SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 341
   NWS STORM PREDICTION CENTER NORMAN OK
   1100 AM MDT SUN JUN 7 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST COLORADO
   
   EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 1100 AM UNTIL
   500 PM MDT.
   
   HAIL TO 2.5 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 55
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES SOUTH OF
   FORT COLLINS COLORADO TO 20 MILES EAST SOUTHEAST OF AKRON
   COLORADO.  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.
   
   DISCUSSION...THUNDERSTORMS ARE BEGINNING TO DEVELOP ALONG THE FRONT
   RANGE IN THE MOIST UPSLOPE FLOW REGIME TO THE N OF A SLOW-MOVING
   FRONT.  SURFACE HEATING IN CLOUD BREAKS AND STEEP MID LEVEL LAPSE
   RATES WILL CONTRIBUTE TO MODERATE INSTABILITY THROUGH THIS AFTERNOON
   ON THE IMMEDIATE COOL SIDE OF THE BOUNDARY...AND STORM COVERAGE WILL
   LIKELY INCREASE AS A MID LEVEL TROUGH MOVES NEWD FROM CENTRAL CO. 
   THE COMBINATION OF VERTICAL SHEAR AND STRONG DEEP LAYER VERTICAL
   SHEAR WILL SUPPORT SUPERCELLS CAPABLE OF PRODUCING ISOLATED VERY
   LARGE HAIL.  ISOLATED DAMAGING WINDS WILL ALSO BE POSSIBLE...AND AN
   ISOLATED TORNADO CANNOT BE RULED OUT.
   
   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 500. MEAN STORM
   MOTION VECTOR 26025.
   
   
   ...THOMPSON

   SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 341
   NWS STORM PREDICTION CENTER NORMAN OK
   1100 AM MDT SUN JUN 7 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST COLORADO
   
   EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 1100 AM UNTIL
   500 PM MDT.
   
   HAIL TO 2.5 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 55
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES SOUTH OF
   FORT COLLINS COLORADO TO 20 MILES EAST SOUTHEAST OF AKRON
   COLORADO.  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.
   
   DISCUSSION...THUNDERSTORMS ARE BEGINNING TO DEVELOP ALONG THE FRONT
   RANGE IN THE MOIST UPSLOPE FLOW REGIME TO THE N OF A SLOW-MOVING
   FRONT.  SURFACE HEATING IN CLOUD BREAKS AND STEEP MID LEVEL LAPSE
   RATES WILL CONTRIBUTE TO MODERATE INSTABILITY THROUGH THIS AFTERNOON
   ON THE IMMEDIATE COOL SIDE OF THE BOUNDARY...AND STORM COVERAGE WILL
   LIKELY INCREASE AS A MID LEVEL TROUGH MOVES NEWD FROM CENTRAL CO. 
   THE COMBINATION OF VERTICAL SHEAR AND STRONG DEEP LAYER VERTICAL
   SHEAR WILL SUPPORT SUPERCELLS CAPABLE OF PRODUCING ISOLATED VERY
   LARGE HAIL.  ISOLATED DAMAGING WINDS WILL ALSO BE POSSIBLE...AND AN
   ISOLATED TORNADO CANNOT BE RULED OUT.
   
   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 500. MEAN STORM
   MOTION VECTOR 26025.
   
   
   ...THOMPSON

   WOUS64 KWNS 071657
   WOU1
   
   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 341
   NWS STORM PREDICTION CENTER NORMAN OK
   1100 AM MDT SUN JUN 7 2009
   
   SEVERE THUNDERSTORM WATCH 341 IS IN EFFECT UNTIL 500 PM MDT
   FOR THE FOLLOWING LOCATIONS
   
   COC001-005-014-031-035-039-073-075-087-121-123-072300-
   /O.NEW.KWNS.SV.A.0341.090607T1700Z-090607T2300Z/
   
   CO 
   .    COLORADO COUNTIES INCLUDED ARE
   
   ADAMS                ARAPAHOE            BROOMFIELD          
   DENVER               DOUGLAS             ELBERT              
   LINCOLN              LOGAN               MORGAN              
   WASHINGTON           WELD                
   
   
   ATTN...WFO...BOU...
   
   
   

   SAW1 
   WW 341 SEVERE TSTM CO 071700Z - 072300Z
   AXIS..55 STATUTE MILES NORTH AND SOUTH OF LINE..
   20S FCL/FORT COLLINS CO/ - 20ESE AKO/AKRON CO/
   ..AVIATION COORDS.. 50NM N/S /27NW DEN - 15ESE AKO/
   HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 26025.
   
   LAT...LON 40950501 40860287 39270287 39360501
   
   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU1.
   

Watch 341 Status Report Messages:

STATUS REPORT #4 ON WW 341

VALID 072255Z - 072340Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 E LIC TO
25 SE AKO.

..SPC..06/07/09

ATTN...WFO...BOU...

&&

STATUS REPORT FOR WS 341 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

COC073-121-072340-

CO 
.    COLORADO COUNTIES INCLUDED ARE

LINCOLN 	     WASHINGTON 	 
$$


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 341

VALID 072035Z - 072140Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 975.

..GRAMS..06/07/09

ATTN...WFO...BOU...

&&

STATUS REPORT FOR WS 341 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

COC001-005-013-014-031-035-039-059-069-073-075-087-121-123-
072140-

CO 
.    COLORADO COUNTIES INCLUDED ARE

ADAMS		     ARAPAHOE		 BOULDER	     
BROOMFIELD	     DENVER		 DOUGLAS	     
ELBERT		     JEFFERSON		 LARIMER	     
LINCOLN 	     LOGAN		 MORGAN 	     
WASHINGTON	     WELD		 
$$


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 341

VALID 071940Z - 072040Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..GRAMS..06/07/09

ATTN...WFO...BOU...

&&

STATUS REPORT FOR WS 341 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

COC001-005-013-014-031-035-039-059-069-073-075-087-121-123-
072040-

CO 
.    COLORADO COUNTIES INCLUDED ARE

ADAMS		     ARAPAHOE		 BOULDER	     
BROOMFIELD	     DENVER		 DOUGLAS	     
ELBERT		     JEFFERSON		 LARIMER	     
LINCOLN 	     LOGAN		 MORGAN 	     
WASHINGTON	     WELD		 
$$


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 341

VALID 071840Z - 071940Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..GRAMS..06/07/09

ATTN...WFO...BOU...

&&

STATUS REPORT FOR WS 341 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

COC001-005-013-014-031-035-039-059-069-073-075-087-121-123-
071940-

CO 
.    COLORADO COUNTIES INCLUDED ARE

ADAMS		     ARAPAHOE		 BOULDER	     
BROOMFIELD	     DENVER		 DOUGLAS	     
ELBERT		     JEFFERSON		 LARIMER	     
LINCOLN 	     LOGAN		 MORGAN 	     
WASHINGTON	     WELD		 
$$


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.