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
Southeast and Eastern Pennsylvania
Northern and Eastern Virginia
Far Eastern West Virginia
* 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).
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
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
...A STRONG THUNDERSTORM WILL AFFECT PARTS OF LANCASTER...YORK...AND
ADAMS COUNTIES UNTIL 315 PM EDT...
At 251 PM EDT, Doppler radar indicated a strong thunderstorm over
Gettysburg, moving northeast at 35 mph.
Wind gusts up to 50 mph are possible.
Locations impacted include...
York, Hanover, Weigelstown, Elizabethtown, Gettysburg, Parkville, Red
Lion, Spry, Dallastown, Hampton, Shiloh, East York,
Stonybrook-Wilshire, West York, Maytown, Codorus, Grantley, Tyler
Run-Queens Gate, McSherrystown and Valley View.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 3975 7730 4001 7732 4003 7719 4005 7717
4013 7674 4012 7672 4014 7671 4016 7658
TIME...MOT...LOC 1851Z 255DEG 28KT 3986 7723