

571 

WWUS20 KWNS 111418

SEL7

SPC WW 111418

OHZ000-LEZ000-112100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 627

NWS STORM PREDICTION CENTER NORMAN OK

1015 AM EDT MON JUL 11 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN AND CENTRAL OHIO OHIO

       LAKE ERIE



EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 1015 AM UNTIL

500 PM EDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES WEST OF

FINDLAY OHIO TO 35 MILES EAST SOUTHEAST OF AKRON OHIO.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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 624...WW 625...WW 626...



DISCUSSION...TWO BOWING SEVERE MCS/S ARE MOVING EWD ACROSS THE SWRN

GREAT LAKES.  THESE STORMS ARE EXPECTED TO SPREAD EWD/ESEWD INTO THE

AFTERNOON ALONG THE SRN EDGE OF STRONGER WESTERLY FLOW ALOFT.  AIR

MASS IN ADVANCE OF THE STORMS WILL UNDERGO HEATING AND MOISTENING

TODAY AND BECOME INCREASINGLY UNSTABLE WITH SBCAPE OF 2000-3000 J/KG

LIKELY THIS AFTERNOON.  THE PRIMARY THREAT WILL BE DAMAGING WIND

GUSTS ALTHOUGH LARGE HAIL THREAT WILL INCREASE THIS AFTERNOON AS THE

AIR MASS DESTABILIZES.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 27035.





...WEISS

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