SEL7

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 447
   NWS Storm Prediction Center Norman OK
   250 PM MDT Fri Jun 20 2025

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southeast Montana
     Southwest North Dakota
     Northwest South Dakota

   * Effective this Friday afternoon and evening from 250 PM until
     900 PM MDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 3
       inches in diameter likely
     Scattered damaging wind gusts to 70 mph likely
     A tornado or two possible

   SUMMARY...Thunderstorms are expected to rapidly develop this
   afternoon over southeast Montana and track eastward through the
   early evening.  Supercells capable of very large hail and damaging
   winds appear to be the main concern.  A tornado or two is also
   possible.

   The severe thunderstorm watch area is approximately along and 60
   statute miles north and south of a line from 40 miles north
   northwest of Broadus MT to 85 miles northeast of Lemmon SD. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU7).

   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
   3 inches. Extreme turbulence and surface wind gusts to 60 knots. A
   few cumulonimbi with maximum tops to 500. Mean storm motion vector
   26030.

   ...Hart

   SEL7

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 447
   NWS Storm Prediction Center Norman OK
   250 PM MDT Fri Jun 20 2025

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southeast Montana
     Southwest North Dakota
     Northwest South Dakota

   * Effective this Friday afternoon and evening from 250 PM until
     900 PM MDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 3
       inches in diameter likely
     Scattered damaging wind gusts to 70 mph likely
     A tornado or two possible

   SUMMARY...Thunderstorms are expected to rapidly develop this
   afternoon over southeast Montana and track eastward through the
   early evening.  Supercells capable of very large hail and damaging
   winds appear to be the main concern.  A tornado or two is also
   possible.

   The severe thunderstorm watch area is approximately along and 60
   statute miles north and south of a line from 40 miles north
   northwest of Broadus MT to 85 miles northeast of Lemmon SD. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU7).

   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
   3 inches. Extreme turbulence and surface wind gusts to 60 knots. A
   few cumulonimbi with maximum tops to 500. Mean storm motion vector
   26030.

   ...Hart

   WOUS64 KWNS 202044
   WOU7

   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 447
   NWS STORM PREDICTION CENTER NORMAN OK
   250 PM MDT FRI JUN 20 2025

   SEVERE THUNDERSTORM WATCH 447 IS IN EFFECT UNTIL 900 PM MDT
   FOR THE FOLLOWING LOCATIONS

   MTC011-017-021-025-079-109-210300-
   /O.NEW.KWNS.SV.A.0447.250620T2050Z-250621T0300Z/

   MT 
   .    MONTANA COUNTIES INCLUDED ARE

   CARTER               CUSTER              DAWSON              
   FALLON               PRAIRIE             WIBAUX              


   NDC001-007-011-025-033-037-041-057-059-065-085-087-089-210300-
   /O.NEW.KWNS.SV.A.0447.250620T2050Z-250621T0300Z/

   ND 
   .    NORTH DAKOTA COUNTIES INCLUDED ARE

   ADAMS                BILLINGS            BOWMAN              
   DUNN                 GOLDEN VALLEY       GRANT               
   HETTINGER            MERCER              MORTON              
   OLIVER               SIOUX               SLOPE               
   STARK                


   SDC031-063-105-210300-
   /O.NEW.KWNS.SV.A.0447.250620T2050Z-250621T0300Z/

   SD 
   .    SOUTH DAKOTA COUNTIES INCLUDED ARE

   CORSON               HARDING             PERKINS             


   ATTN...WFO...BYZ...UNR...ABR...BIS...GGW...

   SAW7 
   WW 447 SEVERE TSTM MT ND SD 202050Z - 210300Z
   AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
   40NNW 4BQ/BROADUS MT/ - 85NE Y22/LEMMON SD/
   ..AVIATION COORDS.. 50NM N/S /27SSE MLS - 10W BIS/
   HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 26030.

   LAT...LON 46830572 47660090 45920090 45100572

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU7.

Watch 447 Status Report Messages:

STATUS REPORT #4 ON WW 447

VALID 210245Z - 210300Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 E Y22 TO
25 SW BIS TO 15 W N60.

WW 447 WILL BE ALLOWED TO EXPIRE AT 210300Z.

..SQUITIERI..06/21/25

ATTN...WFO...BYZ...GGW...BIS...ABR...UNR...

&&

STATUS REPORT FOR WS 447 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

NDC059-065-085-210300-

ND 
.    NORTH DAKOTA COUNTIES INCLUDED ARE

MORTON		     OLIVER		 SIOUX		     
$$


SDC031-210300-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

CORSON		     
$$


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.
$$

STATUS REPORT #3 ON WW 447

VALID 210145Z - 210240Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 N RAP TO
30 N Y22 TO 40 WNW N60.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1387

..MOORE..06/21/25

ATTN...WFO...BYZ...GGW...BIS...ABR...UNR...

&&

STATUS REPORT FOR WS 447 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

NDC037-057-059-065-085-210240-

ND 
.    NORTH DAKOTA COUNTIES INCLUDED ARE

GRANT		     MERCER		 MORTON 	     
OLIVER		     SIOUX		 
$$


SDC031-105-210240-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

CORSON		     PERKINS		 
$$


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.
$$

STATUS REPORT #2 ON WW 447

VALID 210050Z - 210140Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SSE 2WX
TO 35 NNE 2WX TO 45 N DIK.

..SQUITIERI..06/21/25

ATTN...WFO...BYZ...GGW...BIS...ABR...UNR...

&&

STATUS REPORT FOR WS 447 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

NDC001-025-037-041-057-059-065-085-089-210140-

ND 
.    NORTH DAKOTA COUNTIES INCLUDED ARE

ADAMS		     DUNN		 GRANT		     
HETTINGER	     MERCER		 MORTON 	     
OLIVER		     SIOUX		 STARK		     
$$


SDC031-063-105-210140-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

CORSON		     HARDING		 PERKINS	     
$$


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.
$$

STATUS REPORT #1 ON WW 447

VALID 202320Z - 210040Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 ESE 4BQ
TO 25 WSW BHK TO 20 E GDV.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1384

..SQUITIERI..06/20/25

ATTN...WFO...BYZ...GGW...BIS...ABR...UNR...

&&

STATUS REPORT FOR WS 447 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MTC011-025-109-210040-

MT 
.    MONTANA COUNTIES INCLUDED ARE

CARTER		     FALLON		 WIBAUX 	     
$$


NDC001-007-011-025-033-037-041-057-059-065-085-087-089-210040-

ND 
.    NORTH DAKOTA COUNTIES INCLUDED ARE

ADAMS		     BILLINGS		 BOWMAN 	     
DUNN		     GOLDEN VALLEY	 GRANT		     
HETTINGER	     MERCER		 MORTON 	     
OLIVER		     SIOUX		 SLOPE		     
STARK		     
$$


SDC031-063-105-210040-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

CORSON		     HARDING		 PERKINS	     
$$


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.
$$

Please visit the National Weather Service NWS Public Alerts for more information on the warnings.

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.