Menu

Invest 90W removed from the map//Invest 93S down-graded to Low//21L(WANDA) is subtropical and intensifying, 31/10utc updates



JTWC IS ISSUING 3HOURLY SATELLITE BULLETINS ON 93S.
JTWC IS ISSUING 3HOURLY SATELLITE BULLETINS ON 93S.


SOUTHERN HEMISPHERE/SOUTH INDIAN OCEAN: INVEST 93S. DOWN-GRADED TO LOW AT 31/0930UTC

THE AREA OF CONVECTION (INVEST 93S) PREVIOUSLY LOCATED  NEAR 12.1S 82.6E IS NOW LOCATED NEAR 13.1S 80.2E, APPROXIMATELY 1065  KM SOUTHEAST OF DIEGO GARCIA. ANIMATED ENHANCED INFRARED (EIR)  SATELLITE IMAGERY AND A 310802Z AMSR2 89GHZ IMAGE REVEAL A BROAD LOW  LEVEL CIRCULATION CENTER (LLCC) DEFINED BY WELL-DEFINED, BUT SHALLOW  BANDING WITH VERY WEAK CONVECTION SHEARED TO THE SOUTHWEST.  ENVIRONMENTAL ANALYSIS INDICATES AN UNFAVORABLE ENVIRONMENT FOR  DEVELOPMENT WITH HIGH (25-30 KNOTS) NORTHEAST VERTICAL WIND SHEAR  AND MARGINAL SEA SURFACE TEMPERATURES (26C) OFFSET BY GOOD POLEWARD  OUTFLOW. ADDITIONALLY, THERE IS SIGNIFICANT DRY AIR ENTRAINMENT  THROUGHOUT THE MID-LEVELS THAT IS HINDERING CONVECTIVE DEVELOPMENT.  GLOBAL MODELS ARE IN GOOD AGREEMENT THAT THE CIRCULATION ASSOCIATED  WITH INVEST 93S WILL CONTINUE TO TRACK WESTWARD, BUT IT IS NOT  EXPECTED TO DEVELOP AT THIS TIME. MAXIMUM SUSTAINED SURFACE WINDS  ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS  ESTIMATED TO BE NEAR 1004 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A  SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS DOWNGRADED  TO LOW.
THE AREA OF CONVECTION (INVEST 93S) PREVIOUSLY LOCATED NEAR 12.1S 82.6E IS NOW LOCATED NEAR 13.1S 80.2E, APPROXIMATELY 1065 KM SOUTHEAST OF DIEGO GARCIA. ANIMATED ENHANCED INFRARED (EIR) SATELLITE IMAGERY AND A 310802Z AMSR2 89GHZ IMAGE REVEAL A BROAD LOW LEVEL CIRCULATION CENTER (LLCC) DEFINED BY WELL-DEFINED, BUT SHALLOW BANDING WITH VERY WEAK CONVECTION SHEARED TO THE SOUTHWEST. ENVIRONMENTAL ANALYSIS INDICATES AN UNFAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH HIGH (25-30 KNOTS) NORTHEAST VERTICAL WIND SHEAR AND MARGINAL SEA SURFACE TEMPERATURES (26C) OFFSET BY GOOD POLEWARD OUTFLOW. ADDITIONALLY, THERE IS SIGNIFICANT DRY AIR ENTRAINMENT THROUGHOUT THE MID-LEVELS THAT IS HINDERING CONVECTIVE DEVELOPMENT. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT THE CIRCULATION ASSOCIATED WITH INVEST 93S WILL CONTINUE TO TRACK WESTWARD, BUT IT IS NOT EXPECTED TO DEVELOP AT THIS TIME. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1004 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS DOWNGRADED TO LOW.

INVEST 93S. GFS DEPICTING THE AREA LOSING ORGANIZATION AND GRADUALLY URAVALLING NEXT 24HOURS

IF NEEDED CLICK TO ANIMATE.
IF NEEDED CLICK TO ANIMATE.


ATLANTIC: SUBTROPICAL STORM 21L(WANDA). WARNING 2 ISSUED AT 31/09UTC

2121102500 313N 828W  15
2121102506 315N 815W  20
2121102512 320N 795W  25
2121102518 320N 760W  35
2121102600 342N 738W  45
2121102606 361N 711W  50
2121102612 375N 690W  50
2121102618 395N 681W  55
2121102700 408N 676W  55
2121102706 415N 693W  55
2121102712 400N 701W  55
2121102718 386N 686W  55
2121102800 390N 658W  50
2121102806 393N 638W  45
2121102812 397N 618W  45
2121102818 401N 598W  45
2121102900 406N 581W  45
2121102906 407N 568W  45
2121102912 406N 555W  45
2121102918 404N 541W  45
2121103000 401N 524W  45
2121103006 394N 511W  40
2121103012 385N 497W  40
2121103018 375N 479W  40
2121103100 365N 461W  45
2121103106 366N 442W  45
 

21L(WANDA). TRACK AND INTENSIFY FORECAST.
21L(WANDA). TRACK AND INTENSIFY FORECAST.

31/0630UTC.
31/0630UTC.
Rédigé par PATRICK HOAREAU le Sunday, October 31st 2021 à 15:15