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Severe Thunderstorm Watch 221
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WW0221 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
High 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.
   SEL1

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 221
   NWS STORM PREDICTION CENTER NORMAN OK
   515 PM MDT WED JUN 4 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     EASTERN COLORADO
     NORTHWEST KANSAS
     WESTERN NEBRASKA
     WESTERN SOUTH DAKOTA

   * EFFECTIVE THIS WEDNESDAY AFTERNOON AND THURSDAY MORNING FROM
     515 PM UNTIL 100 AM MDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
       TO 2 INCHES IN DIAMETER POSSIBLE
     SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
   STATUTE MILES EAST AND WEST OF A LINE FROM 90 MILES NORTH
   NORTHEAST OF RAPID CITY SOUTH DAKOTA TO 50 MILES SOUTH SOUTHWEST
   OF BURLINGTON COLORADO.  FOR A COMPLETE DEPICTION OF THE WATCH
   SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).

   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 218...WW 219...WW 220...

   DISCUSSION...SCTD AREAS OF TSTMS...INCLUDING CLUSTERS OF SUSTAINED
   STORMS AND A FEW SUPERCELLS WITH LARGE HAIL/DMGG WIND AND POSSIBLY A
   TORNADO...EXPECTED TO PERSIST/POSSIBLY INCREASE IN WW AREA THROUGH
   LATE TNGT. THE ACTIVITY WILL BE PROMOTED BY UPSLOPE COMPONENT TO
   FAIRLY MOIST LOW-LVL FLOW. STORMS MAY EVOLVE INTO A COUPLE SIZABLE
   MCSS...WITH FORWARD-PROPAGATING/ESE-MOVING SEGMENTS CAPABLE OF SVR
   WIND/HAIL.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 30025.


   ...CORFIDI
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Page last modified: June 05, 2014
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