Storm Prediction Center Severe Thunderstorm Watch 624

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The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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   SEL4

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 624
   NWS Storm Prediction Center Norman OK
   545 PM CDT Mon Aug 24 2026

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Central South Dakota

   * Effective this Monday afternoon and evening from 545 PM until
     1100 PM CDT.

   * Primary threats include...
     Isolated significant damaging wind gusts to 75 mph possible
     Isolated very large hail events to 2 inches in diameter possible

   SUMMARY...A few supercells will be possible through late evening
   with the potential for isolated very large hail near 2 inches in
   diameter and isolated severe outflow gusts of 60-75 mph.

   The severe thunderstorm watch area is approximately along and 50
   statute miles east and west of a line from 40 miles northeast of
   Mobridge SD to 45 miles south of Pierre SD. For a complete depiction
   of the watch see the associated watch outline update (WOUS64 KWNS
   WOU4).

   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 622...WW 623...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   31020.

   ...Thompson

Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.

   SAW4 
   WW 624 SEVERE TSTM SD 242245Z - 250400Z
   AXIS..50 STATUTE MILES EAST AND WEST OF LINE..
   40NE MBG/MOBRIDGE SD/ - 45S PIR/PIERRE SD/
   ..AVIATION COORDS.. 45NM E/W /61SE BIS - 41S PIR/
   HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..65 KNOTS.
   MAX TOPS TO 550. MEAN STORM MOTION VECTOR 31020.

   LAT...LON 45939880 43729928 43720128 45930088

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU4.

Watch 624 Status Report Message has not been issued yet.

Note:
 Click for Complete Product Text.

Tornadoes

Wind

Hail

Combined Severe Hail/Wind

For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The “Low” category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
“Moderate” from 30% to 60%, and “High” from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.