Thursday, June 3, 2021

Severe Thunderstorm Watch Issued for Parts of Our Area...


URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 234

NWS Storm Prediction Center Norman OK

245 PM EDT Thu Jun 3 2021


The NWS Storm Prediction Center has issued a


* Severe Thunderstorm Watch for portions of 

  District Of Columbia

  Delaware

  Maryland

  New Jersey

  Southeast and Eastern Pennsylvania

  Northern and Eastern Virginia

  Far Eastern West Virginia

  Coastal Waters


* Effective this Thursday afternoon and evening from 245 PM until

  900 PM EDT.


* Primary threats include...

  Scattered damaging wind gusts to 65 mph likely

  A tornado or two possible


SUMMARY...Strong to severe thunderstorms are expected to develop

this afternoon initially across southeast Pennsylvania into

Maryland/Virginia Blue Ridge vicinity. A relatively moist/unstable

environment along with moderately strong southwesterly deep-layer

winds will support sustained multicells and potentially some

supercells. Thunderstorm-related wind damage is the most probable

risk, but some hail and a low tornado risk will exist as well.


The severe thunderstorm watch area is approximately along and 70

statute miles east and west of a line from 35 miles northeast of

Allentown PA to 45 miles east southeast of Charlottesville VA. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU4).


PRECAUTIONARY/PREPAREDNESS ACTIONS...


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.


&&


AVIATION...A few severe thunderstorms with hail surface and aloft to

1 inch. Extreme turbulence and surface wind gusts to 55 knots. A few

cumulonimbi with maximum tops to 500. Mean storm motion vector

24025.


...Guyer



======================================================================


796 

WWUS40 KWNS 031845

WWP4  


SEVERE THUNDERSTORM WATCH PROBABILITIES FOR WS 0234

NWS STORM PREDICTION CENTER NORMAN OK

0141 PM CDT THU JUN 03 2021


WS 0234

PROBABILITY TABLE:

PROB OF 2 OR MORE TORNADOES                        :  20%

PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES       :  05%

PROB OF 10 OR MORE SEVERE WIND EVENTS              :  60%

PROB OF 1 OR MORE WIND EVENTS >= 65 KNOTS          :  10%

PROB OF 10 OR MORE SEVERE HAIL EVENTS              :  10%

PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES          : <05%

PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS :  80%


&&

ATTRIBUTE TABLE:

MAX HAIL /INCHES/                            : 1.0

MAX WIND GUSTS SURFACE /KNOTS/               : 55

MAX TOPS /X 100 FEET/                        : 500

MEAN STORM MOTION VECTOR /DEGREES AND KNOTS/ : 24025

PARTICULARLY DANGEROUS SITUATION             : NO


&&

FOR A COMPLETE GEOGRAPHICAL DEPICTION OF THE WATCH AND

WATCH EXPIRATION INFORMATION SEE WOUS64 FOR WOU4.


$$



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