

293 

WWUS20 KWNS 212238

SEL2

SPC WW 212238

ILZ000-INZ000-220400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 472

NWS STORM PREDICTION CENTER NORMAN OK

640 PM EDT THU AUG 21 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  A SMALL PART OF NORTHEAST ILLINOIS

  PARTS OF NORTHERN AND CENTRAL INDIANA



* EFFECTIVE THIS THURSDAY NIGHT FROM 640 PM UNTIL MIDNIGHT EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTHWEST

OF VALPARAISO INDIANA TO 35 MILES EAST NORTHEAST OF MUNCIE

INDIANA.  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.



&&



DISCUSSION...CLUSTER OF STORMS IS COALESCING IN NW INDIANA IN AN

ENVIRONMENT WITH MODERATE INSTABILITY AND ROUGHLY 40 KT WNWLY FLOW

IN THE MID LEVELS.  A FEW DAMAGING GUSTS CAN BE EXPECTED WITH THESE

STORMS AS THEY MOVE GENERALLY ESEWD AT 30-40 KT ALONG THE SURFACE

WARM FRONT THROUGH LATE EVENING.



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 29035.





...THOMPSON



526 

WWUS20 KWNS 212238

SEL2

SPC WW 212238

ILZ000-INZ000-220400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 472

NWS STORM PREDICTION CENTER NORMAN OK

640 PM EDT THU AUG 21 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  A SMALL PART OF NORTHEAST ILLINOIS

  PARTS OF NORTHERN AND CENTRAL INDIANA



* EFFECTIVE THIS THURSDAY NIGHT FROM 640 PM UNTIL MIDNIGHT EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTHWEST

OF VALPARAISO INDIANA TO 35 MILES EAST NORTHEAST OF MUNCIE

INDIANA.  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.



&&



DISCUSSION...CLUSTER OF STORMS IS COALESCING IN NW INDIANA IN AN

ENVIRONMENT WITH MODERATE INSTABILITY AND ROUGHLY 40 KT WNWLY FLOW

IN THE MID LEVELS.  A FEW DAMAGING GUSTS CAN BE EXPECTED WITH THESE

STORMS AS THEY MOVE GENERALLY ESEWD AT 30-40 KT ALONG THE SURFACE

WARM FRONT THROUGH LATE EVENING.



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 29035.





...THOMPSON

