

252 

WWUS20 KWNS 222047

SEL9

SPC WW 222047

IAZ000-KSZ000-MOZ000-NEZ000-230500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 499

NWS STORM PREDICTION CENTER NORMAN OK

340 PM CDT SAT AUG 22 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHERN AND WESTERN IOWA

  NORTHERN AND EASTERN KANSAS

  WESTERN AND NORTHERN MISSOURI

  SOUTHERN AND EASTERN NEBRASKA



* EFFECTIVE THIS SATURDAY AFTERNOON FROM 340 PM UNTIL MIDNIGHT

  CDT.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE

  WIDESPREAD DAMAGING WINDS EXPECTED WITH ISOLATED SIGNIFICANT

    GUSTS TO 80 MPH POSSIBLE

  WIDESPREAD LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL

    EVENTS TO 2.5 INCHES IN DIAMETER POSSIBLE



SUMMARY...THUNDERSTORMS...INCLUDING A FEW LONGER-LIVED

SUPERCELLS...EXPECTED TO FORM OVER EASTERN NEB AND WESTERN IA OVER

THE NEXT FEW HOURS. THESE STORMS MAY PRODUCE A FEW TORNADOES...IN

ADDITION TO VERY LARGE HAIL AND LOCALLY DAMAGING WIND...AS THEY

MOVE/DEVELOP GENERALLY EASTWARD. THE STORMS LIKELY WILL BE JOINED BY

ADDITIONAL ACTIVITY FORMING SOUTHWARD INTO PARTS OF NORTHERN KS AND

NW MO A BIT LATER THIS EVENING. THE STORMS LIKELY WILL MERGE INTO

ONE OR TWO LARGE CLUSTERS. THESE COULD BE ACCOMPANIED BY A

CONTINUING RISK FOR SEVERE WIND...HAIL...AND ISOLATED TORNADOES AS

THEY MOVE GENERALLY S OR SE ACROSS NE KS...NW MO...AND SRN IA

THROUGH LATE TONIGHT.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 120 STATUTE

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

DENISON IOWA TO 30 MILES SOUTHWEST OF MANHATTAN KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU9).



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 497...WW 498...



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

600. MEAN STORM MOTION VECTOR 29025.





...CORFIDI

