Storm Prediction Center Severe Thunderstorm Watch 246

Note: 
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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   SEL6

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 246
   NWS Storm Prediction Center Norman OK
   425 PM MDT Sun May 11 2025

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southeast Montana
     Western North Dakota
     North Central Wyoming

   * Effective this Sunday afternoon and evening from 425 PM until
     1100 PM MDT.

   * Primary threats include...
     Scattered damaging winds and isolated significant gusts to 75
       mph possible

   SUMMARY...A cluster of thunderstorms over southeast Montana will
   track across the watch area through the evening.  Conditions are
   favorable for organized, high-based convection capable of damaging
   wind gusts.

   The severe thunderstorm watch area is approximately along and 70
   statute miles north and south of a line from 120 miles west
   southwest of Miles City MT to 35 miles east northeast of Dickinson
   ND. For a complete depiction of the watch see the associated watch
   outline update (WOUS64 KWNS WOU6).

   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 245...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   0.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
   few cumulonimbi with maximum tops to 500. Mean storm motion vector
   25030.

   ...Hart

   SEL6

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 246
   NWS Storm Prediction Center Norman OK
   425 PM MDT Sun May 11 2025

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southeast Montana
     Western North Dakota
     North Central Wyoming

   * Effective this Sunday afternoon and evening from 425 PM until
     1100 PM MDT.

   * Primary threats include...
     Scattered damaging winds and isolated significant gusts to 75
       mph possible

   SUMMARY...A cluster of thunderstorms over southeast Montana will
   track across the watch area through the evening.  Conditions are
   favorable for organized, high-based convection capable of damaging
   wind gusts.

   The severe thunderstorm watch area is approximately along and 70
   statute miles north and south of a line from 120 miles west
   southwest of Miles City MT to 35 miles east northeast of Dickinson
   ND. For a complete depiction of the watch see the associated watch
   outline update (WOUS64 KWNS WOU6).

   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 245...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   0.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
   few cumulonimbi with maximum tops to 500. Mean storm motion vector
   25030.

   ...Hart

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

   SAW6 
   WW 246 SEVERE TSTM MT ND WY 112225Z - 120500Z
   AXIS..70 STATUTE MILES NORTH AND SOUTH OF LINE..
   120WSW MLS/MILES CITY MT/ - 35ENE DIK/DICKINSON ND/
   ..AVIATION COORDS.. 60NM N/S /19ESE BIL - 28ENE DIK/
   HAIL SURFACE AND ALOFT..0.5 INCH. WIND GUSTS..65 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25030.

   LAT...LON 46760818 48000211 45980211 44730818

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU6.

Watch 246 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.