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Severe Thunderstorm Watch 490
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WW0490 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Moderate Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL0

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 490
   NWS STORM PREDICTION CENTER NORMAN OK
   705 PM CDT WED SEP 3 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     NORTHEAST MONTANA
     WESTERN AND CENTRAL NORTH DAKOTA

   * EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 705 PM
     UNTIL 200 AM CDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5
       INCHES IN DIAMETER POSSIBLE
     ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES NORTHWEST
   OF SIDNEY MONTANA TO 70 MILES EAST SOUTHEAST OF MINOT NORTH
   DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
   WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

   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 ARE EXPECTED TO INCREASE IN COVERAGE AND
   INTENSITY THIS EVENING INTO TONIGHT AHEAD OF A COLD FRONT AND
   ASSOCIATED SHORT-WAVE TROUGH PROGRESSING FROM WEST TO EAST ACROSS
   THE WATCH AREA. STRONG VERTICAL SHEAR COUPLED WITH STEEP MID-LEVEL
   LAPSE RATES AND INCREASING LOW-LEVEL MOISTURE WILL BE SUPPORTIVE OF
   SUPERCELL AND BOWING STRUCTURES CAPABLE OF LARGE HAIL...DAMAGING
   WINDS...AND PERHAPS A BRIEF TORNADO OR TWO.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 27030.


   ...MEAD
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Page last modified: September 04, 2014
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