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000 

WWUS20 KWNS 030222

SEL6

SPC WW 030222

IAZ000-ILZ000-WIZ000-031000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 106

NWS STORM PREDICTION CENTER NORMAN OK

925 PM CDT MON APR 2 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN AND EASTERN IOWA

       NORTHWEST ILLINOIS

       SOUTHWEST WISCONSIN



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 925 PM UNTIL

500 AM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 150

STATUTE MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH

NORTHEAST OF WATERLOO IOWA TO 35 MILES EAST OF DES MOINES IOWA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 104...WW 105...



DISCUSSION...ELEVATED STORMS SHOULD INCREASE IN NUMBER/STRENGTH OVER

THE NEXT SEVERAL HRS...WHERE UNIDIRECTIONAL CLOUD-LAYER SHEAR AND

INCREASING ELEVATED MOISTURE INFLOW WILL BECOME FAVORABLE FOR LARGE

HAIL



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50

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

MOTION VECTOR 26035.





...CORFIDI

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