Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Severe Thunderstorm Watch 466
< Previous WW         Next WW >
  | | | | | |  
WW0466 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Very Low
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL6

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 466
   NWS STORM PREDICTION CENTER NORMAN OK
   745 PM CDT MON AUG 18 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     NORTHERN AND EASTERN IOWA
     SOUTHEASTERN MINNESOTA
     WESTERN AND SOUTHERN WISCONSIN

   * EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 745 PM
     UNTIL 200 AM 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 115
   STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH
   NORTHWEST OF LA CROSSE WISCONSIN TO 30 MILES WEST SOUTHWEST OF
   WATERLOO IOWA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).

   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.

   &&

   DISCUSSION...TSTMS EXPECTED TO PERSIST AND POSSIBLE INCREASE THROUGH
   LATE EVE AHEAD OF SHORTWAVE TROUGH PIVOTING SE ACROSS REGION IN
   CYCLONIC WNWLY MID/UPR LVL FLOW /REF MCD 1577/. STORMS MAY FOCUS IN
   TWO AREAS.../1/ ALONG/AHEAD OF WEAK COLD FRONT NOW ENTERING SW MN
   AND FAR NW IA...AND /2/ ALONG SW-NE LOW-LVL CONFLUENCE AXIS OVER NE
   IA/SW WI. AMPLE DEEP WNWLY SHEAR WILL BE PRESENT FOR STORM
   ORGANIZATION AND SUSTENANCE...AND A CONDITIONAL RISK FOR SVR
   HAIL/WIND...GIVEN SUFFICIENT LOW-LVL CONVERGENCE TO FORCE PARCELS TO
   THEIR FCS.

   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 28030.


   ...CORFIDI
Top of Page/Status Messages for this watch/All Current Watches/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: August 19, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities