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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 13

NWS STORM PREDICTION CENTER NORMAN OK

445 PM CST THU FEB 20 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  CENTRAL AND EASTERN ILLINOIS

  WESTERN INDIANA



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 445 PM UNTIL

  900 PM CST.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH NORTHWEST OF

DANVILLE ILLINOIS TO 25 MILES SOUTHEAST OF MOUNT VERNON ILLINOIS.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU3).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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...THIS TORNADO WATCH REPLACES SEVERE

THUNDERSTORM WATCH NUMBER 12. WATCH NUMBER 12 WILL NOT BE IN

EFFECT AFTER 445 PM CST. CONTINUE...WW 9...WW 10...WW 11...



DISCUSSION...SFC PRESSURE FALLS AND 60 KT SSWLY NEAR-SFC FLOW

SUGGEST THAT APPRECIABLE LOW-LVL AIR MASS RECOVERY WILL CONTINUE

OVER THE NEXT FEW HOURS AHEAD OF EXISTING BROKEN LINE OF SUPERCELLS

IN CNTRL IL. CONTINUED DEEPENING OF ASSOCIATED SFC LOW NOW NEAR

DVN...COUPLED WITH CONTINUED ENE MOTION OF STRONG MID-LVL SHORTWAVE

IMPULSE...AND 700 MB SWLY WIND SPEEDS INCREASING TO AOA 70 KTS

TOGETHER SUGGEST POTENTIAL FOR A COUPLE TORNADOES...IN ADDITION TO

DMGG WIND.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 24055.





...CORFIDI

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