

335 

WWUS20 KWNS 221724

SEL4

SPC WW 221724

IAZ000-ILZ000-MOZ000-230000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 744

NWS STORM PREDICTION CENTER NORMAN OK

1125 AM CST MON NOV 22 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF EASTERN IOWA

       PARTS OF NORTHERN AND WESTERN ILLINOIS

       PARTS OF NORTHEASTERN MISSOURI



EFFECTIVE THIS MONDAY MORNING AND EVENING FROM 1125 AM UNTIL 600

PM CST.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHWEST OF

ROCKFORD ILLINOIS TO 50 MILES SOUTH OF QUINCY ILLINOIS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



DISCUSSION...THUNDERSTORMS EXPECTED TO INCREASE IN NUMBER AND

INTENSITY ALONG AND AHEAD OF STRONG COLD FROM ERN IA INTO NRN MO.

AIR MASS IS NOW MODESTLY UNSTABLE AND WITH THE VERY STRONG SHEAR

PROFILES IN PLACE...SEVERE STORMS ARE EXPECTED TO DEVELOP.  PRIMARY

THREAT WILL BE WIND DAMAGE...HOWEVER SUPERCELLS INCLUDING POSSIBLE

TORNADOES WILL BE POSSIBLE...PRIMARILY IN ADVANCE OF DEEPENING LOW

MOVING NEWD ACROSS ERN IA INTO WI AND EWD NEAR WARM FRONT ACROSS NRN

IL.



AVIATION...TORNADOES AND 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

450. MEAN STORM MOTION VECTOR 23045.





...HALES

