SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 460
   NWS STORM PREDICTION CENTER NORMAN OK
   700 AM CDT THU JUN 18 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN IOWA
   
   EFFECTIVE THIS THURSDAY MORNING FROM 700 AM UNTIL 1100 AM CDT.
   
   HAIL TO 1.5 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 50
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST
   NORTHWEST OF FORT DODGE IOWA TO 25 MILES NORTHEAST OF WATERLOO
   IOWA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
   WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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 457...WW 458...WW 459...
   
   DISCUSSION...MATURE MCS/BOW MOVING GENERALLY EWD AT 50KT INTO NWRN
   IA ATTM. FAVORABLE LARGE SCALE SUPPORT IN THE FORM OF A
   LOW-AMPLITUDE SHORT
   WAVE TROUGH...AND ABUNDANT WARM/MOIST AIR STREAMING INTO THE AREA ON
   50-60KT LLJ...SHOULD MAINTAIN THE THREAT FOR WIND DAMAGE ALONG THE
   LEADING EDGE OF THE BOW AS IT TRACKS ACROSS NRN IA OVER THE NEXT
   COUPLE OF HOURS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 27045.
   
   
   ...CARBIN

   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 460
   NWS STORM PREDICTION CENTER NORMAN OK
   700 AM CDT THU JUN 18 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN IOWA
   
   EFFECTIVE THIS THURSDAY MORNING FROM 700 AM UNTIL 1100 AM CDT.
   
   HAIL TO 1.5 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 50
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST
   NORTHWEST OF FORT DODGE IOWA TO 25 MILES NORTHEAST OF WATERLOO
   IOWA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
   WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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 457...WW 458...WW 459...
   
   DISCUSSION...MATURE MCS/BOW MOVING GENERALLY EWD AT 50KT INTO NWRN
   IA ATTM. FAVORABLE LARGE SCALE SUPPORT IN THE FORM OF A
   LOW-AMPLITUDE SHORT
   WAVE TROUGH...AND ABUNDANT WARM/MOIST AIR STREAMING INTO THE AREA ON
   50-60KT LLJ...SHOULD MAINTAIN THE THREAT FOR WIND DAMAGE ALONG THE
   LEADING EDGE OF THE BOW AS IT TRACKS ACROSS NRN IA OVER THE NEXT
   COUPLE OF HOURS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 27045.
   
   
   ...CARBIN

   WOUS64 KWNS 181203
   WOU0
   
   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 460
   NWS STORM PREDICTION CENTER NORMAN OK
   700 AM CDT THU JUN 18 2009
   
   SEVERE THUNDERSTORM WATCH 460 IS IN EFFECT UNTIL 1100 AM CDT
   FOR THE FOLLOWING LOCATIONS
   
   IAC013-017-023-025-033-037-063-067-069-075-079-081-083-089-091-
   109-127-131-147-151-169-171-187-189-195-197-181600-
   /O.NEW.KWNS.SV.A.0460.090618T1200Z-090618T1600Z/
   
   IA 
   .    IOWA COUNTIES INCLUDED ARE
   
   BLACK HAWK           BREMER              BUTLER              
   CALHOUN              CERRO GORDO         CHICKASAW           
   EMMET                FLOYD               FRANKLIN            
   GRUNDY               HAMILTON            HANCOCK             
   HARDIN               HOWARD              HUMBOLDT            
   KOSSUTH              MARSHALL            MITCHELL            
   PALO ALTO            POCAHONTAS          STORY               
   TAMA                 WEBSTER             WINNEBAGO           
   WORTH                WRIGHT              
   
   
   ATTN...WFO...DMX...ARX...
   
   
   

   SAW0 
   WW 460 SEVERE TSTM IA 181200Z - 181600Z
   AXIS..50 STATUTE MILES NORTH AND SOUTH OF LINE..
   35WNW FOD/FORT DODGE IA/ - 25NE ALO/WATERLOO IA/
   ..AVIATION COORDS.. 45NM N/S /25WNW FOD - 59ESE MCW/
   HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 550. MEAN STORM MOTION VECTOR 27045.
   
   LAT...LON 43479483 43529205 42089205 42029483
   
   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU0.
   

Watch 460 Status Report Messages:

STATUS REPORT #2 ON WW 460

VALID 181335Z - 181440Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..MEAD..06/18/09

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

&&

STATUS REPORT FOR WS 460 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC013-017-023-025-033-037-063-067-069-075-079-081-083-089-091-
109-127-131-147-151-169-171-187-189-195-197-181440-

IA 
.    IOWA COUNTIES INCLUDED ARE

BLACK HAWK	     BREMER		 BUTLER 	     
CALHOUN 	     CERRO GORDO	 CHICKASAW	     
EMMET		     FLOYD		 FRANKLIN	     
GRUNDY		     HAMILTON		 HANCOCK	     
HARDIN		     HOWARD		 HUMBOLDT	     
KOSSUTH 	     MARSHALL		 MITCHELL	     
PALO ALTO	     POCAHONTAS 	 STORY		     
TAMA		     WEBSTER		 WINNEBAGO	     
WORTH		     WRIGHT		 
$$


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 460

VALID 181250Z - 181340Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..CARBIN..06/18/09

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

&&

STATUS REPORT FOR WS 460 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC013-017-023-025-033-037-063-067-069-075-079-081-083-089-091-
109-127-131-147-151-169-171-187-189-195-197-181340-

IA 
.    IOWA COUNTIES INCLUDED ARE

BLACK HAWK	     BREMER		 BUTLER 	     
CALHOUN 	     CERRO GORDO	 CHICKASAW	     
EMMET		     FLOYD		 FRANKLIN	     
GRUNDY		     HAMILTON		 HANCOCK	     
HARDIN		     HOWARD		 HUMBOLDT	     
KOSSUTH 	     MARSHALL		 MITCHELL	     
PALO ALTO	     POCAHONTAS 	 STORY		     
TAMA		     WEBSTER		 WINNEBAGO	     
WORTH		     WRIGHT		 
$$


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.