404
WWUS20 KWNS 021321
SEL2
SPC WW 021321
PAZ000-021800-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 642
NWS STORM PREDICTION CENTER NORMAN OK
925 AM EDT WED SEP 2 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND SOUTH-CENTRAL PENNSYLVANIA
* EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 925 AM
UNTIL 200 PM EDT.
* PRIMARY THREATS INCLUDE...
SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
SUMMARY...A SMALL BOWING CLUSTER WILL LIKELY CONTINUE MOVING QUICKLY
SOUTHEASTWARD THIS MORNING AND EARLY AFTERNOON WHILE POSING A THREAT
FOR MAINLY SCATTERED SEVERE/DAMAGING WINDS. ISOLATED HAIL MAY ALSO
OCCUR WITH ANY STRONGER CORES ON THE WESTERN FLANK OF THE CLUSTER.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHWEST
OF STATE COLLEGE PA TO 45 MILES SOUTHWEST OF HARRISBURG PA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).
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
1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A
FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR
31040.
...GLEASON
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