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Severe Storm Watch Northern/Central Minnesota until 10 PM

  • Blog Post by: Paul Douglas
  • June 20, 2014 - 3:34 PM

Here We Go Again. Odds favor most of the T-storms passing north of MSP, with the best chance north of Alexandria and Little Falls, but a few stray T-storms can't be ruled as far south as the metro area. The blue-shaded area shows a Severe Storm Watch posted until 10 PM. NWS Doppler radar at 3:33 PM. Details from NOAA SPC:

THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     MUCH OF NORTHERN AND CENTRAL MINNESOTA
     FAR EASTERN NORTH DAKOTA
     EXTREME NORTHEAST SOUTH DAKOTA

   * EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 320 PM UNTIL
     1000 PM 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 NORTH AND SOUTH OF A LINE FROM 25 MILES NORTHWEST
   OF FARGO NORTH DAKOTA TO 45 MILES EAST OF BRAINERD MINNESOTA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU7).

   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...THUNDERSTORMS HAVE BEGUN TO DEVELOP NEAR AND AHEAD OF
   AN ADVANCING COOL FRONT CROSSING THE ND/MN BORDER REGION ATTM. 
   LIMITED INSTABILITY IS INDICATED AHEAD OF THE FRONT AS
   BOUNDARY-LAYER MOISTURE REMAINS SOMEWHAT LACKING.  THAT
   SAID...STRONGER FLOW ALOFT IS YIELDING SHEAR FAVORABLE FOR
   SUPERCELLS...AND WITH AT LEAST ISOLATED ADDITIONAL DEVELOPMENT
   LIKELY GIVEN STRENGTH OF FOCUSED UVV...HAIL AND LOCALLY DAMAGING
   WIND RISK SHOULD INCREASE OVER THE NEXT COUPLE OF HOURS.

   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 450. MEAN STORM
   MOTION VECTOR 27035.

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