SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 618
   NWS STORM PREDICTION CENTER NORMAN OK
   1115 PM CDT TUE SEP 4 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST IOWA
          EXTREME SOUTHEAST MINNESOTA
   
   EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1115 PM
   UNTIL 400 AM CDT.
   
   HAIL TO 2 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 40
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST
   OF WATERLOO IOWA TO 75 MILES EAST NORTHEAST OF WATERLOO IOWA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU8).
   
   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 615...WW 616...WW 617...
   
   DISCUSSION...ELEVATED STORMS WILL LIKELY PERSIST IN THE WAA REGIME
   ABOVE THE SHALLOW COLD POOL ACROSS NE IA...WHILE ADDITIONAL STORMS
   MOVE INTO THIS SAME AREA FROM N CENTRAL IA IN THE NEXT COUPLE OF
   HOURS.  MODERATE INSTABILITY REMAINS INVOF THE OUTFLOW
   BOUNDARY...AND VERTICAL SHEAR IS SUFFICIENT FOR ORGANIZED SEVERE
   STORMS.  THUS...THE RISK FOR AT LEAST ISOLATED LARGE HAIL/DAMAGING
   WINDS IS EXPECTED TO CONTINUE FOR A FEW MORE HOURS.
   
   AVIATION...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 29025.
   
   
   ...THOMPSON

   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 618
   NWS STORM PREDICTION CENTER NORMAN OK
   1115 PM CDT TUE SEP 4 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST IOWA
          EXTREME SOUTHEAST MINNESOTA
   
   EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1115 PM
   UNTIL 400 AM CDT.
   
   WIDELY SCATTERED DAMAGING WINDS TO 70 MPH
   WIDELY SCATTERED LARGE HAIL TO 2.0 INCHES IN DIAMETER
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST
   OF WATERLOO IOWA TO 75 MILES EAST NORTHEAST OF WATERLOO IOWA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU8).
   
   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 615...WW 616...WW 617...
   
   DISCUSSION...ELEVATED STORMS WILL LIKELY PERSIST IN THE WAA REGIME
   ABOVE THE SHALLOW COLD POOL ACROSS NE IA...WHILE ADDITIONAL STORMS
   MOVE INTO THIS SAME AREA FROM N CENTRAL IA IN THE NEXT COUPLE OF
   HOURS.  MODERATE INSTABILITY REMAINS INVOF THE OUTFLOW
   BOUNDARY...AND VERTICAL SHEAR IS SUFFICIENT FOR ORGANIZED SEVERE
   STORMS.  THUS...THE RISK FOR AT LEAST ISOLATED LARGE HAIL/DAMAGING
   WINDS IS EXPECTED TO CONTINUE FOR A FEW MORE HOURS.
   
   AVIATION...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 29025.
   
   
   ...THOMPSON

   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 618
   NWS STORM PREDICTION CENTER NORMAN OK
   1115 PM CDT TUE SEP 4 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST IOWA
          EXTREME SOUTHEAST MINNESOTA
   
   EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1115 PM
   UNTIL 400 AM CDT.
   
   HAIL TO 2 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 40
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST
   OF WATERLOO IOWA TO 75 MILES EAST NORTHEAST OF WATERLOO IOWA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU8).
   
   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 615...WW 616...WW 617...
   
   DISCUSSION...ELEVATED STORMS WILL LIKELY PERSIST IN THE WAA REGIME
   ABOVE THE SHALLOW COLD POOL ACROSS NE IA...WHILE ADDITIONAL STORMS
   MOVE INTO THIS SAME AREA FROM N CENTRAL IA IN THE NEXT COUPLE OF
   HOURS.  MODERATE INSTABILITY REMAINS INVOF THE OUTFLOW
   BOUNDARY...AND VERTICAL SHEAR IS SUFFICIENT FOR ORGANIZED SEVERE
   STORMS.  THUS...THE RISK FOR AT LEAST ISOLATED LARGE HAIL/DAMAGING
   WINDS IS EXPECTED TO CONTINUE FOR A FEW MORE HOURS.
   
   AVIATION...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 29025.
   
   
   ...THOMPSON

   WOUS64 KWNS 050410
   WOU8
   
   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 618
   NWS STORM PREDICTION CENTER NORMAN OK
   1115 PM CDT TUE SEP 4 2012
   
   SEVERE THUNDERSTORM WATCH 618 IS IN EFFECT UNTIL 400 AM CDT
   FOR THE FOLLOWING LOCATIONS
   
   IAC005-037-043-065-067-089-131-191-050900-
   /O.NEW.KWNS.SV.A.0618.120905T0415Z-120905T0900Z/
   
   IA 
   .    IOWA COUNTIES INCLUDED ARE
   
   ALLAMAKEE            CHICKASAW           CLAYTON             
   FAYETTE              FLOYD               HOWARD              
   MITCHELL             WINNESHIEK          
   
   
   MNC045-055-099-050900-
   /O.NEW.KWNS.SV.A.0618.120905T0415Z-120905T0900Z/
   
   MN 
   .    MINNESOTA COUNTIES INCLUDED ARE
   
   FILLMORE             HOUSTON             MOWER               
   
   
   ATTN...WFO...ARX...
   
   
   

   SAW8 
   WW 618 SEVERE TSTM IA MN 050415Z - 050900Z
   AXIS..40 STATUTE MILES NORTH AND SOUTH OF LINE..
   45NW ALO/WATERLOO IA/ - 75ENE ALO/WATERLOO IA/
   ..AVIATION COORDS.. 35NM N/S /14ESE MCW - 36NNW DBQ/
   HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 29025.
   
   LAT...LON 43599302 43549102 42389102 42439302
   
   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU8.
   

Watch 618 Status Report Messages:

STATUS REPORT #4 ON WW 618

VALID 050845Z - 050900Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNE CID
TO 40 NNW DBQ.

REMAINING VALID PORTION OF WW 618 MAY BE ALLOWED TO EXPIRE AT
05/09Z. 
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1888.

..KERR..09/05/12

ATTN...WFO...ARX...

&&

STATUS REPORT FOR WS 618 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC043-050900-

IA 
.    IOWA COUNTIES INCLUDED ARE

CLAYTON 	     
$$


WIC001-023-043-057-063-081-103-123-050900-

WI 
.    WISCONSIN COUNTIES INCLUDED ARE

ADAMS		     CRAWFORD		 GRANT		     
JUNEAU		     LA CROSSE		 MONROE 	     
RICHLAND	     VERNON		 
$$


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 618

VALID 050730Z - 050840Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE MCW
TO 35 NE ALO TO 25 SSE LSE.

..KERR..09/05/12

ATTN...WFO...ARX...

&&

STATUS REPORT FOR WS 618 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC043-050840-

IA 
.    IOWA COUNTIES INCLUDED ARE

CLAYTON 	     
$$


WIC001-023-043-057-063-081-103-123-050840-

WI 
.    WISCONSIN COUNTIES INCLUDED ARE

ADAMS		     CRAWFORD		 GRANT		     
JUNEAU		     LA CROSSE		 MONROE 	     
RICHLAND	     VERNON		 
$$


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 618

VALID 050635Z - 050740Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..KERR..09/05/12

ATTN...WFO...ARX...

&&

STATUS REPORT FOR WS 618 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC005-037-043-065-067-089-131-191-050740-

IA 
.    IOWA COUNTIES INCLUDED ARE

ALLAMAKEE	     CHICKASAW		 CLAYTON	     
FAYETTE 	     FLOYD		 HOWARD 	     
MITCHELL	     WINNESHIEK 	 
$$


MNC045-055-099-050740-

MN 
.    MINNESOTA COUNTIES INCLUDED ARE

FILLMORE	     HOUSTON		 MOWER		     
$$


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 618

VALID 050530Z - 050640Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..KERR..09/05/12

ATTN...WFO...ARX...

&&

STATUS REPORT FOR WS 618 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC005-037-043-065-067-089-131-191-050640-

IA 
.    IOWA COUNTIES INCLUDED ARE

ALLAMAKEE	     CHICKASAW		 CLAYTON	     
FAYETTE 	     FLOYD		 HOWARD 	     
MITCHELL	     WINNESHIEK 	 
$$


MNC045-055-099-050640-

MN 
.    MINNESOTA COUNTIES INCLUDED ARE

FILLMORE	     HOUSTON		 MOWER		     
$$


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.