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Good Chance for Svr Tstms on Sunday 8/21/11


Dark Energy

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Here's the way I worded the situation on twitter just now..."Thunderstorms over Eastern PA and West/Southwest NJ are organizing quickly and heading towards most unstable air, which is currently situated over Northern NJ, Southeast New York, and Western New England. With shortwave providing increased forcing, and low level jet strengthening, as well as effective shear already in place, these storms could organize into an MCS in the next few hrs. If this does occur, potential would exist for locally severe damaging winds, large hail, and isolated tornadoes. If storms remain unorganized, severe potential will still be there...but more scattered."

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MESOSCALE DISCUSSION 2034

NWS STORM PREDICTION CENTER NORMAN OK

0334 PM CDT SUN AUG 21 2011

AREAS AFFECTED...ERN NEW YORK STATE INTO WESTERN NEW ENGLAND

CONCERNING...SEVERE THUNDERSTORM WATCH 795...

VALID 212034Z - 212230Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 795

CONTINUES.

POTENTIAL FOR TORNADOES MAY INCREASE WITHIN PORTIONS OF WW 795 LATE

THIS AFTERNOON AND EARLY EVENING. IT IS POSSIBLE THAT A TORNADO

WATCH COULD BE ISSUED WITHIN THE NEXT HOUR OR TWO.

IN THE WAKE OF EARLIER CONVECTION...BREAKS IN CLOUD COVER ARE

ALLOWING FOR SUBSTANTIVE BOUNDARY LAYER DESTABILIZATION IN A

CORRIDOR ALONG AND WEST OF THE HUDSON/CHAMPLAIN VALLEY. THIS IS

WHERE SOUTHERLY NEAR SURFACE FLOW IS MAINTAINING UPPER 60S SURFACE

DEW POINTS. AS A SPEED MAXIMUM...EMANATING FROM THE APPROACHING

50-70 KT WESTERLY 500 MB JET...NOSES ACROSS THE REGION BETWEEN NOW

AND 23-01Z...MODELS INDICATE LOW-LEVEL FLOW FIELDS WILL CONTINUE TO

STRENGTHEN WITH ENLARGING LOW-LEVEL HODOGRAPHS...COINCIDENT WITH A

DEEPENING SURFACE LOW OVER SOUTHERN ONTARIO/SOUTHWEST QUEBEC. THIS

MAY BE ACCOMPANIED AN INCREASING RISK FOR TORNADIC SUPERCELL

DEVELOPMENT...PARTICULARLY ACROSS AREAS AROUND/WEST AND NORTH OF THE

NEW YORK CAPITAL DISTRICT.

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BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE NEW YORK NY

437 PM EDT SUN AUG 21 2011

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* TORNADO WARNING FOR...

WESTCHESTER COUNTY IN SOUTHEAST NEW YORK...

PUTNAM COUNTY IN SOUTHEAST NEW YORK...

* UNTIL 515 PM EDT...

* AT 435 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR YORKTOWN

HEIGHTS...OR NEAR MAHOPAC...MOVING EAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO

CARMEL...LAKE CARMEL AND BREWSTER

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS

THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY

ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU

ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE

LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO

NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A

WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS

AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN

INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO

COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A

SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE

NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM SUNDAY

EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND

SOUTHEAST NEW YORK.

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MESOSCALE DISCUSSION 2034

NWS STORM PREDICTION CENTER NORMAN OK

0334 PM CDT SUN AUG 21 2011

AREAS AFFECTED...ERN NEW YORK STATE INTO WESTERN NEW ENGLAND

CONCERNING...SEVERE THUNDERSTORM WATCH 795...

VALID 212034Z - 212230Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 795

CONTINUES.

POTENTIAL FOR TORNADOES MAY INCREASE WITHIN PORTIONS OF WW 795 LATE

THIS AFTERNOON AND EARLY EVENING. IT IS POSSIBLE THAT A TORNADO

WATCH COULD BE ISSUED WITHIN THE NEXT HOUR OR TWO.

IN THE WAKE OF EARLIER CONVECTION...BREAKS IN CLOUD COVER ARE

ALLOWING FOR SUBSTANTIVE BOUNDARY LAYER DESTABILIZATION IN A

CORRIDOR ALONG AND WEST OF THE HUDSON/CHAMPLAIN VALLEY. THIS IS

WHERE SOUTHERLY NEAR SURFACE FLOW IS MAINTAINING UPPER 60S SURFACE

DEW POINTS. AS A SPEED MAXIMUM...EMANATING FROM THE APPROACHING

50-70 KT WESTERLY 500 MB JET...NOSES ACROSS THE REGION BETWEEN NOW

AND 23-01Z...MODELS INDICATE LOW-LEVEL FLOW FIELDS WILL CONTINUE TO

STRENGTHEN WITH ENLARGING LOW-LEVEL HODOGRAPHS...COINCIDENT WITH A

DEEPENING SURFACE LOW OVER SOUTHERN ONTARIO/SOUTHWEST QUEBEC. THIS

MAY BE ACCOMPANIED AN INCREASING RISK FOR TORNADIC SUPERCELL

DEVELOPMENT...PARTICULARLY ACROSS AREAS AROUND/WEST AND NORTH OF THE

NEW YORK CAPITAL DISTRICT.

I think you meant this for the SNE thread, that speaks of the capital district and points east

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Well the firing mechanism to our west in association with the current storms will encounter the more riper environment as it pushes east. Will be interesting to watch the development over the next 1-2 hours and see how it unfolds.

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Yea our window of opportunity is a lot smaller compared to our friends just to the west of us. Who knows though we may get hit with some severe storms this evening but most likely for me, rain with some thunder is what I'm expecting.

Same well see though still got time

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