21P SERU 250226 0600 20.0S 171.3E SHEM 55 992

STORM WARNING 111 ISSUED FROM RSMC NADI Feb 260703 UTC.
TROPICAL CYCLONE SERU [SEH-ROO] CENTRE 985HPA CATEGORY 2 WAS LOCATED
NEAR 20.8 SOUTH 170.8 EAST AT 260600 UTC.
POSITION POOR.
REPEAT POSITION 20.8S 170.8E at 260600 UTC.
CYCLONE MOVING SOUTH AT 10 KNOTS. CYCLONE WEAKENING.
EXPECT SUSTAINED WINDS OF 50 KNOTS CLOSE TO THE CENTRE.
EXPECT WINDS OVER 47 KNOTS WITHIN 40 NAUTICAL MILES IN NE QUADRANT
AND WITHIN 40 NAUTICAL MILES IN SE QUADRANT
AND WITHIN 20 NAUTICAL MILES IN SW QUADRANT
AND WITHIN 20 NAUTICAL MILES IN NW QUADRANT
EXPECT WINDS OVER 33 KNOTS WITHIN 130 NAUTICAL MILES IN NE QUADRANT
AND WITHIN 120 NAUTICAL MILES IN SE QUADRANT
AND WITHIN 70 NAUTICAL MILES IN SW QUADRANT
AND WITHIN 70 NAUTICAL MILES IN NW QUADRANT
FORECAST POSITION NEAR 22.2S 171.6E AT 261800 UTC
AND NEAR 23.3S 172.7E AT 270600 UTC.
ALL VESSELS WITHIN 300 NAUTICAL MILES OF CENTRE ARE REQUESTED TO SEND
REPORTS EVERY THREE HOURS TO RSMC NADI. VOS REPORTING SHIPS USE
NORMAL CHANNELS. OTHER VESSELS FAX PLUS 679 6720190 OR EMAIL NADITCC
AT MET DOT GOV DOT FJ
THIS WARNING CANCELS AND REPLACES WARNING 110.

全球热带气旋监测公报
预报：柳龙生 签发：向纯怡 2025 年 02 月 26 日 18 时
“塞鲁”向南偏东方向移动
时 间：26日14时（北京时）
海 域：南太平洋
命 名：“塞鲁”，SERU
中心位置：南纬20.8度、东经170.8度
强度等级：二级热带气旋
最大风力：10级（25米/秒，相当于我国的强热带风暴级）
中心气压：985百帕
参考位置：新喀里多尼亚努美阿东偏北方向约475公里的洋面上
变化过程：过去24小时，“塞鲁”由9级加强到10级
预报结论：“塞鲁”将以每小时15公里左右的速度向南偏东方向移动，强度变化不大。

图4 卫星红外监测图像（北京时间2025年02月26日14时00分）

TPPS13 PGTW 260900
A. TROPICAL CYCLONE 21P (SERU)
B. 26/0840Z
C. 19.03S
D. 172.27E
E. FIVE/GK2A
F. T2.5/3.0/W2.5/24HRS STT: W0.5/03HRS
G. IR/EIR
H. REMARKS: 38A/PBO SBC/ANMTN. CNVCTN WRAPS .50 ON LOG10 SPIRAL
YIELDING A DT OF 2.5. MET YIELDS A 4.0. PT YIELDS A 3.5. DBO DT.
I. ADDITIONAL POSITIONS: NONE
PETERSEN

TXPS43 PHFO 261147
TCSSP3
SOUTH PACIFIC TROPICAL CYCLONE SUMMARY - FIXES
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1145 UTC WED FEB 26 2025
A. TROPICAL CYCLONE SERU (10F/21P)
B. 26/1100Z
C. 21.3S
D. 170.8E
E. HIMAWARI-9
F. T3.5/4.0/W0.5/24 HRS
G. IR/EIR
H. REMARKS...SHEAR PATTERN. LLCC IS 1/3° INTO DG YIELDING A DT OF
3.5. MET AND PT AGREE. FT IS BASED ON MET.
I. ADDL POSITIONS
NONE.
$$
JT

TXPS43 PHFO 261212 CCA
TCSSP3
SOUTH PACIFIC TROPICAL CYCLONE SUMMARY - FIXES
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1209 UTC WED FEB 26 2025
A. TROPICAL CYCLONE SERU (10F/21P)
B. 26/1100Z
C. 20.7S
D. 170.5E
E. HIMAWARI-9
F. T3.0/4.0/W1.0/24 HRS
G. IR/EIR
H. REMARKS...SHEAR PATTERN. LLCC IS 1/3° INTO DG YIELDING A DT OF
3.5. MET AND PT ARE 3.0. FT IS BASED ON MET.
I. ADDL POSITIONS
26/1048Z 20.74S 170.48E METOP-C ASCAT.
$$
JT

TPPS13 PGTW 261236
A. TROPICAL CYCLONE 21P (SERU)
B. 26/1130Z
C. 21.13S
D. 170.57E
E. FIVE/GK2A
F. T3.0/3.0/W1.0/24HRS STT: D0.5/03HRS
G. IR/EIR
H. REMARKS: 46A/PBO EMBD CNTR/ANMTN. LLCC EMBEDDED 35NM IN SHEARED
DENSE OVERCAST YIELDS A DT OF 3.5. MET YIELDS 3.0. PT YIELDS 3.0.
DBO PT.
I. ADDITIONAL POSITIONS: NONE
LINDGREN

21P SERU 250226 1200 20.8S 170.6E SHEM 50 994

TXPS24 KNES 261259
TCSWSP
A. 21P (SERU)
B. 26/1130Z
C. 20.6S
D. 170.4E
E. THREE/HIMAWARI-9
F. T2.5/3.5
G. IR/EIR/SWIR/PRXY/AMSU
H. REMARKS...CENTER IS EMBEDDED BY 1/3 DEGREE INTO THE LARGE COLD
OVERCAST RESULTING IN A DT OF 3.5 USING THE SHEAR PATTERN. MET IS
2.0. PT IS 2.5. THE FT IS BASED ON THE PT DUE TO UNCERTAINTY IN THE
CENTER LOCATION.
I. ADDL POSITIONS
26/0955Z 20.3S 170.2E AMSU
...TURK

GALE WARNING 112 ISSUED FROM RSMC NADI Feb 261258 UTC.
TROPICAL CYCLONE SERU [SEH-ROO] CENTRE 988HPA CATEGORY 1 WAS LOCATED
NEAR 21.3 SOUTH 171.1 EAST AT 261200 UTC. POSITION POOR.
REPEAT POSITION 21.3S 171.1E at 261200 UTC.
CYCLONE MOVING SOUTH-SOUTHEAST AT 10 KNOTS. CYCLONE WEAKENING.
EXPECT WINDS OVER 33 KNOTS WITHIN 130 NAUTICAL MILES IN NE QUADRANT
AND WITHIN 130 NAUTICAL MILES IN SE QUADRANT
AND WITHIN 70 NAUTICAL MILES IN SW QUADRANT
AND WITHIN 70 NAUTICAL MILES IN NW QUADRANT
FORECAST POSITION NEAR 22.6S 171.6E AT 270000 UTC
AND NEAR 23.6S 172.6E AT 271200 UTC.
ALL VESSELS WITHIN 300 NAUTICAL MILES OF CENTRE ARE REQUESTED TO SEND
REPORTS EVERY THREE HOURS TO RSMC NADI. VOS REPORTING SHIPS USE
NORMAL CHANNELS. OTHER VESSELS FAX PLUS 679 6720190 OR EMAIL NADITCC
AT MET DOT GOV DOT FJ
THIS WARNING CANCELS AND REPLACES WARNING 111.

TPPS13 PGTW 261531
A. TROPICAL CYCLONE 21P (SERU)
B. 26/1430Z
C. 21.38S
D. 170.63E
E. FIVE/GK2A
F. T3.0/3.0/W1.0/24HRS STT: S0.0/03HRS
G. IR/EIR
H. REMARKS: 46A/PBO EMBD CNTR/ANMTN. LLCC EMBEDDED 35NM IN SHEARED
DENSE OVERCAST YIELDS A DT OF 3.5. MET YIELDS 2.5. PT YIELDS 3.0.
DBO PT.
I. ADDITIONAL POSITIONS: NONE
LINDGREN