

475 

WWUS20 KWNS 010015

SEL2

SPC WW 010015

IAZ000-MOZ000-NEZ000-010700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 482

NWS STORM PREDICTION CENTER NORMAN OK

715 PM CDT SUN AUG 31 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  CENTRAL AND SOUTHERN IOWA

  NORTHWESTERN MISSOURI

  EXTREME SOUTHEASTERN NEBRASKA



* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 715 PM

  UNTIL 200 AM CDT.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES POSSIBLE

  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH OF DES MOINES

IOWA TO 40 MILES EAST OF FALLS CITY NEBRASKA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU2).



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 479...WW 480...WW 481...



DISCUSSION...MESSY MIX OF SUPERCELLS...MULTICELLS AND QUASI-LINEAR

TSTM SEGMENTS SHOULD MOVE GENERALLY W-E ACROSS WW AREA THIS

EVENING...OFFERING SOME RISK FOR EACH SEVERE HAZARD.  RELATIVELY

MAXIMIZED TORNADO POTENTIAL...WHETHER FROM SUPERCELLS OR QLCS

CIRCULATIONS...WOULD BE OVER PORTIONS WRN/CENTRAL IA...NEAR AND N OF

OLD OUTFLOW/DIFFERENTIAL-HEATING BOUNDARY -- WHERE RELATIVELY BACKED

FLOW...RELATED HODOGRAPH ENHANCEMENT...RICH BOUNDARY-LAYER

MOISTURE...AND LOW LCL ARE EXPECTED FOR A FEW HOURS BENEATH

STRENGTHENING LLJ.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 26025.





...EDWARDS



648 

WWUS20 KWNS 010015

SEL2

SPC WW 010015

IAZ000-MOZ000-NEZ000-010700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 482

NWS STORM PREDICTION CENTER NORMAN OK

715 PM CDT SUN AUG 31 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  CENTRAL AND SOUTHERN IOWA

  NORTHWESTERN MISSOURI

  EXTREME SOUTHEASTERN NEBRASKA



* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 715 PM

  UNTIL 200 AM CDT.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES POSSIBLE

  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH OF DES MOINES

IOWA TO 40 MILES EAST OF FALLS CITY NEBRASKA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU2).



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 479...WW 480...WW 481...



DISCUSSION...MESSY MIX OF SUPERCELLS...MULTICELLS AND QUASI-LINEAR

TSTM SEGMENTS SHOULD MOVE GENERALLY W-E ACROSS WW AREA THIS

EVENING...OFFERING SOME RISK FOR EACH SEVERE HAZARD.  RELATIVELY

MAXIMIZED TORNADO POTENTIAL...WHETHER FROM SUPERCELLS OR QLCS

CIRCULATIONS...WOULD BE OVER PORTIONS WRN/CENTRAL IA...NEAR AND N OF

OLD OUTFLOW/DIFFERENTIAL-HEATING BOUNDARY -- WHERE RELATIVELY BACKED

FLOW...RELATED HODOGRAPH ENHANCEMENT...RICH BOUNDARY-LAYER

MOISTURE...AND LOW LCL ARE EXPECTED FOR A FEW HOURS BENEATH

STRENGTHENING LLJ.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 26025.





...EDWARDS

