Wednesday, June 10, 2015

Ashobaa - Oman landfall expected on evening/night of 11-Jun


10:30am, Cyclone Ashobaa. Nearing to Oman coast. Intensified !! Pressure 969mb, Pos 21.013N, 61.27E, Max Wind 137kmph http://ow.ly/i/bemms 

During past 12 hrs, Ashobaa has moved W-N-W towards Oman coast with intensification.

JTWC now expects a continued W-N-W movement and landfall along Oman coast S-E of Muscat on late-evening of 11-Jun.. http://ow.ly/i/bemsR 

JTWC warning at 8:30am
~~~~~~~~~~~~~~~~~~~~~~~~
TROPICAL CYCLONE (TC) 01A (ASHOBAA), LOCATED APPROXIMATELY 175 NM
EAST-NORTHEAST OF MASIRAH ISLAND, HAS TRACKED WEST-NORTHWESTWARD
AT 09 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE 
IMAGERY INDICATES A CONSOLIDATING LOW-LEVEL CIRCULATION CENTER 
(LLCC) WITH IMPROVED CURVED CONVECTIVE BANDING WRAPPING INTO A 
CENTRAL DENSE OVERCAST FEATURE, WHICH IS OBSCURING THE LLCC. A 
092146Z GCOM-W1 37 GHZ IMAGE DEPICTS TIGHTLY-CURVED BANDING WRAPPING 
INTO A WELL-DEFINED CENTER, THEREFORE, THERE IS GOOD CONFIDENCE IN 
THE CURRENT POSITION AND RECENT TRACK MOTION. BASED ON THE IMPROVED 
STRUCTURE AND DVORAK CURRENT INTENSITY ESTIMATES OF 3.5 (55 KNOTS) 
FROM KNES, THE CURRENT INTENSITY IS ASSESSED AT 55 KNOTS. 
ADDITIONALLY, THE ASCAT 25-KM IMAGE SHOWS 50 KNOT WINDS OVER THE 
SOUTHEAST QUADRANT OF THE SYSTEM. ANIMATED WATER VAPOR IMAGERY 
REVEALS VIGOROUS POLEWARD OUTFLOW INTO A SHORTWAVE TROUGH OVER 
PAKISTAN, WHICH IS OFFSET BY LOW TO MODERATE, EASTERLY VERTICAL WIND 
SHEAR. TC 01A IS EXPECTED TO TRACK WESTWARD THROUGH THE FORECAST 
PERIOD WITH A SLIGHT DECREASE IN FORWARD SPEED NEAR TAU 24 AS IT 
TRANSITIONS TO THE WESTERN STEERING RIDGE. DYNAMIC GUIDANCE IS NOW 
IN TIGHT AGREEMENT ON THE WESTWARD TRACK SCENARIO, THEREFORE, 
THERE IS HIGH CONFIDENCE IN THE JTWC FORECAST TRACK. TC 01A MAY 
INTENSIFY SLIGHTLY OVER THE NEXT 12 HOURS TO A PEAK INTENSITY OF 65 
KNOTS, HOWEVER, RAPID WEAKENING IS EXPECTED AFTER 36 DUE TO 
INCREASING INTERACTION WITH LAND AND SIGNIFICANT DRY AIR 
ENTRAINMENT. TC 01A IS EXPECTED TO TRACK INLAND AND DISSIPATE AFTER 
TAU 48. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 100000Z IS 18 FEET.

GFS expects the Ashobaa to make landfall as a Tropical Cyclone along Oman coast on midnight, 11-Jun ... http://ow.ly/i/bemFb 

June 10, 2015 at 11:06AM

Monsoon rain along Karnataka coast, S coast Maharastra... Ratnagiri = 30 mm Mangalore = 94 mm Goa = 31 mm. #iwm

June 10, 2015 at 11:05AM

#Chennai - Rainfall till 8:30am today, Nungambakkam = 2 mm Airport = 1 mm IWM Polichalur = 1.8 mm #iwm