SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 811
   NWS STORM PREDICTION CENTER NORMAN OK
   500 PM MDT TUE AUG 5 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHEASTERN MONTANA
          WESTERN SOUTH DAKOTA
          NORTHEASTERN WYOMING
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 500 PM UNTIL
   1100 PM MDT.
   
   HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
   STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES EAST
   NORTHEAST OF MILES CITY MONTANA TO 80 MILES SOUTH SOUTHWEST OF
   RAPID CITY SOUTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH
   SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
   
   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 810...
   
   DISCUSSION...COMBINATION OF SHORTWAVE TROUGH MOVING INTO CENTRAL MT
   AND UPSLOPE FLOW HAVE CONTRIBUTED TO THUNDERSTORMS TO RECENTLY
   DEVELOP OVER SERN MT. THESE STORMS ARE EXPECTED TO TRACK SEWD ALONG
   A WEAK BOUNDARY THAT EXTENDED FROM SERN MT TO NEAR RAPID CITY...SD.
   MODERATE INSTABILITY AND EFFECTIVE SHEAR AT 50 KT WILL BE FAVORABLE
   FOR SUPERCELLS...WITH LARGE HAIL AND SOME WIND DAMAGE LIKELY THROUGH
   THE EVENING HOURS.
   
   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 32020.
   
   
   ...IMY

   SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 811
   NWS STORM PREDICTION CENTER NORMAN OK
   500 PM MDT TUE AUG 5 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHEASTERN MONTANA
          WESTERN SOUTH DAKOTA
          NORTHEASTERN WYOMING
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 500 PM UNTIL
   1100 PM MDT.
   
   HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
   STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES EAST
   NORTHEAST OF MILES CITY MONTANA TO 80 MILES SOUTH SOUTHWEST OF
   RAPID CITY SOUTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH
   SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
   
   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 810...
   
   DISCUSSION...COMBINATION OF SHORTWAVE TROUGH MOVING INTO CENTRAL MT
   AND UPSLOPE FLOW HAVE CONTRIBUTED TO THUNDERSTORMS TO RECENTLY
   DEVELOP OVER SERN MT. THESE STORMS ARE EXPECTED TO TRACK SEWD ALONG
   A WEAK BOUNDARY THAT EXTENDED FROM SERN MT TO NEAR RAPID CITY...SD.
   MODERATE INSTABILITY AND EFFECTIVE SHEAR AT 50 KT WILL BE FAVORABLE
   FOR SUPERCELLS...WITH LARGE HAIL AND SOME WIND DAMAGE LIKELY THROUGH
   THE EVENING HOURS.
   
   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 32020.
   
   
   ...IMY

   WOUS64 KWNS 052256
   WOU1
   
   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 811
   NWS STORM PREDICTION CENTER NORMAN OK
   500 PM MDT TUE AUG 5 2008
   
   SEVERE THUNDERSTORM WATCH 811 IS IN EFFECT UNTIL 1100 PM MDT
   FOR THE FOLLOWING LOCATIONS
   
   MTC011-017-025-075-087-060500-
   /O.NEW.KWNS.SV.A.0811.080805T2300Z-080806T0500Z/
   
   MT 
   .    MONTANA COUNTIES INCLUDED ARE
   
   CARTER               CUSTER              FALLON              
   POWDER RIVER         ROSEBUD             
   
   
   SDC019-033-047-063-081-093-103-113-060500-
   /O.NEW.KWNS.SV.A.0811.080805T2300Z-080806T0500Z/
   
   SD 
   .    SOUTH DAKOTA COUNTIES INCLUDED ARE
   
   BUTTE                CUSTER              FALL RIVER          
   HARDING              LAWRENCE            MEADE               
   PENNINGTON           SHANNON             
   
   
   WYC005-011-045-060500-
   /O.NEW.KWNS.SV.A.0811.080805T2300Z-080806T0500Z/
   
   WY 
   .    WYOMING COUNTIES INCLUDED ARE
   
   CAMPBELL             CROOK               WESTON              
   
   
   ATTN...WFO...BYZ...UNR...
   
   
   

   SAW1 
   WW 811 SEVERE TSTM MT SD WY 052300Z - 060500Z
   AXIS..75 STATUTE MILES EAST AND WEST OF LINE..
   10ENE MLS/MILES CITY MT/ - 80SSW RAP/RAPID CITY SD/
   ..AVIATION COORDS.. 65NM E/W /13ENE MLS - 66N BFF/
   HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 32020.
   
   LAT...LON 46470411 42970216 42970513 46470726
   
   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU1.
   

Watch 811 Status Report Messages:

STATUS REPORT #5 ON WW 811

VALID 060440Z - 060500Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 NNE SHR
TO 45 WNW 4BQ TO 15 NW 4BQ TO 35 SSE 4BQ TO 10 NNW GCC TO 35 WNW
GCC.

REMAINDER WW 811 WILL BE ALLOWED TO EXPIRE AT 060500Z.

FOR ADDITIONAL INFORMATION SEE SPC MESOSCALE DISCUSSION 2039.

..EDWARDS..08/06/08

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

&&

STATUS REPORT FOR WS 811 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MTC075-087-060500-

MT 
.    MONTANA COUNTIES INCLUDED ARE

POWDER RIVER	     ROSEBUD		 
$$


SDC063-060500-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

HARDING 	     
$$


WYC005-060500-

WY 
.    WYOMING COUNTIES INCLUDED ARE

CAMPBELL	     
$$


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 #4 ON WW 811

VALID 060340Z - 060440Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2039

..JEWELL..08/06/08

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

&&

STATUS REPORT FOR WS 811 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MTC011-017-025-075-087-060440-

MT 
.    MONTANA COUNTIES INCLUDED ARE

CARTER		     CUSTER		 FALLON 	     
POWDER RIVER	     ROSEBUD		 
$$


SDC019-033-047-063-081-093-103-113-060440-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BUTTE		     CUSTER		 FALL RIVER	     
HARDING 	     LAWRENCE		 MEADE		     
PENNINGTON	     SHANNON		 
$$


WYC005-011-045-060440-

WY 
.    WYOMING COUNTIES INCLUDED ARE

CAMPBELL	     CROOK		 WESTON 	     
$$


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 811

VALID 060245Z - 060340Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2039

..JEWELL..08/06/08

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

&&

STATUS REPORT FOR WS 811 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MTC011-017-025-075-087-060340-

MT 
.    MONTANA COUNTIES INCLUDED ARE

CARTER		     CUSTER		 FALLON 	     
POWDER RIVER	     ROSEBUD		 
$$


SDC019-033-047-063-081-093-103-113-060340-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BUTTE		     CUSTER		 FALL RIVER	     
HARDING 	     LAWRENCE		 MEADE		     
PENNINGTON	     SHANNON		 
$$


WYC005-011-045-060340-

WY 
.    WYOMING COUNTIES INCLUDED ARE

CAMPBELL	     CROOK		 WESTON 	     
$$


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 811

VALID 060140Z - 060240Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..JEWELL..08/06/08

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

&&

STATUS REPORT FOR WS 811 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MTC011-017-025-075-087-060240-

MT 
.    MONTANA COUNTIES INCLUDED ARE

CARTER		     CUSTER		 FALLON 	     
POWDER RIVER	     ROSEBUD		 
$$


SDC019-033-047-063-081-093-103-113-060240-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BUTTE		     CUSTER		 FALL RIVER	     
HARDING 	     LAWRENCE		 MEADE		     
PENNINGTON	     SHANNON		 
$$


WYC005-011-045-060240-

WY 
.    WYOMING COUNTIES INCLUDED ARE

CAMPBELL	     CROOK		 WESTON 	     
$$


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 811

VALID 060030Z - 060140Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..HURLBUT..08/06/08

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

&&

STATUS REPORT FOR WS 811 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MTC011-017-025-075-087-060140-

MT 
.    MONTANA COUNTIES INCLUDED ARE

CARTER		     CUSTER		 FALLON 	     
POWDER RIVER	     ROSEBUD		 
$$


SDC019-033-047-063-081-093-103-113-060140-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BUTTE		     CUSTER		 FALL RIVER	     
HARDING 	     LAWRENCE		 MEADE		     
PENNINGTON	     SHANNON		 
$$


WYC005-011-045-060140-

WY 
.    WYOMING COUNTIES INCLUDED ARE

CAMPBELL	     CROOK		 WESTON 	     
$$


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 Interactive Weather Information Network (IWIN) 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% (F2-F5 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.