

334 

WWUS20 KWNS 021822

SEL7

SPC WW 021822

ILZ000-MOZ000-030200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 517

NWS STORM PREDICTION CENTER NORMAN OK

125 PM CDT THU OCT 2 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHERN ILLINOIS

  EAST-CENTRAL AND SOUTHEAST MISSOURI



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 125 PM UNTIL

  900 PM CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST OF

FARMINGTON MISSOURI TO 70 MILES EAST OF SALEM ILLINOIS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 515...WW 516...



DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND

INTENSITY THIS AFTERNOON ALONG AND SOUTH OF AN OUTFLOW BOUNDARY

WHICH MAY ATTEMPT TO MOVE SLOWLY NWD ACROSS CNTRL PORTIONS OF THE

WATCH AREA. THE COMBINATION OF MODERATE AMOUNTS OF VERTICAL SHEAR

AND INSTABILITY WILL BE SUPPORTIVE OF BOWING AND SOME SUPERCELL

STRUCTURES WITH THE PRIMARY HAZARD BEING DAMAGING WIND GUSTS.



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 500. MEAN STORM

MOTION VECTOR 25030.





...MEAD



788 

WWUS20 KWNS 021822

SEL7

SPC WW 021822

ILZ000-MOZ000-030200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 517

NWS STORM PREDICTION CENTER NORMAN OK

125 PM CDT THU OCT 2 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHERN ILLINOIS

  EAST-CENTRAL AND SOUTHEAST MISSOURI



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 125 PM UNTIL

  900 PM CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST OF

FARMINGTON MISSOURI TO 70 MILES EAST OF SALEM ILLINOIS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 515...WW 516...



DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND

INTENSITY THIS AFTERNOON ALONG AND SOUTH OF AN OUTFLOW BOUNDARY

WHICH MAY ATTEMPT TO MOVE SLOWLY NWD ACROSS CNTRL PORTIONS OF THE

WATCH AREA. THE COMBINATION OF MODERATE AMOUNTS OF VERTICAL SHEAR

AND INSTABILITY WILL BE SUPPORTIVE OF BOWING AND SOME SUPERCELL

STRUCTURES WITH THE PRIMARY HAZARD BEING DAMAGING WIND GUSTS.



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 500. MEAN STORM

MOTION VECTOR 25030.





...MEAD

