SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 673
   NWS STORM PREDICTION CENTER NORMAN OK
   345 PM CDT THU SEP 20 2007
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          CENTRAL AND SOUTHERN MINNESOTA
   
   EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 345 PM UNTIL
   1000 PM CDT.
   
   TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE
   MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTHWEST OF
   REDWOOD FALLS MINNESOTA TO 25 MILES EAST NORTHEAST OF MINNEAPOLIS
   MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
   
   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
   TORNADOES AND 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.
   
   DISCUSSION...ELEVATED CONVECTION CONTINUES WELL N OF THE SURFACE
   WARM FRONT...WHICH HAS NOW DEVELOPED NWD INTO THE MSP AREA.  THE
   BOUNDARY LAYER CONTINUES TO WARM/MOISTEN S OF THE BOUNDARY...AND
   CONVECTIVE INHIBITION IS BEGINNING TO WEAKEN FOR SURFACE-BASED
   PARCELS ACROSS SW AND S CENTRAL MN.  THE NEWER STORM DEVELOPMENT TO
   THE W OF MSP MAY STILL BE SLIGHTLY ELEVATED...BUT IT IS VERY CLOSE
   TO SURFACE BOUNDARY.  GIVEN THE STRONG VERTICAL SHEAR PRESENT...ANY
   STORMS ROOTED IN THE NEAR-SURFACE LAYER WILL BE CAPABLE OF PRODUCING
   TORNADOES.  OTHERWISE...LARGE HAIL AND A FEW DAMAGING GUSTS CAN BE
   EXPECTED THROUGH LATE EVENING.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 26030.
   
   
   ...THOMPSON

   SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 673
   NWS STORM PREDICTION CENTER NORMAN OK
   345 PM CDT THU SEP 20 2007
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          CENTRAL AND SOUTHERN MINNESOTA
   
   EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 345 PM UNTIL
   1000 PM CDT.
   
   TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE
   MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTHWEST OF
   REDWOOD FALLS MINNESOTA TO 25 MILES EAST NORTHEAST OF MINNEAPOLIS
   MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
   
   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
   TORNADOES AND 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.
   
   DISCUSSION...ELEVATED CONVECTION CONTINUES WELL N OF THE SURFACE
   WARM FRONT...WHICH HAS NOW DEVELOPED NWD INTO THE MSP AREA.  THE
   BOUNDARY LAYER CONTINUES TO WARM/MOISTEN S OF THE BOUNDARY...AND
   CONVECTIVE INHIBITION IS BEGINNING TO WEAKEN FOR SURFACE-BASED
   PARCELS ACROSS SW AND S CENTRAL MN.  THE NEWER STORM DEVELOPMENT TO
   THE W OF MSP MAY STILL BE SLIGHTLY ELEVATED...BUT IT IS VERY CLOSE
   TO SURFACE BOUNDARY.  GIVEN THE STRONG VERTICAL SHEAR PRESENT...ANY
   STORMS ROOTED IN THE NEAR-SURFACE LAYER WILL BE CAPABLE OF PRODUCING
   TORNADOES.  OTHERWISE...LARGE HAIL AND A FEW DAMAGING GUSTS CAN BE
   EXPECTED THROUGH LATE EVENING.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 26030.
   
   
   ...THOMPSON

   WOUS64 KWNS 202041
   WOU3
   
   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH OUTLINE UPDATE FOR WT 673
   NWS STORM PREDICTION CENTER NORMAN OK
   345 PM CDT THU SEP 20 2007
   
   TORNADO WATCH 673 IS IN EFFECT UNTIL 1000 PM CDT FOR THE
    FOLLOWING LOCATIONS
   
   MNC003-019-023-025-037-053-059-067-073-085-093-121-123-129-139-
   141-143-145-149-151-163-171-173-210300-
   /O.NEW.KWNS.TO.A.0673.070920T2045Z-070921T0300Z/
   
   MN 
   .    MINNESOTA COUNTIES INCLUDED ARE
   
   ANOKA                CARVER              CHIPPEWA            
   CHISAGO              DAKOTA              HENNEPIN            
   ISANTI               KANDIYOHI           LAC QUI PARLE       
   MCLEOD               MEEKER              POPE                
   RAMSEY               RENVILLE            SCOTT               
   SHERBURNE            SIBLEY              STEARNS             
   STEVENS              SWIFT               WASHINGTON          
   WRIGHT               YELLOW MEDICINE     
   
   
   ATTN...WFO...MPX...
   
   
   

   SAW3 
   WW 673 TORNADO MN 202045Z - 210300Z
   AXIS..40 STATUTE MILES NORTH AND SOUTH OF LINE..
   50NW RWF/REDWOOD FALLS MN/ - 25ENE MSP/MINNEAPOLIS MN/
   ..AVIATION COORDS.. 35NM N/S /46NW RWF - 22ENE MSP/
   HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 26030.
   
   LAT...LON 45639580 45599275 44439275 44479580
   
   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU3.
   

Watch 673 Status Report Messages:

STATUS REPORT #2 ON WW 673

VALID 210040Z - 210140Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..BROYLES..09/21/07

ATTN...WFO...MPX...

&&

STATUS REPORT FOR WT 673 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MNC003-019-023-025-037-049-053-059-067-073-085-093-121-123-129-
139-141-143-145-149-151-163-171-173-210140-

MN 
.    MINNESOTA COUNTIES INCLUDED ARE

ANOKA		     CARVER		 CHIPPEWA	     
CHISAGO 	     DAKOTA		 GOODHUE	     
HENNEPIN	     ISANTI		 KANDIYOHI	     
LAC QUI PARLE	     MCLEOD		 MEEKER 	     
POPE		     RAMSEY		 RENVILLE	     
SCOTT		     SHERBURNE		 SIBLEY 	     
STEARNS 	     STEVENS		 SWIFT		     
WASHINGTON	     WRIGHT		 YELLOW MEDICINE     
$$


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 673

VALID 202355Z - 210040Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..BROYLES..09/20/07

ATTN...WFO...MPX...

&&

STATUS REPORT FOR WT 673 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MNC003-019-023-025-037-053-059-067-073-085-093-121-123-129-139-
141-143-145-149-151-163-171-173-210040-

MN 
.    MINNESOTA COUNTIES INCLUDED ARE

ANOKA		     CARVER		 CHIPPEWA	     
CHISAGO 	     DAKOTA		 HENNEPIN	     
ISANTI		     KANDIYOHI		 LAC QUI PARLE	     
MCLEOD		     MEEKER		 POPE		     
RAMSEY		     RENVILLE		 SCOTT		     
SHERBURNE	     SIBLEY		 STEARNS	     
STEVENS 	     SWIFT		 WASHINGTON	     
WRIGHT		     YELLOW MEDICINE	 
$$


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.