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 428
< Previous WW         Next WW >
  | | | | | |  
WW0428 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Low 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.
   SEL8

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 428
   NWS STORM PREDICTION CENTER NORMAN OK
   920 PM CDT MON JUL 21 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     THE NORTHERN HALF OF MINNESOTA
     EXTREME NORTHWEST WISCONSIN
     LAKE SUPERIOR

   * EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 920 PM
     UNTIL 400 AM CDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
       TO 75 MPH POSSIBLE
     ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105
   STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTHWEST OF
   ELY MINNESOTA TO 40 MILES EAST SOUTHEAST OF ALEXANDRIA MINNESOTA.
    FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU8).

   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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 427...

   DISCUSSION...WELL-DEVELOPED MCS WITH BOW/COMMA HEAD STRUCTURE WILL
   CONTINUE EWD/ENEWD INTO NRN MN...ALONG A SLOW-MOVING FRONT. 
   SHORT-LIVED CIRCULATIONS WILL BE POSSIBLE IN THE NEXT COUPLE HOURS
   WHERE THE BOW INTERSECTS THE FRONT...AND AN ISOLATED TORNADO OR TWO
   MAY OCCUR.  HOWEVER...DAMAGING GUSTS WITH THE BOWING SEGMENTS WILL
   CONTINUE TO BE THE PRIMARY SEVERE STORM THREAT.  THOUGH THE MCS IS
   NOW PASSING THE CORRIDOR OF GREATEST INSTABILITY...LOW 70S BOUNDARY
   LAYER DEWPOINTS WILL SUPPORT SUBSTANTIAL CAPE ACROSS MN WELL INTO
   THE OVERNIGHT HOURS.  EXPECT THE SRN PORTION OF THE LINE TO MOVE
   GENERALLY EWD WITH A RISK FOR AT LEAST ISOLATED DAMAGING WINDS/HAIL.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 27040.


   ...THOMPSON
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: July 22, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities