Storm Prediction Center Severe Thunderstorm Watch 252

Hazard	Tornadoes	EF2+ Tornadoes
Likelihood	Low	Very Low

Severe Wind	65 kt+ Wind
Moderate	Moderate

Severe Hail	2"+ Hail
High	High

Note: The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.

   SEL2

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 252
   NWS Storm Prediction Center Norman OK
   225 PM MDT Thu Jun 4 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Far southeast Montana
     Western and central South Dakota
     Far northeast Wyoming

   * Effective this Thursday afternoon and evening from 225 PM until
     1000 PM MDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 3
       inches in diameter likely
     Scattered damaging winds and isolated significant gusts to 75
       mph possible
     A tornado or two possible

   SUMMARY...Multiple supercells should develop near the South Dakota,
   Montana, Wyoming border area and spread east-southeast into central
   South Dakota this evening. A couple of these supercells may be
   long-tracked with potential for elongated swaths of large hail. A
   tornado or two is also possible, mainly across western into
   south-central South Dakota.

   The severe thunderstorm watch area is approximately along and 65
   statute miles north and south of a line from 90 miles west of
   Buffalo SD to 50 miles south southeast of Pierre SD. For a complete
   depiction of the watch see the associated watch outline update
   (WOUS64 KWNS WOU2).

   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 249...WW 250...WW 251...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   3 inches. Extreme turbulence and surface wind gusts to 65 knots. A
   few cumulonimbi with maximum tops to 500. Mean storm motion vector
   29040.

   ...Grams

Hazard	Tornadoes	EF2+ Tornadoes
Likelihood	Low	Very Low

Severe Wind	65 kt+ Wind
Moderate	Moderate

Severe Hail	2"+ Hail
High	High

   SEL2

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 252
   NWS Storm Prediction Center Norman OK
   225 PM MDT Thu Jun 4 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Far southeast Montana
     Western and central South Dakota
     Far northeast Wyoming

   * Effective this Thursday afternoon and evening from 225 PM until
     1000 PM MDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 3
       inches in diameter likely
     Scattered damaging winds and isolated significant gusts to 75
       mph possible
     A tornado or two possible

   SUMMARY...Multiple supercells should develop near the South Dakota,
   Montana, Wyoming border area and spread east-southeast into central
   South Dakota this evening. A couple of these supercells may be
   long-tracked with potential for elongated swaths of large hail. A
   tornado or two is also possible, mainly across western into
   south-central South Dakota.

   The severe thunderstorm watch area is approximately along and 65
   statute miles north and south of a line from 90 miles west of
   Buffalo SD to 50 miles south southeast of Pierre SD. For a complete
   depiction of the watch see the associated watch outline update
   (WOUS64 KWNS WOU2).

   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 249...WW 250...WW 251...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   3 inches. Extreme turbulence and surface wind gusts to 65 knots. A
   few cumulonimbi with maximum tops to 500. Mean storm motion vector
   29040.

   ...Grams

Hazard	Tornadoes	EF2+ Tornadoes
Likelihood	Low	Very Low

Severe Wind	65 kt+ Wind
Moderate	Moderate

Severe Hail	2"+ Hail
High	High

Note: Click for Watch Status Reports.

   WOUS64 KWNS 042024
   WOU2

   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 252
   NWS STORM PREDICTION CENTER NORMAN OK
   225 PM MDT THU JUN 4 2020

   SEVERE THUNDERSTORM WATCH 252 IS IN EFFECT UNTIL 1000 PM MDT
   FOR THE FOLLOWING LOCATIONS

   MTC011-075-050400-
   /O.NEW.KWNS.SV.A.0252.200604T2025Z-200605T0400Z/

   MT 
   .    MONTANA COUNTIES INCLUDED ARE

   CARTER               POWDER RIVER        


   SDC007-019-033-041-055-063-065-071-075-081-085-093-095-102-103-
   105-117-119-121-123-137-050400-
   /O.NEW.KWNS.SV.A.0252.200604T2025Z-200605T0400Z/

   SD 
   .    SOUTH DAKOTA COUNTIES INCLUDED ARE

   BENNETT              BUTTE               CUSTER              
   DEWEY                HAAKON              HARDING             
   HUGHES               JACKSON             JONES               
   LAWRENCE             LYMAN               MEADE               
   MELLETTE             OGLALA LAKOTA       PENNINGTON          
   PERKINS              STANLEY             SULLY               
   TODD                 TRIPP               ZIEBACH             


   WYC011-050400-
   /O.NEW.KWNS.SV.A.0252.200604T2025Z-200605T0400Z/

   WY 
   .    WYOMING COUNTIES INCLUDED ARE

   CROOK                


   ATTN...WFO...BYZ...UNR...ABR...

Hazard	Tornadoes	EF2+ Tornadoes
Likelihood	Low	Very Low

Severe Wind	65 kt+ Wind
Moderate	Moderate

Severe Hail	2"+ Hail
High	High

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

   SAW2 
   WW 252 SEVERE TSTM MT SD WY 042025Z - 050400Z
   AXIS..65 STATUTE MILES NORTH AND SOUTH OF LINE..
   90W 2WX/BUFFALO SD/ - 50SSE PIR/PIERRE SD/
   ..AVIATION COORDS.. 55NM N/S /55SSE MLS - 43SSE PIR/
   HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..65 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 29040.

   LAT...LON 46500538 44659990 42779990 44610538

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU2.

Watch 252 Status Report Messages:

STATUS REPORT #4 ON WW 252

VALID 050150Z - 050240Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 E GCC TO
55 WNW RAP TO 40 NW PHP TO 30 W 9V9.

..SPC..06/05/20

ATTN...WFO...BYZ...UNR...ABR...

&&

STATUS REPORT FOR WS 252 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

SDC007-033-055-071-075-081-085-093-095-102-103-121-123-050240-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BENNETT 	     CUSTER		 HAAKON 	     
JACKSON 	     JONES		 LAWRENCE	     
LYMAN		     MEADE		 MELLETTE	     
OGLALA LAKOTA	     PENNINGTON 	 TODD		     
TRIPP		     
$$


WYC011-050240-

WY 
.    WYOMING COUNTIES INCLUDED ARE

CROOK		     
$$


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 252

VALID 050030Z - 050140Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 S 4BQ TO
50 SSE 2WX TO 45 N PHP TO 45 SSW MBG.

..SPC..06/05/20

ATTN...WFO...BYZ...UNR...ABR...

&&

STATUS REPORT FOR WS 252 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

SDC007-019-033-055-065-071-075-081-085-093-095-102-103-117-119-
121-123-050140-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BENNETT 	     BUTTE		 CUSTER 	     
HAAKON		     HUGHES		 JACKSON	     
JONES		     LAWRENCE		 LYMAN		     
MEADE		     MELLETTE		 OGLALA LAKOTA	     
PENNINGTON	     STANLEY		 SULLY		     
TODD		     TRIPP		 
$$


WYC011-050140-

WY 
.    WYOMING COUNTIES INCLUDED ARE

CROOK		     
$$


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 252

VALID 042330Z - 050040Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..SPC..06/04/20

ATTN...WFO...BYZ...UNR...ABR...

&&

STATUS REPORT FOR WS 252 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MTC011-075-050040-

MT 
.    MONTANA COUNTIES INCLUDED ARE

CARTER		     POWDER RIVER	 
$$


SDC007-019-033-041-055-063-065-071-075-081-085-093-095-102-103-
105-117-119-121-123-137-050040-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BENNETT 	     BUTTE		 CUSTER 	     
DEWEY		     HAAKON		 HARDING	     
HUGHES		     JACKSON		 JONES		     
LAWRENCE	     LYMAN		 MEADE		     
MELLETTE	     OGLALA LAKOTA	 PENNINGTON	     
PERKINS 	     STANLEY		 SULLY		     
TODD		     TRIPP		 ZIEBACH	     
$$


WYC011-050040-

WY 
.    WYOMING COUNTIES INCLUDED ARE

CROOK		     
$$


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 252

VALID 042230Z - 042340Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..SPC..06/04/20

ATTN...WFO...BYZ...UNR...ABR...

&&

STATUS REPORT FOR WS 252 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MTC011-075-042340-

MT 
.    MONTANA COUNTIES INCLUDED ARE

CARTER		     POWDER RIVER	 
$$


SDC007-019-033-041-055-063-065-071-075-081-085-093-095-102-103-
105-117-119-121-123-137-042340-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BENNETT 	     BUTTE		 CUSTER 	     
DEWEY		     HAAKON		 HARDING	     
HUGHES		     JACKSON		 JONES		     
LAWRENCE	     LYMAN		 MEADE		     
MELLETTE	     OGLALA LAKOTA	 PENNINGTON	     
PERKINS 	     STANLEY		 SULLY		     
TODD		     TRIPP		 ZIEBACH	     
$$


WYC011-042340-

WY 
.    WYOMING COUNTIES INCLUDED ARE

CROOK		     
$$


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.
$$

Hazard	Tornadoes	EF2+ Tornadoes
Likelihood	Low	Very Low

Severe Wind	65 kt+ Wind
Moderate	Moderate

Severe Hail	2"+ Hail
High	High

Note: Click for Complete Product Text.
Tornadoes

Probability of 2 or more tornadoes	Low (20%)
Probability of 1 or more strong (EF2-EF5) tornadoes	Low (5%)

Wind

Probability of 10 or more severe wind events	Mod (40%)
Probability of 1 or more wind events > 65 knots	Mod (30%)

Hail

Probability of 10 or more severe hail events	High (70%)
Probability of 1 or more hailstones > 2 inches	High (70%)

Combined Severe Hail/Wind

Probability of 6 or more combined severe hail/wind events

High (90%)

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.