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JULY 2012 Severe Weather /Convection Discussion


NEG NAO

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Cell near HPN just got warned.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO

GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS

IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE

STRUCK BY LIGHTNING.

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Cell near HPN just got warned.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO

GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS

IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE

STRUCK BY LIGHT

NING.

Absolutely hail with that, like I said.

Big ones too.

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ANOTHER SEVERE WATCH http://www.spc.noaa.gov/products/watch/

URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 491

NWS STORM PREDICTION CENTER NORMAN OK

1245 PM EDT WED JUL 18 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

DISTRICT OF COLUMBIA

DELAWARE

MARYLAND

NEW JERSEY

SOUTHEAST NEW YORK

CENTRAL AND EASTERN PENNSYLVANIA

NORTHERN VIRGINIA

EASTERN WEST VIRGINIA PANHANDLE

COASTAL WATERS

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL

900 PM EDT.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES EAST OF

STAUNTON VIRGINIA TO 25 MILES EAST NORTHEAST OF WILKESBARRE

PENNSYLVANIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).

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.

OTHER WATCH INFORMATION...CONTINUE...WW 490...

DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND

INTENSITY THIS AFTERNOON AHEAD OF COLD FRONT AND LEE TROUGH.

AMBIENT WARM SECTOR IS HOT AND HUMID WITH MLCAPE VALUES OF

2000-3000+ J/KG. WHEN COUPLED WITH STEEPENING LOW-LEVEL LAPSE RATES

AND HIGH PW VALUES...SETUP WILL FAVOR THE DEVELOPMENT OF INTENSE WET

MICROBURSTS CAPABLE OF DAMAGING WINDS.

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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 31020.

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Took a pic of the TCU that popped up in a matter of minutes JUST to my north. The pic doesn't really do the clouds justice. They literally blew up in a matter of minutes.

post-544-0-30530300-1342629831_thumb.jpg

There were some impressive clouds to its north as well. I tried to take pics but got stuck in almost 1/2 hour traffic since the main road was closed. Another cell just popped to my north.

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