Latest analysis show that the system has moved N-W during past 6 hrs.
Present location is 12.8N , 85.7E.
From morning, the pressure and wind speed has remained the same.
JTWC warning and path projection at 8:30pm IST
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Present location is 12.8N , 85.7E.
From morning, the pressure and wind speed has remained the same.
JTWC warning and path projection at 8:30pm IST
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TROPICAL CYCLONE 01B (MAHASEN), LOCATED APPROXIMATELY 630 NM SOUTH-
SOUTHWEST OF KOLKATA, INDIA, HAS TRACKED NORTHWESTWARD AT 09 KNOTS
OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY
(MSI) SHOWS A LARGE CENTRAL DENSE OVERCAST FEATURE WITH A PARTIALLY
EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC). A 131116Z SSMIS 37 GHZ
MICROWAVE IMAGE SHOWS THE BULK OF THE DEEP CONVECTION IS SHEARED
WEST OF THE LLCC WITH SOME SHALLOW FRAGMENTED CONVECTIVE BANDING TO
THE NORTH. THE INITIAL POSITION IS BASED UPON THE MICROWAVE IMAGE
WITH FAIR CONFIDENCE. THE INITIAL INTENSITY REMAINS ASSESSED AT 50
KNOTS WHICH IS SLIGHTLY HIGHER THAN A DVORAK CURRENT INTENSITY
ESTIMATE OF 45 KNOTS FROM PGTW DUE TO THE TIGHTLY WRAPPED STRUCTURE
OF THE SYSTEM. UPPER LEVEL ANALYSIS INDICATES FAVORABLE WESTWARD
OUTFLOW IS BEING OFFSET BY MODERATE (15-20 KNOTS) VERTICAL WIND
SHEAR (VWS), WHICH IS EVIDENT IN THE PARTIALLY EXPOSED NATURE OF THE
SYSTEM. TC 01B IS CURRENTLY IN A WEAK STEERING ENVIRONMENT AS THE
SUBTROPICAL STEERING RIDGE EAST OF THE SYSTEM IS WEAKENING AND RE-
ORIENTING IN RESPONSE TO AN APPROACHING MIDLATITUDE SHORTWAVE
TROUGH, WHICH IS CURRENTLY OVER NORTHEASTERN INDIA. TC 01B IS
EXPECTED TO SLOWLY TRACK NORTH FOR THE NEXT DAY AS THE STEERING
RIDGE REMAINS WEAK AND CONTINUES TO RE-ORIENT. AFTER TAU 24, THE
SYSTEM IS EXPECTED TO ACCELERATE AND TRACK NORTHEAST AHEAD OF THE
TROUGH. AS THE SYSTEM GAINS LATITUDE, GRADUAL INTENSIFICATION IS
EXPECTED AS VWS RELAXES AND INCREASING POLEWARD OUTFLOW FROM THE
STRONG WESTERLIES NORTH OF THE SYSTEM ALLOWS FOR A PEAK INTENSITY OF
70 KNOTS AT TAU 72. AFTER TAU 72, TC 01B WILL BEGIN TO WEAKEN AS VWS
INCREASES AND LAND INTERACTION ALLOWS FOR DISSIPATION OVER LAND AT
TAU 120. DYNAMIC MODEL GUIDANCE HAS COME INTO BETTER AGREEMENT AS
NAVGEM HAS STARTED TO SHOW THE RECURVE SCENARIO, ALTHOUGH IT REMAINS
THE WESTERN OUTLIER. ALTHOUGH THERE IS A GENERAL AGREEMENT IN THE
RECURVE, MODELS CONTINUE TO VARY IN THE TIMING AND SPEED OF THE
TURN. IN LIGHT OF THIS, THE JTWC FORECAST IS LAID CLOSE TO MULTI-
MODEL CONSENSUS WITH LOW CONFIDENCE DUE TO THE LARGE SPREAD IN
SOLUTIONS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 131200Z IS 21 FEET.
All weather models other than NAVGEM model has predicted a Odisha coast landfall as Cyclone on 17-May.
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