tracking and intensity information for Northeast Pacific
Basin tropical cyclones is based upon operational advisories
from the Tropical Prediction Center/National Hurricane Center
in Miami, Florida, for systems east of Longitude 140W; and
from the Central Pacific Hurricane Center, Honolulu, Hawaii,
for systems west of Longitude 140W. The MSW are based on a
1-min averaging period, which is used by all U.S. civilian
and military weather services for tropical cyclone warnings.
*************************************************************************
Storm Name: DORA (9911) Cyclone Number: 07E Basin: NEP/NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 06 0000 12.2 N 100.7 W 1007 30
99 AUG 06 0600 12.4 N 102.2 W 1007 30
99 AUG 06 1200 12.9 N 103.5 W 1007 30
99 AUG 06 1800 13.2 N 105.0 W 1005 35
99 AUG 07 0000 13.6 N 106.5 W 999 45
99 AUG 07 0600 13.9 N 107.8 W 999 45
99 AUG 07 1200 14.4 N 108.5 W 997 45
99 AUG 07 1800 15.2 N 108.5 W 996 50
99 AUG 08 0000 15.1 N 110.0 W 991 60
99 AUG 08 0600 15.4 N 111.3 W 987 65
99 AUG 08 1200 15.5 N 112.5 W 987 65
99 AUG 08 1800 15.0 N 113.0 W 980 75
99 AUG 09 0000 15.0 N 114.1 W 970 90
99 AUG 09 0600 14.8 N 115.2 W 970 90
99 AUG 09 1200 14.6 N 115.9 W 970 90
99 AUG 09 1800 14.5 N 116.8 W 965 95
99 AUG 10 0000 14.5 N 117.5 W 960 100
99 AUG 10 0600 14.4 N 118.5 W 956 105
99 AUG 10 1200 14.3 N 119.4 W 952 110
99 AUG 10 1800 14.4 N 120.4 W 948 115
99 AUG 11 0000 14.5 N 121.5 W 948 115
99 AUG 11 0600 14.6 N 122.6 W 948 115
99 AUG 11 1200 14.6 N 123.8 W 948 115
99 AUG 11 1800 14.8 N 125.0 W 948 115
99 AUG 12 0000 14.9 N 126.4 W 943 120
99 AUG 12 0600 15.0 N 127.7 W 948 115
99 AUG 12 1200 15.2 N 129.1 W 948 115
99 AUG 12 1800 15.5 N 130.5 W 943 120
99 AUG 13 0000 15.5 N 132.3 W 943 120
99 AUG 13 0600 15.5 N 133.9 W 943 120
99 AUG 13 1200 15.5 N 135.7 W 948 115
99 AUG 13 1800 15.5 N 137.6 W 950 110
99 AUG 14 0000 15.6 N 139.7 W 960 100
99 AUG 14 0600 15.5 N 141.9 W 975 85
99 AUG 14 1200 15.5 N 143.3 W 985 70
99 AUG 14 1800 15.2 N 145.4 W 985 70
99 AUG 15 0000 15.2 N 147.2 W 985 70
99 AUG 15 0600 15.5 N 149.0 W 982 90
99 AUG 15 1200 15.5 N 150.8 W 978 95
99 AUG 15 1800 15.6 N 152.5 W 970 95
99 AUG 16 0000 15.8 N 154.3 W 965 95
99 AUG 16 0600 15.8 N 155.9 W 965 100
99 AUG 16 1200 15.7 N 157.7 W 972 90
99 AUG 16 1800 15.5 N 159.1 W 980 85
99 AUG 17 0000 15.5 N 160.8 W 990 80
99 AUG 17 0600 15.6 N 162.8 W 985 75
99 AUG 17 1200 15.5 N 164.1 W 987 75
99 AUG 17 1800 15.5 N 166.0 W 990 70
99 AUG 18 0000 15.6 N 167.8 W 992 65
99 AUG 18 0600 15.6 N 169.5 W 995 65
99 AUG 18 1200 15.7 N 171.4 W 995 65
99 AUG 18 1800 16.2 N 173.6 W 995 65
99 AUG 19 0000 16.5 N 175.3 W 995 65
99 AUG 19 0600 16.6 N 176.4 W 995 65
99 AUG 19 1200 17.2 N 177.7 W 995 65
99 AUG 19 1800 17.3 N 178.9 W 995 65
99 AUG 20 0000 18.0 N 179.2 E 996 60 45 See Note
99 AUG 20 0600 18.3 N 178.1 E 990 50 45
99 AUG 20 1200 19.1 N 177.6 E 990 45 45
99 AUG 20 1800 19.7 N 176.7 E 990 45 45
99 AUG 21 0000 20.6 N 175.4 E 990 45 45
99 AUG 21 0600 20.9 N 174.6 E 994 40 40
99 AUG 21 1200 21.3 N 173.4 E 996 40 40
99 AUG 21 1800 21.8 N 171.8 E 996 35 40
99 AUG 22 0000 22.4 N 170.7 E 998 30 35
99 AUG 22 0600 23.7 N 170.0 E 998 30 35 JMA: 23.6 N, 170.7 E
99 AUG 22 1200 24.6 N 168.9 E 998 25 35 JMA: 24.0 N, 170.1 E
99 AUG 22 1800 25.1 N 167.5 E 998 25 35 JMA: 24.2 N, 169.2 E
99 AUG 23 0000 25.3 N 167.7 E 998 25 35 JMA: 25.1 N, 169.0 E
99 AUG 23 0600 26.6 N 167.5 E 1010 25 30 JMA: 26.6 N, 169.1 E
99 AUG 23 1200 27.0 N 168.0 E 1016 25 JMA Information
Note: Central pressure and 10-min MSW estimates from 20/0000 UTC onward
provided by JMA, while coordinates and 1-min MSW were obtained from
JTWC warnings.
*************************************************************************
Storm Name: EUGENE Cyclone Number: 08E Basin: NEP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 06 1200 12.2 N 120.3 W 1007 30
99 AUG 06 1800 12.6 N 121.2 W 1005 35
99 AUG 07 0000 13.0 N 121.9 W 1005 35
99 AUG 07 0600 13.1 N 122.7 W 1003 35
99 AUG 07 1200 13.6 N 123.6 W 1003 35
99 AUG 07 1800 13.9 N 124.5 W 997 50
99 AUG 08 0000 14.3 N 125.4 W 994 55
99 AUG 08 0600 14.3 N 126.3 W 994 55
99 AUG 08 1200 14.6 N 127.4 W 994 55
99 AUG 08 1800 14.9 N 128.2 W 983 70
99 AUG 09 0000 14.9 N 129.4 W 979 75
99 AUG 09 0600 14.5 N 130.3 W 970 90
99 AUG 09 1200 14.3 N 131.4 W 970 95
99 AUG 09 1800 14.0 N 132.4 W 965 95
99 AUG 10 0000 14.1 N 133.6 W 965 95
99 AUG 10 0600 13.8 N 134.5 W 965 95
99 AUG 10 1200 13.7 N 135.8 W 970 85
99 AUG 10 1800 13.7 N 137.0 W 970 85
99 AUG 11 0000 13.7 N 138.1 W 973 85
99 AUG 11 0600 13.7 N 139.3 W 979 75
99 AUG 11 1200 13.8 N 140.6 W 979 75
99 AUG 11 1800 13.9 N 141.5 W 980 75
99 AUG 12 0000 14.0 N 142.5 W 985 75
99 AUG 12 0600 14.2 N 143.7 W 985 75
99 AUG 12 1200 14.5 N 144.9 W 985 75
99 AUG 12 1800 14.8 N 145.5 W 990 65
99 AUG 13 0000 14.7 N 146.8 W 998 55
99 AUG 13 0600 14.7 N 147.9 W 998 55
99 AUG 13 1200 14.7 N 149.3 W 999 55
99 AUG 13 1800 15.0 N 150.8 W 1003 50
99 AUG 14 0000 14.7 N 152.1 W 1002 45
99 AUG 14 0600 14.6 N 153.5 W 1004 45
99 AUG 14 1200 14.6 N 154.5 W 1004 35
99 AUG 14 1800 13.8 N 156.4 W 1004 35
99 AUG 15 0000 13.2 N 157.4 W 1006 30
99 AUG 15 0600 12.7 N 158.6 W 1006 30
99 AUG 15 1200 12.2 N 159.9 W 1006 30
99 AUG 15 1800 12.0 N 162.0 W 1006 30
*************************************************************************
Storm Name: Tropical Depression Cyclone Number: 09E Basin: NEP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 13 1800 14.3 N 117.1 W 1005 25
99 AUG 14 0000 14.7 N 118.0 W 1005 30
99 AUG 14 0600 14.9 N 119.0 W 1005 30
99 AUG 14 1200 14.8 N 118.9 W 1005 30
99 AUG 14 1800 15.0 N 119.5 W 1007 25
99 AUG 15 0000 15.5 N 120.0 W 1005 25
*************************************************************************
Storm Name: FERNANDA Cyclone Number: 10E Basin: NEP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 17 1200 12.6 N 113.7 W 1008 30
99 AUG 17 1800 13.4 N 115.3 W 1006 30
99 AUG 18 0000 14.0 N 116.4 W 1003 30
99 AUG 18 0600 15.0 N 118.0 W 1000 35
99 AUG 18 1200 15.4 N 118.6 W 1000 40
99 AUG 18 1800 15.6 N 119.5 W 1000 45
99 AUG 19 0000 16.0 N 120.5 W 1000 45
99 AUG 19 0600 16.7 N 121.2 W 1000 45
99 AUG 19 1200 17.1 N 122.0 W 994 55
99 AUG 19 1800 16.9 N 123.0 W 997 55
99 AUG 20 0000 16.7 N 123.4 W 1000 50
99 AUG 20 0600 16.5 N 124.1 W 1003 40
99 AUG 20 1200 16.5 N 124.7 W 1004 35
99 AUG 20 1800 16.1 N 125.6 W 1004 35
99 AUG 21 0000 15.8 N 126.4 W 1004 30
99 AUG 21 0600 15.7 N 127.4 W 1006 30
99 AUG 21 1200 15.5 N 128.0 W 1006 30
99 AUG 21 1800 14.9 N 128.6 W 1006 30
99 AUG 22 0000 14.7 N 129.4 W 1006 30
99 AUG 22 0600 14.5 N 130.2 W 1006 30
99 AUG 22 1200 14.3 N 130.5 W 1006 25
*************************************************************************
Storm Name: Tropical Depression Cyclone Number: 11E Basin: NEP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 23 1800 21.3 N 111.5 W 1000 30
99 AUG 24 0000 22.7 N 112.5 W 1000 30
99 AUG 24 0600 23.1 N 112.8 W 1000 30
99 AUG 24 1200 22.6 N 112.9 W 1003 25
99 AUG 24 1800 22.0 N 113.4 W 1003 25
*************************************************************************
*************************************************************************
NORTHWEST PACIFIC (NWP) - North Pacific Ocean West of Longitude 180
NOTE: The tracking information for Northwest Pacific Basin tropical
cyclones is based primarily upon operational warnings from the
Joint Typhoon Warning Center of the U.S. Air Force and Navy at
Pearl Harbor, Hawaii. Comparisons were made with track coordinates
given in advisories from the meteorological services of Japan
(JMA) and the Philippines (PAGASA). In general, whenever the
center position differed by more than 40-50 nm from JTWC's, an
entry was made in the Remarks column.
The 1-min avg MSW were taken from the JTWC advisories while the
10-min avg MSW were obtained from PAGASA's advisories if the
storm was in PAGASA's area of responsibility; otherwise, they
were gleaned from JMA's advisories or high seas forecasts. In
a few cases the 10-min MSW given by PAGASA and JMA did not agree;
in those cases I reported the higher value. The estimates of
central pressure were obtained from JMA's advisories.
Michael V. Padua, owner of the Typhoon '99 webpage sent me the
PAGASA and JMA tracks for these systems--a special thanks to
Michael for his assistance.
*************************************************************************
Storm Name: PAUL (9908) Cyclone Number: 12W Basin: NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 03 1200 20.9 N 137.3 E 1000 25 30 JMA: 20.0 N, 139.5 E
99 AUG 03 1800 21.3 N 136.8 E 1000 25 30 JMA: 20.7 N, 138.8 E
99 AUG 04 0000 21.5 N 137.4 E 998 30 30 JMA: 21.5 N, 136.6 E
99 AUG 04 0600 24.4 N 136.3 E 994 30 30
99 AUG 04 1200 25.4 N 135.3 E 992 30 35 JMA: 25.4 N, 136.1 E
99 AUG 04 1800 26.0 N 134.1 E 990 35 40
99 AUG 05 0000 26.8 N 133.1 E 990 45 40
99 AUG 05 0600 27.0 N 132.4 E 985 50 45
99 AUG 05 1200 27.0 N 132.2 E 985 45 JMA Warning
99 AUG 05 1800 27.1 N 132.7 E 985 35 45
99 AUG 06 0000 28.0 N 133.4 E 985 30 45 JMA: 27.9 N, 132.2 E
99 AUG 06 0600 29.5 N 133.5 E 985 25 45
99 AUG 06 1200 31.1 N 132.1 E 990 25 40 JMA: 30.6 N, 131.7 E
99 AUG 06 1800 31.2 N 130.4 E 990 25 40 JMA: 31.3 N, 129.6 E
99 AUG 07 0000 32.0 N 128.8 E 992 25 35 JMA: 32.6 N, 128.8 E
99 AUG 07 0600 33.0 N 127.1 E 994 25 30
99 AUG 07 1200 33.4 N 125.7 E 25
99 AUG 07 1800 34.4 N 124.2 E 25
99 AUG 08 0000 35.0 N 122.4 E 25
*************************************************************************
Storm Name: RACHEL (9909) Cyclone Number: 13W Basin: NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 05 1800 21.0 N 115.0 E 996 25 JMA Warning
99 AUG 06 0000 21.3 N 117.0 E 996 30 "
99 AUG 06 0600 21.9 N 117.9 E 996 30 30 JMA: 21.4 N, 116.3 E
99 AUG 06 1200 22.4 N 118.8 E 996 35 30 JMA: 21.9 N, 117.7 E
99 AUG 06 1800 22.5 N 119.3 E 996 35 30 JMA: 22.0 N, 118.1 E
99 AUG 07 0000 22.6 N 119.5 E 996 35 30
99 AUG 07 0600 23.5 N 119.7 E 996 35 30
99 AUG 07 1200 24.7 N 122.7 E 994 30 JMA Warning
99 AUG 07 1800 25.5 N 124.1 E 992 30 35 JMA: 25.0 N, 124.8 E
99 AUG 08 0000 26.4 N 126.3 E 992 30 35
99 AUG 08 0600 26.9 N 127.9 E 994 35 35
99 AUG 08 1200 27.5 N 128.5 E 996 35 30
99 AUG 08 1800 28.4 N 128.4 E 30
99 AUG 09 0000 29.2 N 127.8 E 25
99 AUG 09 0600 30.0 N 126.9 E 25
99 AUG 09 1200 30.8 N 126.1 E 25
99 AUG 09 1800 32.2 N 124.3 E 20
*************************************************************************
Storm Name: Tropical Depression Cyclone Number: 14W Basin: NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 08 1800 27.0 N 141.1 E 25
99 AUG 09 0000 28.8 N 140.3 E 25
99 AUG 09 0600 30.2 N 139.6 E 25
99 AUG 09 1200 31.5 N 139.2 E 30
99 AUG 09 1800 32.2 N 138.0 E 25
99 AUG 10 0000 32.9 N 137.3 E 25
99 AUG 10 0600 33.6 N 136.7 E 25
99 AUG 10 1200 34.7 N 136.3 E 20
*************************************************************************
Storm Name: Tropical Depression Cyclone Number: 15W Basin: NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 16 0600 30.9 N 127.9 E 25
99 AUG 16 1200 30.9 N 128.2 E 25
99 AUG 16 1800 31.5 N 128.8 E 25
99 AUG 17 0600 32.1 N 130.6 E 25
99 AUG 17 1200 32.9 N 130.8 E 25
99 AUG 17 1800 33.8 N 130.6 E 25
99 AUG 18 0000 34.4 N 130.9 E 25
99 AUG 18 0600 35.2 N 130.6 E 25
*************************************************************************
Storm Name: SAM/LUDING (9910) Cyclone Number: 16W Basin: NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 18 0000 13.4 N 129.7 E 30 PAGASA Warning
99 AUG 18 0600 12.5 N 128.6 E 30 30 PAGASA: 13.8 N, 129.0 E
99 AUG 18 1200 13.3 N 128.3 E 30 30
99 AUG 18 1800 14.5 N 127.7 E 30 35 PAGASA: 14.5 N, 127.0 E
99 AUG 19 0000 15.5 N 127.0 E 1002 35 45 PAGASA: 15.0 N, 126.0 E
99 AUG 19 0600 16.8 N 125.7 E 998 35 45 PAGASA: 16.2 N, 124.6 E
99 AUG 19 1200 17.0 N 124.7 E 998 40 45 PAGASA: 16.3 N, 123.4 E
99 AUG 19 1800 17.3 N 123.6 E 992 45 45 PAGASA: 17.0 N, 122.6 E
99 AUG 20 0000 17.9 N 122.5 E 990 50 50 PAGASA: 18.0 N, 121.7 E
99 AUG 20 0600 18.5 N 121.0 E 990 55 50
99 AUG 20 1200 18.4 N 120.2 E 985 55 50
99 AUG 20 1800 18.7 N 119.1 E 985 55 50
99 AUG 21 0000 19.0 N 118.7 E 980 60 55
99 AUG 21 0600 19.9 N 117.8 E 980 65 55
99 AUG 21 1200 20.3 N 116.8 E 980 60 55
99 AUG 21 1800 21.1 N 115.6 E 980 60 55 JMA: 20.5 N, 115.9 E
99 AUG 22 0000 21.8 N 115.0 E 980 65 55
99 AUG 22 0600 22.1 N 114.6 E 980 75 55
99 AUG 22 1200 22.7 N 113.8 E 985 65 50
99 AUG 22 1800 23.2 N 113.2 E 992 40 40
99 AUG 23 0000 23.4 N 112.7 E 998 35 30
99 AUG 23 0600 24.0 N 113.0 E 1004 25 JMA Warning
*************************************************************************
Storm Name: TANYA (9912) Cyclone Number: 17W Basin: NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 19 1800 30.1 N 178.0 E 30
99 AUG 20 0000 29.9 N 176.2 E 35
99 AUG 20 0600 30.2 N 175.0 E 45 35
99 AUG 20 1200 30.5 N 173.1 E 50 35
99 AUG 20 1800 31.0 N 171.7 E 55 35
99 AUG 21 0000 31.2 N 169.9 E 65 35
99 AUG 21 0600 31.5 N 168.2 E 65 35
99 AUG 21 1200 31.8 N 166.8 E 65 45
99 AUG 21 1800 32.1 N 165.2 E 65 50
99 AUG 22 0000 32.5 N 163.8 E 70 50
99 AUG 22 0600 33.1 N 162.3 E 70 50
99 AUG 22 1200 33.9 N 161.1 E 65 50
99 AUG 22 1800 34.6 N 159.6 E 60 45
99 AUG 23 0000 35.5 N 158.5 E 55 40
99 AUG 23 0600 36.5 N 157.8 E 50 30
99 AUG 23 1200 37.7 N 157.8 E 35 25
99 AUG 23 1800 38.9 N 158.3 E 30
99 AUG 24 0000 39.8 N 159.7 E 25
*************************************************************************
Storm Name: Tropical Depression Cyclone Number: 18W Basin: NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 21 1800 33.1 N 148.7 E 25
99 AUG 22 0000 33.8 N 148.1 E 25
99 AUG 22 0600 34.6 N 146.4 E 30
99 AUG 22 1200 34.8 N 145.5 E 25
99 AUG 22 1800 35.3 N 145.1 E 25
99 AUG 23 0000 35.3 N 145.7 E 25
99 AUG 23 0600 35.7 N 145.7 E 25
99 AUG 23 1200 36.5 N 146.0 E 25
99 AUG 23 1800 36.5 N 145.6 E 25
99 AUG 24 0000 36.7 N 146.2 E 25
*************************************************************************
Storm Name: VIRGIL (9913) Cyclone Number: 19W Basin: NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 24 0000 25.6 N 140.2 E 25
99 AUG 24 0600 25.4 N 140.5 E 25
99 AUG 24 1200 25.7 N 140.5 E 25
99 AUG 24 1800 25.4 N 140.9 E 30
99 AUG 25 0000 25.7 N 141.6 E 30
99 AUG 25 0600 26.3 N 142.8 E 65 30
99 AUG 25 1200 26.3 N 143.5 E 70 35
99 AUG 25 1800 26.6 N 144.2 E 75 35
99 AUG 26 0000 26.9 N 144.7 E 70 45
99 AUG 26 0600 27.7 N 145.5 E 65 45
99 AUG 26 1200 27.9 N 145.7 E 60 45
99 AUG 26 1800 28.1 N 145.7 E 50 45
99 AUG 27 0000 28.3 N 145.7 E 50 45
99 AUG 27 0600 28.6 N 146.0 E 45 40
99 AUG 27 1200 28.9 N 146.4 E 35 35
99 AUG 27 1800 29.2 N 146.6 E 30 35
99 AUG 28 0000 29.5 N 147.1 E 30 35
99 AUG 28 0600 29.6 N 148.4 E 30 30
99 AUG 28 1200 30.4 N 149.7 E 25
99 AUG 28 1800 30.6 N 150.7 E 25
99 AUG 29 0000 30.9 N 152.1 E 25
*************************************************************************
Storm Name: WENDY/MAMENG (9914) Cyclone Number: 20W Basin: NWP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 30 1800 12.0 N 130.0 E 30 PAGASA Warning
99 AUG 31 0000 12.1 N 128.7 E 30 "
99 AUG 31 0600 12.2 N 127.3 E 30 "
99 AUG 31 1200 12.4 N 127.0 E 30 "
99 AUG 31 1800 12.4 N 127.0 E 30 "
99 SEP 01 0000 12.7 N 126.9 E 25 30 PAGASA: 13.5 N, 127.0 E
99 SEP 01 0600 12.9 N 126.7 E 25 30 PAGASA: 14.2 N, 126.3 E
99 SEP 01 1200 13.1 N 126.4 E 25 30 PAGASA: 15.5 N, 125.5 E
99 SEP 01 1800 13.8 N 125.9 E 1006 25 35 PAGASA: 16.0 N, 124.8 E
99 SEP 02 0000 17.0 N 124.2 E 1004 25 40 PAGASA: 16.7 N, 123.6 E
99 SEP 02 0600 18.1 N 122.6 E 1002 25 40 PAGASA: 17.3 N, 122.7 E
99 SEP 02 1200 19.1 N 122.0 E 1000 30 40
99 SEP 02 1800 19.8 N 120.4 E 1000 35 40
99 SEP 03 0000 20.4 N 119.0 E 1000 40 45
99 SEP 03 0600 21.9 N 118.1 E 996 40 35 See Note
99 SEP 03 1200 22.2 N 117.7 E 996 40 35
99 SEP 03 1800 22.8 N 116.6 E 998 40 30
99 SEP 04 0000 23.4 N 115.5 E 30
Note: The apparent drop in the 10-min avg MSW at 03/0600 UTC is due to
the fact that the previous values were taken from the PAGASA track, but
the remaining estimates were obtained from JMA's track.
*************************************************************************
*************************************************************************
ADDITIONAL and ALTERNATE TRACKS
for NORTHWEST PACIFIC BASIN
TROPICAL CYCLONES
This is a "first" in the series of Global Tropical Cyclone Tracks files
which have been prepared by the author since October, 1997. Heretofore,
I have always included just one track file for each cyclone, using
the Remarks column to indicate significant differences in positions
between JTWC and other warning agencies. During August, in the
Northwest Pacific basin, the monsoon trough intruded to rather high
latitudes, leading to a rather spectacular outbreak of small-scale
convective cyclones. There was wide disagreement among satellite
intensity estimates and the manner in which these systems were treated
by JTWC and JMA.
The tracks below were supplied by Dr. Mark Lander, a professor at the
Water and Environmental Institute of the Pacific at the University of
Guam. From 1988 to 1998, Dr. Lander (who earned his Doctorate from
the University of Hawaii in 1986) was funded by the Office of Naval
Research to conduct research on tropical cyclones. During much of
this time Mark worked at JTWC alongside the forecasters and satellite
analysts, helping them to decide what basic research could best help
them solve some of the problems encountered in their day-to-day work.
Three systems are included for which neither JTWC nor JMA issued any
warnings. Following are alternate tracks prepared by Mark for Typhoons
Tanya and Virgil and Tropical Depression 18W. In general Mark's
intensities represent the most liberal estimates while JMA's are the
most conversative and JTWC's more or less in the middle. It appears
that part of the problem is that the widely-used Dvorak method of
satellite analysis for tropical cyclones does not handle such midget
systems well. A case in point--in late August in the Atlantic a
midget tropical cyclone formed in the deep tropics--Tropical Storm
Emily. The satellite signature on 24 Aug didn't look anything like
a tropical storm, yet a reconnaissance flight found a tightly-wound
midget tropical storm only 10 kts shy of hurricane force!
It is the author's hope that by including these systems some qualified
persons will conduct further studies of these small cyclones and other
similar systems. In order to provide a distinctive identification for
these storms since they were not assigned any name or number by any
TCWC, I have chosen to designate them with letters of the Greek
alphabet. The regular summary will have some more information on
this.
*************************************************************************
Storm Name: "ALPHA" Cyclone Number: None Basin: NWP/NEP
(Special "best track" and intensity estimates provided by Mark Lander.)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 08 0000 30.8 N 161.5 E 30
99 AUG 08 0600 31.5 N 162.0 E 35
99 AUG 08 1200 31.2 N 164.0 E 35
99 AUG 08 1800 30.7 N 165.5 E 30
99 AUG 09 0000 30.5 N 166.5 E 30
99 AUG 09 0600 30.3 N 168.0 E 25
99 AUG 09 1200 30.3 N 169.5 E 25
99 AUG 09 1800 30.5 N 171.0 E 25
99 AUG 10 0000 31.5 N 172.2 E 25
99 AUG 10 0600 32.5 N 174.0 E 25
99 AUG 10 1200 34.5 N 176.2 E 40
99 AUG 10 1800 35.7 N 178.5 E 45
99 AUG 11 0000 38.4 N 179.7 W 55
99 AUG 11 0600 41.7 N 177.5 W 45
99 AUG 11 1200 44.5 N 174.5 W 40
99 AUG 11 1800 47.0 N 172.7 W 30
*************************************************************************
Storm Name: "BETA" Cyclone Number: None Basin: NWP
(Special "best track" and intensity estimates provided by Mark Lander.)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 09 0000 32.0 N 156.5 E 20
99 AUG 09 0600 31.6 N 157.8 E 25
99 AUG 09 1200 30.7 N 158.7 E 25
99 AUG 09 1800 29.5 N 159.3 E 30
99 AUG 10 0000 28.2 N 160.1 E 35
99 AUG 10 0600 27.1 N 161.1 E 40
99 AUG 10 1200 26.3 N 162.0 E 45
99 AUG 10 1800 25.8 N 163.0 E 40
99 AUG 11 0000 25.8 N 163.9 E 30
99 AUG 11 0600 26.5 N 165.3 E 25
*************************************************************************
Storm Name: "GAMMA" Cyclone Number: None Basin: NWP
(Special "best track" and intensity estimates provided by Mark Lander.)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 11 0600 28.0 N 131.0 E 20
99 AUG 11 1200 29.2 N 131.5 E 20
99 AUG 11 1800 30.2 N 132.2 E 20
99 AUG 12 0000 30.8 N 132.8 E 20
99 AUG 12 0600 31.4 N 133.8 E 20
99 AUG 12 1200 31.7 N 135.0 E 20
99 AUG 12 1800 31.9 N 136.2 E 20
99 AUG 13 0000 32.3 N 137.6 E 20
99 AUG 13 0600 32.7 N 138.8 E 20
99 AUG 13 1200 33.2 N 139.5 E 25
99 AUG 13 1800 33.8 N 139.8 E 30
99 AUG 14 0000 34.4 N 140.0 E 35
99 AUG 14 0600 35.3 N 139.5 E 35
99 AUG 14 1200 36.2 N 139.1 E 30
99 AUG 14 1800 36.7 N 138.3 E 25
99 AUG 15 0000 37.2 N 137.3 E 25
99 AUG 15 0600 37.0 N 136.3 E 25
99 AUG 15 1200 36.8 N 136.0 E 25
99 AUG 15 1800 37.4 N 136.0 E 25
99 AUG 16 0000 38.0 N 135.7 E 25
99 AUG 16 0600 38.3 N 134.6 E 25
99 AUG 16 1200 38.8 N 136.2 E 25
99 AUG 16 1800 39.4 N 137.0 E 20
99 AUG 17 0000 40.5 N 137.5 E 20
*************************************************************************
Storm Name: TANYA (9912) Cyclone Number: 19W Basin: NEP/NWP
(Special "best track" and intensity estimates provided by Mark Lander.)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 18 0600 31.7 N 177.0 W 25
99 AUG 18 1200 31.0 N 177.8 W 30
99 AUG 18 1800 30.2 N 178.8 W 40
99 AUG 19 0000 29.6 N 179.5 W 45
99 AUG 19 0600 29.4 N 179.4 E 45
99 AUG 19 1200 29.4 N 178.6 E 45
99 AUG 19 1800 29.5 N 177.9 E 60
99 AUG 20 0000 29.8 N 176.3 E 65
99 AUG 20 0600 30.2 N 174.6 E 65
99 AUG 20 1200 30.9 N 173.0 E 65
99 AUG 20 1800 31.0 N 171.3 E 75
99 AUG 21 0000 31.1 N 169.6 E 90
99 AUG 21 0600 31.3 N 167.9 E 90
99 AUG 21 1200 31.7 N 166.7 E 90
99 AUG 21 1800 32.0 N 165.2 E 85
99 AUG 22 0000 32.2 N 163.5 E 80
99 AUG 22 0600 32.9 N 162.1 E 70
99 AUG 22 1200 33.4 N 160.8 E 65
99 AUG 22 1800 34.2 N 159.7 E 50
99 AUG 23 0000 35.2 N 158.6 E 45
99 AUG 23 0600 36.5 N 157.6 E 45
99 AUG 23 1200 37.6 N 157.4 E 45
99 AUG 23 1800 38.8 N 158.2 E 45
99 AUG 24 0000 39.5 N 159.4 E 40
99 AUG 24 0600 40.5 N 161.3 E 40
99 AUG 24 1200 41.5 N 164.2 E 40
99 AUG 24 1800 42.3 N 168.3 E 35
99 AUG 25 0000 43.0 N 172.5 E 35
*************************************************************************
Storm Name: Tropical Cyclone Cyclone Number: 18W Basin: NWP
(Special "best track" and intensity estimates provided by Mark Lander.)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 19 0000 26.0 N 155.0 E 20
99 AUG 19 0600 27.0 N 154.5 E 20
99 AUG 19 1200 27.8 N 154.0 E 25
99 AUG 19 1800 28.7 N 153.5 E 25
99 AUG 20 0000 29.5 N 152.8 E 30
99 AUG 20 0600 30.2 N 152.2 E 30
99 AUG 20 1200 30.9 N 151.7 E 30
99 AUG 20 1800 31.6 N 151.3 E 35
99 AUG 21 0000 32.2 N 150.8 E 35
99 AUG 21 0600 32.6 N 150.2 E 45
99 AUG 21 1200 32.9 N 149.4 E 45
99 AUG 21 1800 33.2 N 148.6 E 45
99 AUG 22 0000 33.5 N 147.7 E 45
99 AUG 22 0600 33.6 N 146.8 E 40
99 AUG 22 1200 33.9 N 146.3 E 40
99 AUG 22 1800 34.3 N 145.8 E 35
99 AUG 23 0000 34.8 N 145.6 E 30
99 AUG 23 0600 35.4 N 145.3 E 30
99 AUG 23 1200 36.3 N 145.2 E 30
99 AUG 23 1800 37.2 N 145.4 E 30
99 AUG 24 0000 37.7 N 145.7 E 30
99 AUG 24 0600 38.3 N 146.5 E 30
99 AUG 24 1200 39.0 N 147.5 E 30
99 AUG 24 1800 39.8 N 149.0 E 30
99 AUG 25 0000 41.2 N 150.8 E 25
*************************************************************************
Storm Name: VIRGIL (9913) Cyclone Number: 19W Basin: NWP
(Special "best track" and intensity estimates provided by Mark Lander.)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 22 0600 28.0 N 139.0 E 15
99 AUG 22 1200 27.8 N 139.5 E 20
99 AUG 22 1800 27.5 N 139.7 E 25
99 AUG 23 0000 27.2 N 139.9 E 30
99 AUG 23 0600 26.7 N 140.0 E 35
99 AUG 23 1200 26.2 N 140.1 E 35
99 AUG 23 1800 25.6 N 140.2 E 35
99 AUG 24 0000 25.1 N 140.3 E 35
99 AUG 24 0600 25.0 N 140.6 E 35
99 AUG 24 1200 25.2 N 141.2 E 35
99 AUG 24 1800 25.4 N 141.7 E 40
99 AUG 25 0000 25.7 N 142.2 E 45
99 AUG 25 0600 26.1 N 142.6 E 70
99 AUG 25 1200 26.3 N 143.3 E 100
99 AUG 25 1800 26.6 N 144.0 E 100
99 AUG 26 0000 26.8 N 144.8 E 65
99 AUG 26 0600 27.3 N 145.2 E 50
99 AUG 26 1200 27.5 N 145.3 E 50
99 AUG 26 1800 27.8 N 145.4 E 45
99 AUG 27 0000 28.1 N 145.6 E 45
99 AUG 27 0600 28.4 N 145.8 E 45
99 AUG 27 1200 28.7 N 146.1 E 45
99 AUG 27 1800 29.0 N 146.6 E 45
99 AUG 28 0000 29.4 N 147.2 E 40
99 AUG 28 0600 29.7 N 148.0 E 40
99 AUG 28 1200 30.2 N 149.5 E 40
99 AUG 28 1800 30.7 N 151.2 E 35
99 AUG 29 0000 30.9 N 152.7 E 35
99 AUG 29 0600 30.8 N 154.4 E 35
99 AUG 29 1200 30.7 N 155.5 E 35
99 AUG 29 1800 30.5 N 157.8 E 30
99 AUG 30 0000 30.4 N 159.0 E 30
99 AUG 30 0600 30.4 N 160.2 E 30
99 AUG 30 1200 30.5 N 161.7 E 30
99 AUG 30 1800 30.8 N 163.3 E 25
99 AUG 31 0000 31.2 N 165.0 E 25
99 AUG 31 0600 31.5 N 166.5 E 25
99 AUG 31 1200 31.5 N 167.5 E 30
99 AUG 31 1800 31.4 N 168.2 E 30
99 SEP 01 0000 31.0 N 169.0 E 25
99 SEP 01 0600 30.9 N 169.0 E 25
99 SEP 01 1200 30.8 N 169.0 E 25
99 SEP 01 1800 30.8 N 168.9 E 20
99 SEP 02 0000 30.8 N 168.9 E 20
99 SEP 02 0600 30.8 N 168.9 E 20
99 SEP 02 1200 31.0 N 168.7 E 20
99 SEP 02 1800 31.4 N 168.6 E 20
99 SEP 03 0000 32.2 N 168.4 E 15
99 SEP 03 0600 33.2 N 168.5 E 15
*************************************************************************
*************************************************************************
NORTH INDIAN OCEAN (NIO) - Bay of Bengal and Arabian Sea
NOTE: The tracking and intensity information for North Indian Ocean
Basin tropical cyclones is based primarily upon operational
warnings from the Joint Typhoon Warning Center of the U.S.
Air Force and Navy (JTWC) at Pearl Harbor, Hawaii. For weaker
systems not in warning status by JTWC, information gleaned from
the twice-daily issuances of the Indian Meteorological Depart-
ment (IMD) was used to complete the tracks. These bulletins
usually give analyzed center positions at either 0300 or 0600
UTC and 1200 or 1500 UTC.
The MSW are based on a 1-min averaging period, which is used by
all U.S. civilian and military weather services for tropical
cyclone warnings. For synoptic observations in the North Indian
region, both 10-min and 3-min average winds are employed, but
IMD makes no attempt to modify the Dvorak scale for estimating
tropical cyclone intensity; hence, a 1-min avg MSW is implied.
In the North Indian basin JTWC usually does not initiate warnings
until a system is well-organized and it is likely to attain
tropical storm status within 48 hours.
Windspeeds are usually not reported in the IMD bulletins. Systems
are usually classified as depressions, deep depressions, or
cyclonic storms. For depressions I assigned a MSW of 25 kts and
for deep depressions 30 kts. If the early stages of a system
were referred to as a low-pressure area, I assigned 20 kts.
*************************************************************************
Storm Name: Tropical Depression Cyclone Number: None Basin: NIO
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
99 AUG 06 1200 21.0 N 88.5 W 25
99 AUG 06 2100 21.0 N 88.5 W 25
99 AUG 07 1200 22.8 N 86.2 W 20 Inland
99 AUG 08 1200 22.5 N 83.0 W 15 "
Note: The MSW estimates are my own, based upon the fact that IMD never
called this system a "deep depression", which would imply 30-kt winds.
The final two values are based upon the fact that the system was inland
and weakening.
*************************************************************************
*************************************************************************
*************************************************************************
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Document: trak9908.htm
Updated: 4th January 2007 |
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