JTWC热带气旋报告 2009年度 第二部分

Chapter 2 North Indian Ocean Tropical Cyclones

This chapter contains information on north Indian Ocean tropical cyclone activity during 2009 and the monthly distribution of Tropical Cyclone activity summarized for 1975 - 2009. North Indian Ocean tropical cyclone best tracks appear following Table 2-2.

Section 1 Informational Tables

Table 2-1 is a summary of Tropical Cyclone activity in the north Indian Ocean during the 2009 season. Five cyclones occurred in 2009, with only one system reaching intensity greater than 64 knots (TC 02B Aila). Table 2-2 shows the monthly distribution of Tropical Cyclone activity for 1975 - 2009.

Table 2-1

NORTH INDIAN OCEAN SIGNIFICANT TROPICAL CYCLONES FOR 2009

(01 JAN 2009 - 31 DEC 2009)

TC NAME* PERIOD** WARNINGS

ISSUED

EST MAX SFC

WINDS KTS MSLP (MB)***

1B Bijli 15 - 17 Apr 12 50 985

2B Aila 24 - 25 May 7 65 974

3B 05 Sep 1 40 992

4A Phyan 09 - 11 Nov 1 40 992

5B Ward 11 - 14 Dec 12 45 988

* As Designated by RSMC New Delhi

** Dates are based on Issuance of JTWC warnings on system.

*** MSLP converted from estimated maximum surface winds using Knaff-Zehr wind-

pressure relationship

Table 2 - 2

DISTRIBUTION OF NORTH INDIAN OCEAN TROPICAL CYCLONES

FOR 1975 - 2009

YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC TOTA L

1975 1 0 0 0 2 0 0 0 0 1 2 0 6

0 1 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 0 0 0 0 3 3 0 1976 0 0 0 1 0 1 0 0 1 1 0 1 5

0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 5 0 1977 0 0 0 0 1 1 0 0 0 1 0 2 5

0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 0 1 4 0 1978 0 0 0 0 1 0 0 0 0 1 2 0 4

0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 0 2 2 0 1979 0 0 0 0 1 1 0 0 2 1 2 0 7

0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 1 0 0 1 1 0 0 0 1 4 2 1980 0 0 0 0 0 0 0 0 0 0 1 1 2

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 2 0 1981 0 0 0 0 0 0 0 0 1 0 1 1 3

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 2 1 0 1982 0 0 0 0 1 1 0 0 0 2 1 0 5

0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2 0 1 0 0 0 0 0 2 3 0 1983 0 0 0 0 0 0 0 1 0 1 1 0 3

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 0 3 0 1984 0 0 0 0 1 0 0 0 0 1 2 0 4

0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 0 2 2 0 1985 0 0 0 0 2 0 0 0 0 2 1 1 6

0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 0 1 0 0 6 0 1986 1 0 0 0 0 0 0 0 0 0 2 0 3

0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 3 0 1987 0 1 0 0 0 2 0 0 0 2 1 2 8

0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 0 2 0 0 8 0 1988 0 0 0 0 0 1 0 0 0 1 2 1 5

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 1 0 1 4 0 1989 0 0 0 0 1 1 0 0 0 0 1 0 3

0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 2 0 1990 0 0 0 1 1 0 0 0 0 0 1 1 4

0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 1 2 1991 1 0 0 1 0 1 0 0 0 0 1 0 4

0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 2 2 0 1992 0 0 0 0 1 2 1 0 1 3 3 2 13

0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 0 0 1 0 0 0 0 0 0 1 0 2 1 2 1 0 0 2 0 3 8 2 1993 0 0 0 0 0 0 0 0 0 0 2 0 2

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 2 0 0 1994 0 0 1 1 0 1 0 0 0 1 1 0 5

0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 1 4 0 1995 0 0 0 0 0 0 0 0 1 1 2 0 4

0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 2 0 0 0 0 0 0 0 0 0 0 1 1 0 2 0 0 0 0 0 4 4 0 1997 0 0 0 0 1 0 0 0 1 1 1 0 4

0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 2 2 0 1998 0 0 0 0 2 1 0 0 1 1 2 1 8

0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 2 0 0 1 0 0 5 3 0 1999 0 1 0 0 1 1 0 0 0 2 0 0 5

0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 3 2 0 2000 0 0 0 0 0 0 0 0 0 2 1 1 4

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 0 0 0 1 0 1 3 0 2001 0 0 0 0 1 0 0 0 1 1 1 0 4

0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 2 1 2002 0 0 0 0 2 0 0 0 0 0 2 1 5

0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 0 5 0 2003 0 0 0 0 1 0 0 0 0 0 1 1 3

0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 2 1 0 2004 0 0 0 0 2 0 0 0 0 2 1 0 5

0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 0 0 0 0 0 1 4 0 2005 2 0 0 0 0 0 0 0 0 2 1 2 7

0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 0 2 0 0 6 1 2006 1 0 0 1 0 0 1 0 2 0 1 0 6

0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 2 0 0 0 0 0 1 0 0 0 0 1 5 0 2007 0 0 0 0 1 3 0 0 0 1 1 0 6

0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 3 3 0 2008 0 0 0 1 0 0 0 0 1 2 2 1 7

0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 2 0 0 1 0 1 5 1 2009 0 0 0 1 1 0 0 0 1 0 1 1 5

0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 1 0 1 4 0

(1975-2009)

MEAN 0.2 0.1 0.0 0.2 0.70.60.10.00.4 1.0 1.4 0.6 5.0 CASES 6 2 1 7 2520211335 46 20178 The criteria used in TABLE 1-6 are as follows:

1) If a tropical cyclone was first warned on during the last two days of a particular month and continued into the next month for longer than two days, then that system was attributed to the second month.

2) If a tropical cyclone was warned on prior to the last two days of a month, it was attributed to the first month, regardless of how long the system lasted.

3) If a tropical cyclone began on the last day of the month and ended on the first day of the next month, that system was attributed to the first month. However, if a tropical cyclone began on the last day of the month and continued into the next month for only two days, then it was attributed to the second month.

TABLE 2-2 Legend

Total month/year

GTE 64 knots (Typhoon) 34 to 63 knots

(Tropical

Storm)

LTE 33 knots

(Tropical

Depression)

Figure 2-1. North Indian Ocean Tropical Cyclones 01 – 05B.

Section 2 Cyclone Summaries

Each cyclone is presented, with the number and basin identifier assigned by JTWC, along with the RSMC assigned cyclone name. Dates are also listed when JTWC first designated various stages of development; as an area of interest (Poor classification), increased potential for development (Fair classification) and development/TC expected (Good classification). Furthermore, the first Tropical Cyclone Formation Alert (TCFA), and the first and final warnings dates are also presented with the number of warnings issued by JTWC. Maximum intensity and the number of warnings issued by JTWC are included as well. Landfall over major landmasses and approximate locations are presented as well.

The JTWC post-event reanalysis best track is also provided for each cyclone. Data included on the best track are position and intensity noted with cyclone symbols and color coded track. Best track positions are marked by date at 0000 UTC, as well as the beginning and end points. Best track position labels include the date-time, track speed in knots, and maximum wind speed in knots. A graph of best track intensity versus

time is presented. Fix plots on this graph are color coded by fixing agency.

Tropical Cyclone 01B (Bijli)

ISSUED POOR: N/A

ISSUED FAIR: 0600Z 14 Apr 2009 FIRST TCFA: 1100Z 14 Apr 2009 FIRST WARNING: 0000Z 15 Apr 2009 LAST WARNING: 1800Z 17 Apr 2009 MAX INTENSITY: 50 Kts

NUMBER OF WARNINGS: 12

Tropical Cyclone 02B (Aila)

ISSUED POOR: 1800Z 21 May 2009 ISSUED FAIR: 0430Z 22 May 2009 FIRST TCFA: 0600Z 23 May 2009 FIRST WARNING: 0300Z 24 May 2009 LAST WARNING: 1800Z 25 May 2009 MAX INTENSITY: 65 Kts

NUMBER OF WARNINGS: 7

Tropical Cyclone 03B

ISSUED POOR: 1200Z 04 Sep 2009 ISSUED FAIR: 1800Z 04 Sep 2009 FIRST TCFA: 0030Z 05 Sep 2009 FIRST WARNING: 0600Z 05 Sep 2009 LAST WARNING: 0600Z 05 Sep 2009 MAX INTENSITY: 40 Kts

NUMBER OF WARNINGS: 1

Tropical Cyclone 04A (Phyan)

ISSUED POOR: 1800Z 04 Nov 2009 ISSUED FAIR: 1500Z 06 Nov 2009 FIRST TCFA: 0900Z 09 Nov 2009 FIRST WARNING: 1800Z 09 Nov 2009 LAST WARNING: 1200Z 11 Nov 2009 MAX INTENSITY: 50 Kts

NUMBER OF WARNINGS: 8

Tropical Cyclone 05B (Ward)

ISSUED POOR: N/A

ISSUED FAIR: 1030Z 10 Dec 2009 FIRST TCFA: 0530Z 11 Dec 2009 FIRST WARNING: 1200Z 11 Dec 2009 LAST WARNING: 0600Z 14 Nov 2009 MAX INTENSITY: 45 Kts

NUMBER OF WARNINGS: 12

Chapter 3 South Pacific and South Indian Ocean Tropical Cyclones

This chapter contains information on South Pacific and South Indian Ocean TC activity that occurred during the 2009 tropical cyclone season (1 July 2008 – 30 June 2009) and the monthly distribution of TC activity summarized for 1975 - 2009.

Section 1 Informational Tables

Table 3-1 is a summary of TC activity in the Southern Hemisphere during the 2009 season. Table 3-2 provides the monthly distribution of Tropical Cyclone activity summarized for 1975 - 2009.

Table 3-1

SOUTHERN HEMISPHERE TROPICAL CYCLONES FOR 2009

(01 JULY 2008 - 30 JUNE 2009)

TC NAME PERIOD WARNINGS

ISSUED

EST MAX SFC

WINDS KTS

MSLP (MB)**

01S Asma 16 - 21 OCT 10 55 981 02S Anika 18 - 20 NOV 6 60 977 03S Bernard 19 - 20 NOV 3 40 992 04S Cinda 17 - 21 DEC 9 55 981 05S Billy 18 - 27 DEC 19 110 940 06S Dongo 9 - 12 JAN 7 55 981 07P Charlotte 11 JAN 1 40 992 08S Eric 18 - 20 JAN 5 40 992 09S Fanele 19 - 22 JAN 9 115 936 10S Dominic 25 - 27 JAN 7 50 985 11P Hettie 28 - 29 JAN 2 35 996 12P Ellie 31 JAN - 1 FEB 3 35 996 13S Gael 2 - 10 FEB 16 120 933 14S Freddy 6 - 9 FEB 8 55 981 15P Innis 17 - 18 FEB 3 40 992 16S Hina 21 - 24 FEB 6 65 974 17S Gabrielle 2 - 4 MAR 6 35 996 18P Hamish 5 - 12 MAR 14 135 921 19S 9 - 10 MAR 2 35 996 20P Joni 11 - 13 MAR 6 55 981 21P Ken 17 - 19 MAR 4 50 985 22S llsa 17 -23 MAR 13 100 948 23P Jasper 24 - 25 MAR 4 45 988 24S Izilda 24 - 26 MAR 7 65 974 25P Lin 4 - 5 APR 4 55 981 26S Jade 4 - 10 APR 16 65 974

***As Designated by TCWC Perth, Darwin, Brisbane, RSMC La Reunion, or RSMC Nadi, Fiji

**MSLP converted from estimated maximum winds using Knaff-Zehr wind pressure relationship. Number of

warnings includes amended warnings.

Table 3-2

DISTRIBUTION OF SOUTH PACIFIC AND SOUTH INDIAN OCEAN TROPICAL CYCLONES

FOR 1958 – 2009

YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTALS

1958 - 1977 AVERAGE*

- - - - 0.4 1.5 3.6 6.1 5.8 4.7 2.1 0.5 - 24.7

1981 - 2009

1981 0 0 0 1 3 2 6 5 3 3 1 0 24

1982 1 0 0 1 1 3 9 4 2 3 1 0 25

1983 1 0 0 1 1 3 5 6 3 5 0 0 25

1984 1 0 0 1 2 5 5 10 4 2 0 0 30

1985 0 0 0 0 1 7 9 9 6 3 0 0 35

1986 0 0 1 0 1 1 9 9 6 4 2 0 33

1987 0 1 0 0 1 3 6 8 3 4 1 1 28

1988 0 0 0 0 2 3 5 5 3 1 2 0 21

1989 0 0 0 0 2 1 5 8 6 4 2 0 28

1990 2 0 1 1 2 2 4 4 10 2 1 0 29

1991 0 0 1 1 1 3 2 5 5 2 1 1 22

1992 0 0 1 1 2 5 4 11 3 2 1 0 30

1993 0 0 1 1 0 5 7 7 2 2 2 0 27

1994 0 0 0 0 2 4 8 4 9 3 0 0 30

1995 0 0 0 0 2 2 5 4 5 4 0 0 22

1996 0 0 0 0 1 3 7 6 6 4 1 0 28

1997 1 1 1 2 2 6 9 8 3 1 3 1 38

1998 1 0 0 3 2 3 7 9 6 6 0 0 37

1999 1 0 1 1 1 6 6 8 7 2 0 0 33

2000 0 0 0 0 0 3 6 5 7 6 0 0 27

2001 0 1 0 0 1 1 4 6 2 5 0 1 21

2002 0 0 0 2 4 1 4 5 4 2 3 0 25

2003 0 0 1 0 2 5 5 7 5 2 1 1 29

2004 0 0 0 1 1 3 6 3 7 1 1 0 23

2005 0 0 1 1 2 2 7 7 4 2 0 0 26

2006 6 5 5 3 0 0 0 0 0 1 2 1 23

2007 0 0 0 0 1 2 2 5 6 6 1 1 24 2008 1 0 0 0 3 4 7 5 6 3 0 0 29

2009 0 0 0 1 2 2 7 4 8 3 0 0 27

(1981 - 2009)

MEAN 0.5 0.3 0.5 0.8 1.6 3.1 5.7 6.1 4.9 3.0 0.9 0.2 27.6 CASES 15 8 14 22 45 90 166 177 141 88 26 7 799

* (GRAY, 1978)

The criteria used in TABLE 3-2 are as follows:

1) If a TC was first warned on during the last two days of a particular month and continued into the next

month for longer than two days, then that system was attributed to the second month

2) If a TC was warned on prior to the last two days of a month, it was attributed to the first month, regardless

of how long the system lasted.

3) If a tropical cyclone began on the last day of the month and ended on the first day of the next month, that system was attributed to the first month. However, if a tropical cyclone began on the last day of the month and continued into the next month for only two days, then it was attributed to the second month.

Figure 3-1. Southern Indian Ocean Tropical Cyclones 15 Oct 2008 – 11 Apr 2009.

Figure 3-3. Southern Pacific Tropical Cyclones 24 Jan 2009 - 06 Apr 2009.

Section 2 Cyclone Summaries

Each cyclone is presented, with the number and basin identifier assigned by JTWC, along with the RSMC assigned cyclone name. Dates are also listed when JTWC first designated various stages of development; as an area of interest (Poor classification), increased potential for development (Fair classification) and development/TC expected (Good classification). Furthermore, the first Tropical Cyclone Formation Alert (TCFA), and the first and final warnings dates are also presented with the number of warnings issued by JTWC. Maximum intensity and the number of warnings issued by JTWC are included as well. Landfall over major landmasses and approximate locations are presented as well.

The JTWC post-event reanalysis best track is also provided for each cyclone. Data included on the best track are position and intensity noted with cyclone symbols and color coded track. Best track positions are marked by date at 0000 UTC, as well as the beginning and end points. Best track position labels include the date-time, track speed in knots, and maximum wind speed in knots. A graph of best track intensity versus

time is presented. Fix plots on this graph are color coded by fixing agency.

Tropical Cyclone 01S (Asma)

ISSUED POOR: 1230Z 15 Oct 2008 ISSUED FAIR: 0200Z 16 Oct 2008 FIRST TCFA: 1630Z 16 Oct 2008 FIRST WARNING: 1800Z 16 Oct 2008 LAST WARNING: 0600Z 21 Oct 2008 MAX INTENSITY: 55 Kts NUMBER OF WARNINGS: 10

ISSUED POOR: 0130Z 18 Nov 2008 ISSUED FAIR: 0630Z 18 Nov 2008 FIRST TCFA: 0930Z 18 Nov 2008 FIRST WARNING: 1800Z 18 Nov 2008 LAST WARNING: 1800Z 20 Nov 2008 MAX INTENSITY: 60 Kts

NUMBER OF WARNINGS: 6

ISSUED POOR: 1800Z 15 Nov 2008 ISSUED FAIR: N/A

FIRST TCFA: 0830Z 19 Nov 2008 FIRST WARNING: 1800Z 19 Nov 2008 LAST WARNING: 1800Z 20 Nov 2008 MAX INTENSITY: 40 Kts

NUMBER OF WARNINGS: 3

ISSUED POOR: N/A

ISSUED FAIR: 1200Z 13 Dec 2008 FIRST TCFA: 2200Z 16 Dec 2008 FIRST WARNING: 0000Z 17 Dec 2008 LAST WARNING: 0000Z 21 Dec 2008 MAX INTENSITY: 55 Kts

NUMBER OF WARNINGS: 9

ISSUED POOR: 1800Z 16 Dec 2008 ISSUED FAIR: N/A

FIRST TCFA: 0830Z 18 Dec 2008 FIRST WARNING: 1200Z 18 Dec 2008 LAST WARNING: 0600Z 27 Dec 2008 MAX INTENSITY: 110 Kts NUMBER OF WARNINGS: 19

ISSUED POOR: 0300Z 8 Jan 2009 ISSUED FAIR: 0830Z 8 Jan 2009 FIRST TCFA: 1500Z 8 Jan 2009 FIRST WARNING: 1200Z 9 Jan 2009 LAST WARNING: 1200Z 12 Jan 2009 MAX INTENSITY: 55 Kts NUMBER OF WARNINGS: 7

Tropical Cyclone 07P (Charlotte) ISSUED POOR: 1500Z 9 Jan 2009 ISSUED FAIR: N/A

FIRST TCFA: 0100Z 11 Jan 2009 FIRST WARNING: 0600Z 11 Jan 2009 LAST WARNING: 0600Z 11 Jan 2009 MAX INTENSITY: 40 Kts NUMBER OF WARNINGS: 1