

000 

WWUS20 KWNS 200057

SEL6

SPC WW 200057

IAZ000-ILZ000-200500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 706

NWS STORM PREDICTION CENTER NORMAN OK

800 PM CDT SAT JUL 19 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN AND EASTERN IOWA

       FAR NORTHWEST ILLINOIS



EFFECTIVE THIS SATURDAY NIGHT FROM 800 PM UNTIL MIDNIGHT CDT.



TORNADOES...HAIL TO 2 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 50 STATUTE

MILES EITHER SIDE OF A LINE FROM 30 MILES NORTH OF MOLINE

ILLINOIS TO 50 MILES SOUTH OF DENISON IOWA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU6).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 703...WW 704...WW 705...



DISCUSSION...BROKEN LINE OF SUPERCELLS/BOW ECHOES WILL CONTINUE

SAGGING SSEWD ACROSS WW THROUGH THE EVENING WITHIN A VERY UNSTABLE

AIR MASS.  WSWLY LLJ FROM 25-30 KT IS FORECAST TO DEVELOP THIS

EVENING ACROSS THIS REGION...ENHANCING LOW LEVEL SHEAR AND POTENTIAL

FOR TORNADOES.  DAMAGING WINDS AND ISOLATED LARGE HAIL WILL BE

ADDITIONAL HAZARDS.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 34035.





...EVANS

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