Akshay Deoras
Severe Weather Forecaster
A very Severe Thunderstorm from the extension of the present Western Disturbance or effect of Trough digging happened today afternoon at Himachal Pradesh and prominently at Chandigarh and Punjab. Around 1500hrs(IST) 0930hrs(GMT), intense thunderstorm with well developed updraft formed over Punjab as a result of rich environment from the western disturbance over Jammu and Kashmir coupled with a strong vortex extending from mid to low level atmosphere helping the updraft. Hails of the size of pea (In Ludhiana,Punjab) and possibly of little large size struck Chandigarh
and most areas of Punjab which happened shortly after IT WAS HIGHLY DARK LIKE LATE EVENING IN CHANDIGARH DUE TO DENSE CLOUD COVER OF CUMULONIMBUS CLOUD.
Heavy rains then followed the setup with gusty winds,a typical feature of Mean level Vortex system in atmosphere though CAPE was minimal.
People in Punjab had to use their vehicles light,street lights at that time.
(RIGHT- 500MB MAP OF 00Z GFS SHOWING POSITIVE VORTICITY AT MID LEVELS OVER PUNJAB WHICH HAS BEEN CAUSE OF THE EVENT. POSITIVE VORTICITY FAVORS STORMS DEVELOPMENT AND FIRING)
Around 1645hrs(1115hrs GMT) A dust storm with gusty winds and Hails with rains also hit Delhi city and caused conditions similar to Punjab!
2] SUPER CYCLONE GIRI
Super cyclone Giri or CYCLONE FULL OF SURPRISES !! Strengthened to a Cat 4 today! before making a landfall at Myanmar around Kyaukphyu at late afternoon period
The NRL (Naval Research Lab) reported a pressure at minimum of 922mb at landfall with winds of 250km/hr ( 1 min sustained ) and A CATEGORY 4 LEVEL ON SAFFIR SIMPSON SCALE
A prominent reason to why GIRI became a very strong like a mountain( Giri is sanskrit word for Mountain) is that it was a cyclone having slow forward speed and no trouble from Wind shears as they had troubled Deep Depression BOB 03 which had struck Orissa past week.
BOB 03 had 20kt+ Wind shear interference and so it didn't strengthen despite being a Slow forward speed tropical low!
Giri had fair 10kt or less wind shears and rest conditions were OUTRAGEOUS!
(RIGHT- TROPICAL CYCLONE CAT 4 GIRI AT LANDFALL AROUND 0630PM IST I.E 1300HRS GMT)
Giri must have made extensive damage in Rakhine state of Myanmar
See Mr.Ashok Patel's, Fellow Weather expert 's page for more last minute updates on Giri
as I was unable to provide !
3] Severe Weather to unfurl in North Central Texas
Severe thunderstorms with tornadic features are likely in North Central Tx and SE Oklahoma today as a result of the eastward progression of Linear storms created yesterday at North Mexico and favored Convection due over North Central TX due to Cape near 2000J/Kg nice Southerly Low level jets of 30kt and favored moisture for convection with no CAP.
The Hodographs are in agreement for nice rotations around North of Denton,Texas which is my Tornado Target for the day as conditions come together here East of cold front and near to outflow boundary. Rapid convection will intensify to some supercells providing a tornado and hails here and SPC SHIFTS 5% tornado risk to North Central TX,SOme southern areas of OK from Panhandle which was in early morning on Friday!
4] APPROACHING WINTER IN INDIA
Since the effect from BOB 03 sweep are now minimising and the Anticyclone will regenerate pushing away moistures at low levels, A well North-South air flow at low levels and strong cooling in north will pull cool air over Central India from this weekend and causing temperatures to drop from next week in Central India,Nagpur also while minimum temperatures in much of Punjab continue to be around 15C!
SO FRIDAY,22ND OCT 2010 WAS MARKED AS MULTIPLE WEATHER EVENT DAY
Multiple Weather events happened/happening today
1) Kashmir valley receives first snowfall
2) Strong Thunderstorm with PEA size hails in Chandigarh and Punjab
3) Landfall of Tropical Cyclone Giri in Myanmar
4) Severe Weather will happen with some tornadoes in North-Central Texas,USA
ITS HAPPENING
1) Kashmir valley receives first snowfall
2) Strong Thunderstorm with PEA size hails in Chandigarh and Punjab
3) Landfall of Tropical Cyclone Giri in Myanmar
4) Severe Weather will happen with some tornadoes in North-Central Texas,USA
ITS HAPPENING
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