

739 

WWUS20 KWNS 082105

SEL7

SPC WW 082105

ILZ000-INZ000-MOZ000-090300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 37

NWS STORM PREDICTION CENTER NORMAN OK

405 PM CDT WED APR 8 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHERN ILLINOIS

  SOUTHERN INDIANA

  SOUTHEAST MISSOURI



* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 405 PM

  UNTIL 1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  A COUPLE TORNADOES POSSIBLE

  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS

    TO 2.5 INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 125 STATUTE

MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH NORTHEAST OF

EVANSVILLE INDIANA TO 25 MILES SOUTHEAST OF CARBONDALE ILLINOIS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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...CONTINUE...WW 33...WW 34...WW 35...WW

36...



DISCUSSION...SUPERCELL CLUSTERS THAT HAVE FORMED IN RELATIVELY WEAK

LOW-LVL SHEAR THIS AFTN MAY POSE A THREAT FOR A COUPLE TORNADOES

THROUGH EARLY TNGT GIVEN DEGREE OF BUOYANCY AND PRESENCE OF ENHANCED

SRH INVOF W-E FRONTAL SEGMENT BISECTING MAIN AXIS OF WW.



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 26030.





...CORFIDI



438 

WWUS20 KWNS 082105

SEL7

SPC WW 082105

ILZ000-INZ000-MOZ000-090300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 37

NWS STORM PREDICTION CENTER NORMAN OK

405 PM CDT WED APR 8 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHERN ILLINOIS

  SOUTHERN INDIANA

  SOUTHEAST MISSOURI



* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 405 PM

  UNTIL 1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  A COUPLE TORNADOES POSSIBLE

  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS

    TO 2.5 INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 125 STATUTE

MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH NORTHEAST OF

EVANSVILLE INDIANA TO 25 MILES SOUTHEAST OF CARBONDALE ILLINOIS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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...CONTINUE...WW 33...WW 34...WW 35...WW

36...



DISCUSSION...SUPERCELL CLUSTERS THAT HAVE FORMED IN RELATIVELY WEAK

LOW-LVL SHEAR THIS AFTN MAY POSE A THREAT FOR A COUPLE TORNADOES

THROUGH EARLY TNGT GIVEN DEGREE OF BUOYANCY AND PRESENCE OF ENHANCED

SRH INVOF W-E FRONTAL SEGMENT BISECTING MAIN AXIS OF WW.



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 26030.





...CORFIDI

