Storm Prediction Center Severe Thunderstorm Watch 410

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 410
   NWS Storm Prediction Center Norman OK
   255 PM MDT Thu Jun 12 2025

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Northeast Colorado
     Western and Northern Nebraska
     Southern South Dakota
     Southeast Wyoming

   * Effective this Thursday afternoon and evening from 255 PM until
     1100 PM MDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 2.5
       inches in diameter possible
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...Severe thunderstorms are expected to continue to develop
   regionally mainly near a southwest/northeast-oriented front, with an
   unstable air mass and moderately strong wind profiles supporting
   supercells and hail/wind potential, and possibly even a brief
   tornado.

   The severe thunderstorm watch area is approximately along and 75
   statute miles north and south of a line from 40 miles east southeast
   of Chamberlain SD to 75 miles south southwest of Torrington WY. 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.

   &&

   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 550. Mean storm motion vector
   26025.

   ...Guyer

   SEL0

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 410
   NWS Storm Prediction Center Norman OK
   255 PM MDT Thu Jun 12 2025

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Northeast Colorado
     Western and Northern Nebraska
     Southern South Dakota
     Southeast Wyoming

   * Effective this Thursday afternoon and evening from 255 PM until
     1100 PM MDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 2.5
       inches in diameter possible
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...Severe thunderstorms are expected to continue to develop
   regionally mainly near a southwest/northeast-oriented front, with an
   unstable air mass and moderately strong wind profiles supporting
   supercells and hail/wind potential, and possibly even a brief
   tornado.

   The severe thunderstorm watch area is approximately along and 75
   statute miles north and south of a line from 40 miles east southeast
   of Chamberlain SD to 75 miles south southwest of Torrington WY. 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.

   &&

   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 550. Mean storm motion vector
   26025.

   ...Guyer

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

   SAW0 
   WW 410 SEVERE TSTM CO NE SD WY 122055Z - 130500Z
   AXIS..75 STATUTE MILES NORTH AND SOUTH OF LINE..
   40ESE 9V9/CHAMBERLAIN SD/ - 75SSW TOR/TORRINGTON WY/
   ..AVIATION COORDS.. 65NM N/S /65N ONL - 10SSE CYS/
   HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 550. MEAN STORM MOTION VECTOR 26025.

   LAT...LON 42469858 39970470 42140470 44639858

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU0.

Watch 410 Status Report Messages:

STATUS REPORT #1 ON WW 410

VALID 122125Z - 122240Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..DEAN..06/12/25

ATTN...WFO...BOU...LBF...CYS...FSD...ABR...UNR...

&&

STATUS REPORT FOR WS 410 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

COC075-087-095-115-123-122240-

CO 
.    COLORADO COUNTIES INCLUDED ARE

LOGAN		     MORGAN		 PHILLIPS	     
SEDGWICK	     WELD		 
$$


NEC005-007-013-017-029-031-033-045-049-069-075-091-101-103-105-
117-123-135-157-161-165-171-122240-

NE 
.    NEBRASKA COUNTIES INCLUDED ARE

ARTHUR		     BANNER		 BOX BUTTE	     
BROWN		     CHASE		 CHERRY 	     
CHEYENNE	     DAWES		 DEUEL		     
GARDEN		     GRANT		 HOOKER 	     
KEITH		     KEYA PAHA		 KIMBALL	     
MCPHERSON	     MORRILL		 PERKINS	     
SCOTTS BLUFF	     SHERIDAN		 SIOUX		     
THOMAS		     
$$


SDC003-015-017-023-053-073-085-095-121-123-122240-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

AURORA		     BRULE		 BUFFALO	     
CHARLES MIX	     GREGORY		 JERAULD	     
LYMAN		     MELLETTE		 TODD		     
TRIPP		     
$$


WYC015-021-122240-

WY 
.    WYOMING COUNTIES INCLUDED ARE

GOSHEN		     LARAMIE		 
$$


THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$