

070 

WWUS20 KWNS 061731

SEL5

SPC WW 061731

MOZ000-070100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 625

NWS STORM PREDICTION CENTER NORMAN OK

1230 PM CDT THU SEP 6 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN AND CENTRAL MISSOURI



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL

800 PM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 100

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF

VICHY MISSOURI TO 30 MILES EAST OF WEST PLAINS MISSOURI.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU5).



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.



DISCUSSION...STRONG SFC HEATING OCCURRING DOWNSTREAM FROM SMALL

CONVECTIVE CLUSTER IN SW MO SUGGEST THAT SYSTEM SHOULD

STRENGTHEN...GIVEN RICH MOISTURE IN PLACE AND STEEP MID LVL LAPSE

RATES. COUPLED WITH 20-35 KT WNWLY MEAN MID LVL FLOW AND WEAK ASCENT

WITHIN SRN STREAM JET...SETUP MAY YIELD AN INCREASING RISK FOR DMGG

WIND AND POSSIBLY SVR HAIL THROUGH EARLY EVE.



AVIATION...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 550. MEAN STORM

MOTION VECTOR 28025.





...CORFIDI

