

924 

WWUS20 KWNS 192003

SEL3

SPC WW 192003

IAZ000-ILZ000-MOZ000-200300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 183

NWS STORM PREDICTION CENTER NORMAN OK

300 PM CDT SUN MAY 19 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHERN IOWA

  NORTHWESTERN ILLINOIS

  NORTHEAST MISSOURI



* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 300 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTH NORTHWEST OF

SHENANDOAH IOWA TO 40 MILES NORTH OF BURLINGTON IOWA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU3).



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 179...WW 180...WW

181...WW 182...



DISCUSSION...STORM DEVELOPMENT CONTINUES SOUTHWARD TOWARD THE

MISSOURI BORDER...ALONG A WIND SHIFT ASSOCIATED WITH THE

CONVECTIVELY GENERATED CYCLONIC VORTICITY CENTER MIGRATING NORTHWARD

THROUGH THE UPPER MISSISSIPPI VALLEY.  ADDITIONAL STORMS CONTINUE TO

DEVELOP AND INTENSIFY...WHILE SPREADING NORTHEASTWARD ACROSS THE

MIDDLE MISSOURI VALLEY...IN THE EXIT REGION OF THE NEXT MID-LEVEL

JET STRONG NOSING THROUGH THE CENTRAL PLAINS.  STRONGEST STORMS MAY

INCLUDE A FEW SUPERCELLS ACROSS THE WATCH AREA INTO EARLY

EVENING...WITH A RISK FOR LARGE HAIL...LOCALLY DAMAGING WIND GUSTS

AND POTENTIAL FOR TORNADOES.



AVIATION...TORNADOES AND 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 24035.





...KERR

