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Invests 91P, 95P, 93S, 94S up-dates at 20/03utc, JTWC map & Abio/Abpw updated at 0730utc



JTWC IS ISSUIG 3HOURLY SATELLITE BULLETINS ON INVEST 93S.
JTWC IS ISSUIG 3HOURLY SATELLITE BULLETINS ON INVEST 93S.



SOUTHERN HEMISPHERE/SOUTH PACIFIC EAST OF THE DATELINE. INVEST 91P. ADVISORY(ABPW) ISSUED AT 20/06UTC.

THE AREA OF CONVECTION (INVEST 91P) PREVIOUSLY LOCATED  NEAR 17.9S 170.6W IS NOW LOCATED NEAR 15.4S 172.0W, APPROXIMATELY  190 KM SOUTHWEST OF PAGO PAGO, AMERICAN SAMOA. ANIMATED ENHANCED  INFRARED SATELLITE IMAGERY AND A SSMIS 91GHZ PASS SHOW SOME  FLARING CONVECTION IN THE EASTERN AND WESTER PERIPHERY OF AN EXPOSED  LOW LEVEL CIRCULATION. ENVIRONMENTAL ANALYSIS INDICATES MARGINALLY  FAVORABLE CONDITIONS FOR DEVELOPMENT DEFINED BY LOW TO MODERATE (10- 15KT) VERTICAL WIND SHEAR AND WARM (29-30C) SEA SURFACE  TEMPERATURES, OFFSET BY WEAK OUTFLOW ALOFT. GLOBAL MODELS ARE IN  GOOD AGREEMENT THAT 91P WILL CONTINUE ALONG ITS NORTH-NORTHWESTWARD  TRACK OVER THE NEXT 24-48 HOURS.  MAXIMUM SUSTAINED SURFACE WINDS  ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS  ESTIMATED TO BE NEAR 1001 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A  SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW.
THE AREA OF CONVECTION (INVEST 91P) PREVIOUSLY LOCATED NEAR 17.9S 170.6W IS NOW LOCATED NEAR 15.4S 172.0W, APPROXIMATELY 190 KM SOUTHWEST OF PAGO PAGO, AMERICAN SAMOA. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND A SSMIS 91GHZ PASS SHOW SOME FLARING CONVECTION IN THE EASTERN AND WESTER PERIPHERY OF AN EXPOSED LOW LEVEL CIRCULATION. ENVIRONMENTAL ANALYSIS INDICATES MARGINALLY FAVORABLE CONDITIONS FOR DEVELOPMENT DEFINED BY LOW TO MODERATE (10- 15KT) VERTICAL WIND SHEAR AND WARM (29-30C) SEA SURFACE TEMPERATURES, OFFSET BY WEAK OUTFLOW ALOFT. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT 91P WILL CONTINUE ALONG ITS NORTH-NORTHWESTWARD TRACK OVER THE NEXT 24-48 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1001 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW.


SOUTHERN HEMISPHERE/SOUTH PACIFIC EAST OF THE DATELINE: INVEST 95P.



SOUTHERN HEMISPHERE/SOUTH INDIAN OCEAN: INVEST 93S. ADVISORY(ABIO) BELOW ISSUED AT 20/0730UTC.

AN AREA OF CONVECTION (INVEST 93S) HAS PERSISTED NEAR  14.1S 59.0E, APPROXIMATELY 700 KM NORTH-NORTHEAST OF MAURITIUS.  ANIMATED ENHANCED MULTISPECTRAL SATELLITE IMAGERY DEPICTS BROAD  FLARING CONVECTION OVERHEAD OF A LOW LEVEL CIRCULATION (LLC). A  200455Z ASCAT B PASS SHOWS WINDS OF UP TO 25 KNOTS IN THE NORTHERN  PERIPHERY OF THE LLC. ENVIRONMENTAL ANALYSIS DEPICTS FAVORABLE  CONDITIONS FOR DEVELOPMENT DEFINED BY RADIAL OUTFLOW ALOFT, LOW TO  MODERATE (10-15KT) VERTICAL WIND SHEAR, AND WARM (29-30C) SEA  SURFACE TEMPERATURES. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT 93S  WILL TRACK WESTWARD INTO THE NORTH EASTERN COAST OF MADAGASCAR AS IT  INTENSIFIES OVER THE NEXT 48-72 HOURS.  MAXIMUM SUSTAINED SURFACE  WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS  ESTIMATED TO BE NEAR 1006 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A  SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO  LOW.
AN AREA OF CONVECTION (INVEST 93S) HAS PERSISTED NEAR 14.1S 59.0E, APPROXIMATELY 700 KM NORTH-NORTHEAST OF MAURITIUS. ANIMATED ENHANCED MULTISPECTRAL SATELLITE IMAGERY DEPICTS BROAD FLARING CONVECTION OVERHEAD OF A LOW LEVEL CIRCULATION (LLC). A 200455Z ASCAT B PASS SHOWS WINDS OF UP TO 25 KNOTS IN THE NORTHERN PERIPHERY OF THE LLC. ENVIRONMENTAL ANALYSIS DEPICTS FAVORABLE CONDITIONS FOR DEVELOPMENT DEFINED BY RADIAL OUTFLOW ALOFT, LOW TO MODERATE (10-15KT) VERTICAL WIND SHEAR, AND WARM (29-30C) SEA SURFACE TEMPERATURES. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT 93S WILL TRACK WESTWARD INTO THE NORTH EASTERN COAST OF MADAGASCAR AS IT INTENSIFIES OVER THE NEXT 48-72 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO LOW.

 



SOUTHERN HEMISPHERE/SOUTH INDIAN OCEAN: INVEST 94S.



19/18UTC. ECMWF AT +240H.


19/18UTC. ECMWF AT +240H.



Rédigé par PATRICK HOAREAU le Thursday, January 20th 2022 à 07:40