[Index]
Monthly Global Tropical Cyclone Tracks April 2001
[Summaries and Track Data] [Prepared by Gary Padgett]
| Tropical
Cyclones
[Index] |
Monthly Global Tropical Cyclone Tracks April 2001 [Summaries and Track Data] [Prepared by Gary Padgett] |
GLOBAL TROPICAL CYCLONE TRACKS - APRIL 2001
!!!! IMPORTANT -- PLEASE SEE NOTE AT END OF FILE !!!!
*************************************************************************
ATLANTIC (ATL) - North Atlantic Ocean, Caribbean Sea, Gulf of Mexico
NOTE: The following track was supplied by David Roth, a meteorologist
employed at the Hydrometeorological Prediction Center. Just a
few days ago, the author received a visible satellite image of
a well-developed occuded cyclone in the Atlantic on 8 April, sent
by John Wallace of San Antonio, Texas. I have forwarded this
image to David Roth and asked for his opinion on whether it could
be considered a hybrid or subtropical cyclone. If David feels
that it does qualify and provides a track, I will include it with
the cyclone tracks file for May.
Systems Tracked
---------------
Hybrid/Possible Subtropical LOW 25 - 28 Apr
*************************************************************************
Storm Name: None Cyclone Number: None Basin: ATL
(Hybrid or possible subtropical system--track by David Roth)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
01 APR 25 0000 33.0 N 38.0 W 1014 15
01 APR 25 0600 33.0 N 40.0 W 1009 20
01 APR 25 1200 32.0 N 40.0 W 1011 20
01 APR 25 1800 31.0 N 39.0 W 1011 20
01 APR 26 0000 30.9 N 38.1 W 1012 15
01 APR 26 0600 30.8 N 37.4 W 1012 25
01 APR 26 1200 30.4 N 36.8 W 1013 25
01 APR 26 1800 29.9 N 36.4 W 1014 35
01 APR 27 0000 29.0 N 37.0 W 1014 25
01 APR 27 0600 29.1 N 38.2 W 1015 25
01 APR 27 1200 30.0 N 39.0 W 1016 20
01 APR 27 1800 30.0 N 40.0 W 1017 25
01 APR 28 0000 29.1 N 40.8 W 1018 15
01 APR 28 0600 28.4 N 41.9 W 1019 15
01 APR 28 1200 27.8 N 43.1 W 1020 10
01 APR 28 1800 27.3 N 44.6 W 1020 10
Note: System formed along a dying stationary front, then drifted
aimlessly to the southeast until late on the 26th, when the surface
steering around the surface ridge finally moved it southwestward.
The tracking information is based on MPC maps with emphasis on ship
observations. The only ship to report 35-kt winds (at 26/1800 UTC)
was situated in the tightest gradient between the LOW and an adjacent
HIGH. Many 25-kt ship reports were received on the 26th and 27th.
*************************************************************************
*************************************************************************
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. Apparently
JMA did not issue any bulletins on the following system; hence,
there are no central pressure estimates.
Michael V. Padua, owner of the Typhoon 2001 webpage, sent me the
PAGASA track for this system--a special thanks to Michael for his
assistance.
Systems Tracked
---------------
Tropical Depression (02W / BAROK) 18 - 19 Apr
*************************************************************************
Storm Name: None Cyclone Number: 02W Basin: NWP
PAGASA Internal Name: BAROK JMA Tropical Storm Number: None
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
01 APR 18 0600 7.5 N 132.0 E 25 PAGASA Warning
01 APR 18 1200 8.7 N 129.5 E 25 25 PAGASA: 9.0 N, 130.5 E
01 APR 18 1800 8.8 N 131.7 E 25 25 Relocated
01 APR 19 0000 9.6 N 131.0 E 20 25 PAGASA: 9.2 N, 130.0 E
01 APR 19 0600 10.0 N 130.0 E 25 PAGASA Warning
*************************************************************************
*************************************************************************
NORTH INDIAN OCEAN (NIO) - Bay of Bengal and Arabian Sea
NOTE: The tracking and intensity information for the following system
was supplied by Roger Edson of the University of Guam, formerly
a forecaster with JTWC. No warnings were issued on this system
by either JTWC or IMD, although JTWC mentioned the disturbance
for several days in their Tropical Weather Outlooks and issued
a Tropical Cyclone Formation Alert for the system. The cyclone
actually started in the Gulf of Thailand (NWP basin) and tracked
across the Malay Peninsula into the Andaman Sea. Since it spent
the majority of its life and reached its peak intensity in the
eastern Bay of Bengal, I am including it here as a North Indian
Ocean system.
Systems Tracked
---------------
Tropical Cyclone "PI" 28 Apr - 03 May
*************************************************************************
Storm Name: "PI" Cyclone Number: None Basin: NWP/NIO
(Track provided by Roger Edson)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
01 APR 28 1200 4.0 N 105.0 E 15
01 APR 29 0000 6.5 N 104.0 E 20
01 APR 29 1200 8.5 N 102.5 E 30
01 APR 30 0000 11.0 N 100.0 E 35
01 APR 30 1200 11.5 N 99.0 E 1006 25 Overland
01 MAY 01 0000 11.5 N 97.0 E 1005 30
01 MAY 01 1200 12.2 N 96.0 E 1004 35
01 MAY 02 0000 12.8 N 95.5 E 40
01 MAY 02 1200 14.0 N 96.0 E 1003 40 JTWC issued TCFA
01 MAY 02 1800 14.5 N 96.5 E 1003 30
01 MAY 03 0000 15.2 N 97.2 E 1003 25
01 MAY 03 0600 16.0 N 98.0 E 20 Overland
Note: The central pressure estimates were taken from STWOs and the
Tropical Cyclone Formation Alert (TCFA) issued by JTWC.
*************************************************************************
*************************************************************************
SOUTHWEST INDIAN OCEAN (SWI) - South Indian Ocean West of Longitude 90E
NOTE: The tracking coordinates, 10-min avg MSW, and estimates of
central pressure were obtained from the RSMC La Reunion's
(MFR) advisories, while the 1-min avg MSW values were taken
from JTWC's warnings. A very special thanks to Patrick Hoareau
of Rennes, France, for sending me the tracks for these systems
already typed in the correct format with only minimal editing
needed by myself.
Systems Tracked
---------------
Tropical Storm EVARISTE (MFR 09 / 18S) 01 - 08 Apr
Tropical Depression (MFR 10 / 16S) 02 - 05 Apr
*************************************************************************
Storm Name: EVARISTE Cyclone Number: 18S Basin: SWI
MFR Tropical Disturbance Number: 09
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
01 APR 01 0130 9.0 S 65.0 E 1008 20 Based on QuikScat pass
01 APR 02 1200 9.2 S 61.9 E 1002 25
01 APR 03 0000 9.8 S 61.6 E 1002 30 25 See Note
01 APR 03 0600 10.2 S 61.9 E 1002 25
01 APR 03 1200 10.4 S 62.2 E 1002 25
01 APR 03 1800 10.3 S 62.2 E 1000 30 25
01 APR 04 0000 10.4 S 62.2 E 997 30
01 APR 04 0600 12.0 S 63.7 E 998 35 30
01 APR 04 1200 12.8 S 63.4 E 998 30
01 APR 04 1800 13.7 S 62.8 E 997 45 30 JTWC: 12.9 S, 62.4 E
01 APR 05 0000 13.2 S 62.5 E 991 40
01 APR 05 0600 13.6 S 61.4 E 991 60 40
01 APR 05 1200 14.4 S 61.4 E 980 55
01 APR 05 1800 15.0 S 61.2 E 977 75 60
01 APR 06 0000 15.7 S 61.0 E 977 60
01 APR 06 0600 16.3 S 61.0 E 976 75 60
01 APR 06 1200 16.8 S 60.8 E 978 55
01 APR 06 1800 17.8 S 60.9 E 980 65 50 JTWC: 17.3 N, 60.7 E
01 APR 07 0000 18.6 S 61.0 E 980 50
01 APR 07 0600 20.4 S 62.0 E 984 55 50 JTWC: 21.2 S, 62.4 E
01 APR 07 1200 23.2 S 62.0 E 988 45 45
01 APR 07 1800 23.2 S 61.0 E 992 40 40 JTWC: 23.1 S, 60.4 E
01 APR 08 0000 23.3 S 60.7 E 998 40 30
01 APR 08 0600 24.3 S 61.8 E 35 JTWC Warning
Note: Winds locally reaching 30 kts.
*************************************************************************
Storm Name: None Cyclone Number: 16S Basin: SWI
MFR Tropical Disturbance Number: 10
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
01 APR 02 1800 13.3 S 86.6 E 35 JTWC Wrng - See Note #1
01 APR 03 0600 14.5 S 84.2 E 1002 35 25 JTWC: 13.7 S, 84.2 E
01 APR 03 1200 15.0 S 83.1 E 997 30 See Note #2
01 APR 03 1800 15.5 S 81.9 E 997 35 30 "
01 APR 04 0000 16.0 S 81.2 E 998 30
01 APR 04 0600 15.4 S 79.6 E 998 35 30
01 APR 04 1200 15.0 S 78.5 E 999 25 See Note #3
01 APR 04 1800 15.1 S 77.6 E 999 35 25 "
01 APR 05 0000 14.1 S 76.7 E 1000 25 "
01 APR 05 0600 13.0 S 77.0 E 35 JTWC Warning
01 APR 05 1800 11.3 S 77.9 E 25 "
Note #1: At 02/1800 UTC Perth issued a satellite classification bulletin
for the benefit of WMO Region 1 countries, assigning a Dvorak rating of
T4.0 to this system with peak 10-min mean winds estimated at 55 kts. The
first JTWC warning noted that the tropical cyclone was extremely compact
and that the Dvorak classification could possibly be unrepresentative of
the true strength of the system.
Note #2: Winds locally reaching 35 kts in southern semicircle.
Note #3: Winds locally reaching 30 kts in southern semicircle.
*************************************************************************
*************************************************************************
NORTHWEST AUSTRALIA/SOUTHEAST INDIAN OCEAN (AUW) - Longitude 90E to 135E
NOTE: The tracking information presented below was obtained from
operational warnings issued by the Tropical Cyclone Warning
Centres at Perth, Western Australia, and Darwin, Northern
Territory. Also, the central pressure estimates and 10-min avg
MSW values were obtained from Perth's and Darwin's warnings while
the 1-min avg MSW was taken from JTWC warnings. A special thanks
to Patrick Hoareau for sending me the tracks for these systems
already typed in the correct format.
Systems Tracked
---------------
Severe Tropical Cyclone WALTER (17S) 01 - 08 Apr
Tropical Cyclone ALISTAIR (20S) 16 - 22 Apr
*************************************************************************
Storm Name: WALTER Cyclone Number: 17S Basin: AUW
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
01 APR 01 0400 10.8 S 110.8 E 1007 25
01 APR 01 1000 10.7 S 110.1 E 1007 25
01 APR 01 2200 10.5 S 110.5 E 1007 25
01 APR 02 0400 10.0 S 108.0 E 995 45
01 APR 02 1000 09.9 S 106.8 E 995 45
01 APR 02 1600 09.6 S 106.1 E 995 25 45
01 APR 02 2200 09.8 S 105.2 E 990 35 45 JTWC-00Z: 10.1S, 103.9E
01 APR 03 0400 09.7 S 103.8 E 985 50
01 APR 03 1000 09.9 S 102.5 E 985 55 50
01 APR 03 1600 10.0 S 101.8 E 980 55
01 APR 03 2200 10.1 S 101.0 E 960 65
01 APR 04 0100 10.1 S 100.6 E 960 65 65
01 APR 04 0400 10.3 S 100.0 E 960 65
01 APR 04 1000 10.5 S 98.7 E 960 75 65
01 APR 04 1600 10.7 S 98.2 E 950 80
01 APR 04 2200 11.3 S 97.0 E 955 90 80
01 APR 05 0400 11.7 S 96.6 E 975 60
01 APR 05 1000 12.1 S 96.1 E 975 80 60
01 APR 05 1600 12.6 S 95.6 E 975 60
01 APR 05 2200 12.8 S 95.4 E 970 70 65
01 APR 06 0400 13.2 S 95.2 E 970 65
01 APR 06 1000 13.7 S 94.8 E 970 65 65
01 APR 06 1600 14.2 S 94.2 E 970 65
01 APR 06 2200 15.0 S 94.0 E 970 65 65 JTWC-00Z: 15.1S, 95.0E
01 APR 07 0400 16.4 S 95.0 E 970 65
01 APR 07 1000 16.5 S 95.7 E 980 50 55 JTWC-12Z: 17.9S, 95.2E
01 APR 07 1600 18.3 S 95.4 E 980 55
01 APR 07 2200 19.8 S 96.8 E 985 45 45 JTWC-00Z: 19.3S, 95.3E
01 APR 08 0400 20.6 S 94.7 E 995 40
01 APR 08 1000 21.0 S 94.8 E 998 30 30 JTWC-12Z: 22.7S, 94.7E
*************************************************************************
Storm Name: ALISTAIR Cyclone Number: 20S Basin: AUW
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
01 APR 16 0000 08.3 S 135.7 E 1004 25 JTWC Formation Alert
01 APR 16 0600 08.0 S 134.5 E 1002 30 30 JTWC: 7.0 S, 134.3 E
01 APR 16 1200 10.0 S 134.0 E 1000 30
01 APR 16 1800 10.2 S 132.8 E 990 35 40 JTWC: 9.3 S, 132.9 E
01 APR 17 0000 10.4 S 131.4 E 990 40
01 APR 17 0600 10.8 S 130.5 E 990 35 40
01 APR 17 1200 11.6 S 129.5 E 990 40
01 APR 17 1800 11.8 S 128.6 E 990 40 40
01 APR 18 0000 12.7 S 127.0 E 985 45 50
01 APR 18 0600 13.8 S 125.3 E 985 55 50 JTWC: 13.5 S, 125.7 E
01 APR 18 1000 14.3 S 124.5 E 980 60 55 Entered Perth AOR
01 APR 18 1600 14.9 S 123.3 E 975 60 60
01 APR 18 2200 15.5 S 122.4 E 975 65 60
01 APR 19 0400 16.4 S 121.1 E 975 65 60
01 APR 19 1000 17.2 S 120.0 E 975 60 60
01 APR 19 1600 17.8 S 118.9 E 980 55 55
01 APR 19 2200 17.8 S 116.5 E 985 50 50
01 APR 20 0400 18.1 S 115.3 E 990 45 50
01 APR 20 1000 18.6 S 113.9 E 990 45 50
01 APR 20 1600 19.0 S 112.7 E 990 40 50
01 APR 20 2200 19.9 S 112.0 E 990 40 50
01 APR 21 0400 20.4 S 111.1 E 990 35 45
01 APR 21 1000 20.9 S 111.4 E 990 35 45 JTWC-12Z: 21.1S, 110.0E
01 APR 21 1600 21.1 S 109.8 E 995 40
01 APR 21 2200 21.6 S 109.3 E 1000 35
01 APR 22 1800 23.5 S 109.5 E 1005 25 JTWC Trop WX Outlook
*************************************************************************
*************************************************************************
NORTHEAST AUSTRALIA/CORAL SEA (AUE) - Longitude 135E to 160E
NOTE: The tracking information presented below was obtained from
operational warnings issued by the Tropical Cyclone Warning
Centre at Darwin, Northern Territory. Also, the central pressure
estimates and 10-min avg MSW values were obtained from Darwin's
warnings.
Systems Tracked
---------------
Tropical LOW 04 - 05 Apr
*************************************************************************
Storm Name: None Cyclone Number: None Basin: AUE
(Tropical LOW in the western Gulf of Carpentaria)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
01 APR 04 0130 11.0 S 137.0 E 1004 30 Darwin Advices
01 APR 04 0730 11.5 S 136.5 E 1004 30
01 APR 04 1330 11.5 S 136.3 E 1005 30
01 APR 04 1930 11.7 S 135.8 E 1005 30
01 APR 05 0130 11.8 S 135.4 E 1005 30
01 APR 05 0530 12.2 S 134.8 E 1006 25 Moving Inland
*************************************************************************
*************************************************************************
SOUTH PACIFIC (SPA) - South Pacific Ocean East of Longitude 160E
NOTE: The tracking and intensity information for South Pacific
Basin tropical cyclones was taken from real-time operational
warnings issued by the Nadi TCWC, Fiji for positions north of
25S and from the Wellington, New Zealand office for positions
south of 25S. Warnings from JTWC were utilized for the purpose
of making comparisons and for supplying information for times
when the Nadi or Wellington warnings were unavailable. The
10-min avg MSW values were taken from the Fiji or New Zealand
warnings while the 1-min avg MSW values were obtained from the
JTWC warnings.
Systems Tracked
---------------
Tropical Cyclone SOSE (13F / 19P) 04 - 11 Apr
*************************************************************************
Storm Name: SOSE Cyclone Number: 19P Basin: SPA
Fiji Tropical Disturbance Number: 13F
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
01 APR 04 2100 13.5 S 170.0 E 1000 25
01 APR 05 0000 14.5 S 167.5 E 1000 25
01 APR 05 0600 14.5 S 166.5 E 999 25
01 APR 05 1200 14.2 S 165.5 E 999 25
01 APR 05 1800 14.0 S 165.8 E 995 35 35
01 APR 06 0000 14.0 S 165.2 E 992 40
01 APR 06 0600 14.0 S 165.2 E 987 40 45
01 APR 06 1200 14.2 S 165.0 E 987 45
01 APR 06 1800 14.4 S 165.5 E 985 50 50 Relocated
01 APR 07 0000 14.6 S 165.7 E 985 50
01 APR 07 0600 15.6 S 166.3 E 980 65 55 JTWC: 15.7 S, 166.8 E
01 APR 07 1200 16.8 S 166.7 E 980 55
01 APR 07 1800 17.9 S 167.2 E 980 70 55 JTWC: 17.8 S, 167.7 E
01 APR 08 0000 18.7 S 167.9 E 975 60
01 APR 08 0600 19.7 S 168.1 E 975 60 60
01 APR 08 1200 20.4 S 169.3 E 975 60
01 APR 08 1800 20.5 S 169.5 E 980 55 55
01 APR 09 0000 21.1 S 170.5 E 985 50
01 APR 09 0600 21.8 S 170.5 E 985 50 50
01 APR 09 1200 22.8 S 170.5 E 985 50
01 APR 09 1800 23.2 S 170.1 E 985 50 50
01 APR 10 0000 23.9 S 169.9 E 987 45
01 APR 10 0600 24.4 S 169.7 E 987 40 45
01 APR 10 1200 25.0 S 169.6 E 990 40
01 APR 10 1800 25.5 S 169.7 E 988 35 45 Wellington Warnings
01 APR 11 0000 26.0 S 170.0 E 990 45
01 APR 11 0600 26.5 S 169.5 E 992 30 45 Extratropical
01 APR 11 1200 26.6 S 169.4 E 992 35
*************************************************************************
*************************************************************************
!!!!!! IMPORTANT NOTE - PLEASE READ !!!!!!
It has been brought to my attention that I should repeat in the
cyclone tracks file the caveat which is included in the Author's
Note at the end of the cyclone summaries. The tropical cyclone
tracks which I prepare are based upon the operational warnings/
advisories/advices/bulletins from the various tropical cyclone
warning agencies around the world. Users of these tracks should
be aware that they are preliminary and subject to revision during
post-seasonal analyses of the cyclones by the forecasters and
analysts at the several warning centers.
For the Atlantic and Northeast Pacific basins, official tropical
cyclone reports and "best tracks" can be found at the website of
the Tropical Prediction Center/National Hurricane Center:
http://www.nhc.noaa.gov>
The Joint Typhoon Warning Center's website contains links to their
Annual Tropical Cyclone Reports (ATCR) which include that agency's
"best tracks" for tropical cyclones in the Northwest Pacific basin,
the North Indian Ocean, and the Southern Hemisphere:
http://199.10.200.33/jtwc.html>
For the actual Best Tracks files, click on the link for Best Tracks
(in the menu on the left side of the screen) and follow instructions.
In the ATCR for 2000, the Chapter 5 tab contains verification
statistics of JTWC warnings for all the 2000 tropical cyclones in the
Northwest Pacific, North Indian Ocean, and the Southern Hemisphere.
There are gaps in the Best Tracks presented here for certain cyclones
during periods in which no warnings were being issued.
*************************************************************************
*************************************************************************
*************************************************************************
|
Document: trak0104.htm
Updated: 29th December 2006 |
[Australian Severe Weather index] [Copyright Notice] [Email Contacts] [Search This Site] |