罗德里格斯岛东南热带气旋第13号“茵杜萨”(29S.Indusa) - 逐渐南下 - MFR:70KT JTWC:90KT

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全球热带气旋监测公报
预报：董议文、张增海  签发：许映龙  2026 年 04 月 05 日 18 时
“茵杜萨”向南偏东方向移动

时  间: 5日14时（北京时，下同）

海  域: 西南印度洋

命  名: “茵杜萨”，INDUSA

中心位置: 南纬28.0度，东经70.7度

强度等级: 强热带风暴

最大风力: 10级，28米/秒，相当于我国的强热带风暴级

中心气压: 981百帕

参考位置: 距离西南印度洋毛里求斯路易港东南方向约1605公里

变化过程: 过去24小时，“茵杜萨”由12级减弱为10级

预报结论: 预计，“茵杜萨”将以每小时40-45公里的速度向南偏东方向移动，强度逐渐减弱。



图1  卫星红外监测图像（北京时间2026年4月5日14时00分）

“迈拉”向东南方向移动

时  间: 5日14时

海  域: 澳大利亚附近海域

命  名: “迈拉”，MAILA

中心位置: 南纬9.1度，东经154.3度

强度等级: 热带气旋（2级）

最大风力: 10级，28米/秒，相当于我国的强热带风暴级

中心气压: 978百帕

参考位置: 距离莫尔斯比港东方向约770公里

变化过程: 过去12小时，“迈拉”强度基本维持

预报结论: 预计未来两天，“迈拉”将以每小时4公里左右的速度向东南方向移动，后期转向西南方向移动，强度逐渐增强。



图2  卫星红外监测图像（北京时间2026年4月5日14时00分）

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WTIO30 FMEE 051305
RSMC / TROPICAL CYCLONE CENTER / LA REUNION
TROPICAL CYCLONE FORECAST WARNING (SOUTH-WEST INDIAN OCEAN)

0.A WARNING NUMBER: 17/13/20252026
1.A POST-TROPICAL DEPRESSION 13 (INDUSA)

2.A POSITION 2026/04/05 AT 1200 UTC:
WITHIN 30 NM RADIUS OF POINT 29.7 S / 71.4 E
(TWENTY NINE    DECIMAL SEVEN   DEGREES SOUTH AND
SEVENTY ONE    DECIMAL FOUR   DEGREES EAST)
MOVEMENT: SOUTH-SOUTH-EAST 21 KT

3.A DVORAK ANALYSIS: 3.0/3.5/W 0.5/6 H

4.A CENTRAL PRESSURE: 989 HPA
5.A MAX AVERAGE WIND SPEED (10 MN): 50 KT
RADIUS OF MAXIMUM WINDS (RMW): NIL

6.A EXTENSION OF WIND BY QUADRANTS (KM):
28 KT NE: 280 SE: 280 SW: 95 NW: 95
34 KT NE: 205 SE: 205 SW: 0 NW: 0
48 KT NE: 55 SE: 55 SW: 0 NW: 0

7.A FIRST CLOSED ISOBAR (PRESSURE / AVERAGE DIAM): 1010 HPA / 400 KM
8.A VERTICAL EXTENSION OF CYCLONE CIRCULATION: DEEP

1.B FORECASTS (WINDS RADII IN KM):
12H: 2026/04/06 00 UTC: 33.8 S / 73.5 E, VENT MAX= 040 KT,
POST-TROPICAL DEPRESSION
28 KT NE: 325 SE: 240 SW: 130 NW: 130
34 KT NE: 215 SE: 165 SW: 75 NW: 0

24H: 2026/04/06 12 UTC: 37.5 S / 75.7 E, VENT MAX= 035 KT,
EXTRATROPICAL DEPRESSION
28 KT NE: 260 SE: 270 SW: 150 NW: 165
34 KT NE: 140 SE: 175 SW: 75 NW: 0

36H: 2026/04/07 00 UTC: 41.4 S / 79.4 E, VENT MAX= 030 KT,
EXTRATROPICAL DEPRESSION
28 KT NE: 305 SE: 185 SW: 0 NW: 220

48H: 2026/04/07 12 UTC: 43.6 S / 83.0 E, VENT MAX= 030 KT,
EXTRATROPICAL DEPRESSION
28 KT NE: 185 SE: 130 SW: 0 NW: 0

2.B LONGER-RANGE OUTLOOK:
NIL

2.C ADDITIONAL INFORMATION:
PT=3.0 CI=3.5

OVER THE PAST SIX HOURS, THE CLOUD PATTERN HAS CONTINUED TO
DETERIORATE, BECOMING INCREASINGLY ASYMMETRICAL DUE TO STRONG
NORTHWESTERLY WIND SHEAR. THE 0856Z GCOM-W SWATH SHOWS THAT THE
UPPER-LEVEL CENTER IS SHIFTED APPROXIMATELY 40 MN SOUTHEAST OF THE
LOWER-LEVEL CENTER. FURTHERMORE, THE SATELLITE ANIMATION SUGGESTS THE
ONSET OF BAROCLINIC FRONTOGENESIS. WE CAN THEREFORE ESTIMATE THAT THE
SYSTEM HAS BEGUN TO LOSE ITS TROPICAL CHARACTERISTICS, JUSTIFYING A
CLASSIFICATION AS A POST-TROPICAL DEPRESSION. IN THE ABSENCE OF
RECENT SCATTEROMETRIC SWATHS, INTENSITY IS ESTIMATED BASED ON A
SUBJECTIVE DVORAK ANALYSIS WITH MAX WIND SPEEDS OF 50 KT.

REGARDING THE TRACK, THE SYSTEM IS EXPECTED TO CONTINUE MOVING
RAPIDLY SOUTH-SOUTHEASTWARD STEERED BY THE UPPER-LEVEL RIDGE OVER THE
EASTERN PART OF THE BASIN AND A DEEP TROUGH APPROACHING FROM THE
WEST. UNCERTAINTY REGARDING THE TRACK IS LOW.

REGARDING THE INTENSITY, THE SYSTEM IS EXPECTED TO CONTINUE ITS
EXTRATROPICAL TRANSITION WHILE WEAKENING FURTHER AS IT MOVES OVER
INCREASINGLY COLDER WATERS IN AN ENVIRONMENT WITH STRONG WIND SHEAR.

NO SIGNIFICANT IMPACT IS EXPECTED ON INHABITED LAND OVER THE NEXT 72
HOURS.

LAST BULLETIN ISSUED BY RSMC LA REUNION REGARDS THIS SYSTEM WHICH IS
EXPECTED TO EVACUATE TOWARD MIDDLE LATITUDES WHILE WEAKENING AND
LOSING ITS TROPICAL CHARACTERISTICS.