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Severe Thunderstorm Watch 440
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WW0440 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 440
   NWS Storm Prediction Center Norman OK
   455 PM CDT Thu Jun 20 2024

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Northern Nebraska
     Extreme southern South Dakota

   * Effective this Thursday afternoon from 455 PM until Midnight
     CDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 3.5
       inches in diameter possible
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...An isolated supercell should persist along a warm front
   over the northern Sandhills, offering all severe hazards, including
   a localized tornado threat.  In the broader picture, a clustering of
   severe thunderstorms in the Nebraska Panhandle should move into and
   across the watch later this evening, posing mainly a hail and
   severe-wind threat.  Isolate severe hail also is possible with later
   development north of the front.

   The severe thunderstorm watch area is approximately along and 55
   statute miles north and south of a line from 50 miles west of Mullen
   NE to 15 miles east northeast of Oneill NE. 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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 438...WW 439...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   3.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   26025.

   ...Edwards
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