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The Hudson Valley Thread


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We had a T storm about an hour + ago as the line now along the HV was in it's birth process.

I see the best line is now from central Columbia down through Dutchess and POU to just above SWF.

It brightens up for a only a very few seconds now and then thru cloudy skies, temp here dropped a degree. I think there are too many little areas of showers to let the skies clear in orange co atm in NW jersey and eastern Pa. Ulster Co and north and east are having a loud late morning early afternoon. Waiting on the SPC WRF

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Most of the HV left out.(for now)

ww0794_radar_big.gif

URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 794

NWS STORM PREDICTION CENTER NORMAN OK

1255 PM EDT SUN AUG 21 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

WESTERN CONNECTICUT

DISTRICT OF COLUMBIA

DELAWARE

MARYLAND

NEW JERSEY

EXTREME SOUTHEAST NEW YORK

CENTRAL AND EASTERN PENNSYLVANIA

NORTHERN VIRGINIA

THE EASTERN WEST VIRGINIA PANHANDLE

COASTAL WATERS

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1255 PM UNTIL

900 PM EDT.

WIDESPREAD DAMAGING WINDS

ISOLATED WIND GUSTS TO 70 MPH POSSIBLE

SCATTERED LARGE HAIL TO 2.0 INCHES IN DIAMETER

ISOLATED TORNADOES

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 90

STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH

NORTHEAST OF ALLENTOWN PENNSYLVANIA TO 55 MILES SOUTH SOUTHWEST

OF WASHINGTON DISTRICT OF COLUM. FOR A COMPLETE DEPICTION OF THE

WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.

DISCUSSION...THUNDERSTORMS WILL INCREASE IN COVERAGE/INTENSITY THIS

AFTERNOON IN CONJUNCTION WITH CONTINUED DAYTIME HEATING...AND AS A

MIDLEVEL TROUGH AND COLD FRONT MOVE EWD/SEWD ACROSS THE REGION.

ADDITIONALLY...A SURFACE LEE TROUGH FROM NRN VA TO ERN PA/SE NY WILL

HELP FOCUS THUNDERSTORM DEVELOPMENT. MODERATE-STRONG INSTABILITY

/MLCAPE AOA 2000 J PER KG/ AND INCREASING VERTICAL SHEAR THROUGH THE

AFTERNOON WILL BE FAVORABLE FOR STORMS TO PRODUCE DAMAGING WINDS AND

LARGE HAIL. A COUPLE OF SUPERCELLS MAY ALSO DEVELOP THIS AFTERNOON

NEAR THE LEE TROUGH...AND AN ISOLATED TORNADO WILL BE POSSIBLE WHERE

LOW-LEVEL SHEAR WILL BE SOMEWHAT STRONGER.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27035.

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TORNADO WARNING

NYC027-211800-

/O.NEW.KALY.TO.W.0007.110821T1721Z-110821T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE ALBANY NY

121 PM EDT SUN AUG 21 2011

THE NATIONAL WEATHER SERVICE IN ALBANY HAS ISSUED A

* TORNADO WARNING FOR...

NORTHERN DUTCHESS COUNTY IN EAST CENTRAL NEW YORK...

* UNTIL 200 PM EDT

* AT 117 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PLEASANT

VALLEY...OR 7 MILES NORTHEAST OF POUGHKEEPSIE...MOVING NORTHEAST AT

45 MPH.

* THE TORNADO WILL BE NEAR...

STANFORDVILLE BY 125 PM EDT...

AMENIA BY 135 PM EDT...

MILLERTON BY 145 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Full sun between clouds now imby.

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Yep. Models have been trending east with the cyclone, and while I doubt we end up with a Cat 2 sitting just to our east, I think we could end up with substantial impacts from the storm. Especially given all the heavy rain lately.

The NHC has been adjusting its 5 day track cone more northerly

post-463-0-26416500-1314031519.gif

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PUBLIC INFORMATION STATEMENT

NATIONAL WEATHER SERVICE NEW YORK NY

410 PM EDT MON AUG 22 2011

...STRAIGHT LINE WIND DAMAGE CONFIRMED FROM PLEASANTVILLETO CHAPPEQUA IN WESTCHESTER COUNTY NY...

LOCATION...PLEASANTVILLE TO CHAPPEQUA IN WESTCHESTERCOUNTY NY DATE...AUGUST 21 2011 ESTIMATED TIME...APPROXIMATELY 12:32 PM EDT TO12:40 PM EDT ESTIMATED MAXIMUM WIND SPEED...60 TO 80 MPH BEGINNINGLAT/LON...41.14N / 73.79W ENDING LAT/LON...41.16N / 73.76W

* FATALITIES...0

* INJURIES...0

* THE INFORMATION IN THIS STATEMENT IS PRELIMINARY ANDSUBJECT TO CHANGE PENDING FINAL REVIEW OF THE EVENT(S) AND PUBLICATION IN NWSSTORM DATA.

...SUMMARY...

THE NATIONAL WEATHER SERVICE IN COORDINATION WITHWESTCHESTER COUNTY OFFICE OF EMERGENCY MANAGEMENT PERFORMED A STORM SURVEY INWESTCHESTER COUNTY TODAY. A SERIES OF HEAVY SHOWERS AND THUNDERSTORMS PRODUCEDDAMAGING THUNDERSTORM WINDS AND TORRENTIAL RAIN ON SUNDAY AUGUST 21.

AT CHAPPEQUA...WE VISITED KIPP STREET NEAR THEINTERSECTION OF QUAKER ROAD (ROUTE 120) WHICH WAS PARTIALLY CLOSED. IN ADDITIONTO DOWNED LARGE TREE BRANCHES...THERE WERE AT LEAST 2 LARGE DOWNED TREES. PEAKWIND GUSTS WERE ESTIMATED AT 60 TO 70 MPH. STRAIGHT LINE WIND DAMAGE OCCURRED.

AT PLEASANTVILLE...WHERE THE MOST SIGNIFICANTTHUNDERSTORM WIND DAMAGE OCCURRED...PEAK WIND GUSTS WERE ESTIMATED AT 70 TO 80MPH BETWEEN 300 AND 500 WASHINGTON AVENUE. SEVERAL LARGE TREES AND BRANCHESWERE DOWNED. A FEW TREE TOPS WERE SNAPPED OFF. DAMAGE TO GUTTERS AND BACKYARDDECKS OCCURRED AS A RESULT OF FALLING TREES.

THIS INFORMATION CAN ALSO BE FOUND ON OUR WEBSITE ATWEATHER.GOV/NYC.

FOR REFERENCE...

STRAIGHT-LINE WINDS ARE GENERALLY ANY WIND THAT IS NOTASSOCIATED WITH ROTATION...USED MAINLY TO DIFFERENTIATE THEM FROM TORNADICWINDS.

...STRAIGHT LINE WIND DAMAGE CONFIRMED NEAR YORKTOWNHEIGHTS IN WESTCHESTER COUNTY NY...

LOCATION...YORKTOWN HEIGHTS IN WESTCHESTER COUNTY NYDATE...AUGUST 21 2011 ESTIMATED TIME...APPROXIMATELY 4:20 PM ESTIMATED MAXIMUMWIND SPEED...60 MPH LAT/LON...41.27N / 73.78W

* FATALITIES...0

* INJURIES...0

* THE INFORMATION IN THIS STATEMENT IS PRELIMINARY ANDSUBJECT TO CHANGE PENDING FINAL REVIEW OF THE EVENT(S) AND PUBLICATION IN NWSSTORM DATA.

AT YORKTOWN HEIGHTS...WE VISITED THE SITE ALONG HUNTERBROOK AND BAPTIST CHURCH ROADS. TREE BRANCHES AND AT LEAST 1 TREE WERE DOWNEDBY THUNDERSTORM WINDS...WITH ESTIMATED PEAK GUSTS OF 60 MPH. THIS WAS STRAIGHTLINE WIND DAMAGE. THERE WAS NO EVIDENCE OF TORNADIC DAMAGE.

FOR REFERENCE...

STRAIGHT-LINE WINDS ARE GENERALLY ANY WIND THAT IS NOTASSOCIATED WITH ROTATION...USED MAINLY TO DIFFERENTIATE THEM FROM TORNADICWINDS.

$$

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