

000 

WWUS20 KWNS 100828

SEL6

SPC WW 100828

ARZ000-ILZ000-KYZ000-MOZ000-TNZ000-101600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 186

NWS STORM PREDICTION CENTER NORMAN OK

325 AM CDT THU APR 10 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHEAST ARKANSAS

       SOUTHERN ILLINOIS

       WESTERN KENTUCKY

       SOUTHEAST MISSOURI

       WEST TENNESSEE



EFFECTIVE THIS THURSDAY MORNING FROM 325 AM UNTIL 1100 AM CDT.



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 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHEAST OF CAPE

GIRARDEAU MISSOURI TO 50 MILES WEST OF MEMPHIS TENNESSEE.  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 184...WW 185...



DISCUSSION...NRN AR MCS WITH EMBEDDED LEWPS/SUPERCELLS EXPECTED TO

CONTINUE MOVE ENE...WHILE INDIVIDUAL STORMS MOVE RAPIDLY NE WITHIN

IT.  AREA VWP AND SFC PRESSURE CHANGE DATA SHOW EXIT REGION OF

STRONG /50+ KT/ SSWLY LLJ OVER WW REGION...WITH JET LIKELY TO

STRENGTHEN AND FURTHER MOISTEN.  COUPLED WITH RECOVERING BOUNDARY

LAYER ACROSS SE MO AREA...EXPECT THAT EXISTING TORNADO THREAT IN NRN

AR WILL PERSIST AND EXPAND NE INTO WW THROUGH AT LEAST MID MORNING.



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

400. MEAN STORM MOTION VECTOR 24040.





...CORFIDI

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