SEL5

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 425
   NWS Storm Prediction Center Norman OK
   855 AM CDT Mon Aug 10 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Central Iowa

   * Effective this Monday morning and afternoon from 855 AM until
     200 PM CDT.

   * Primary threats include...
     Scattered damaging winds likely with isolated significant gusts
       to 80 mph possible
     Isolated large hail events to 1.5 inches in diameter possible

   SUMMARY...A fast-moving cluster over western Iowa with a history of
   severe wind gusts should expand and intensify as it sweeps across
   central Iowa through early afternoon. Damaging winds are the primary
   threat.

   The severe thunderstorm watch area is approximately along and 60
   statute miles north and south of a line from 40 miles south of Storm
   Lake IA to 45 miles north of Ottumwa IA. For a complete depiction of
   the watch see the associated watch outline update (WOUS64 KWNS
   WOU5).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   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 424...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   1.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   29050.

   ...Grams

   SEL5

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 425
   NWS Storm Prediction Center Norman OK
   855 AM CDT Mon Aug 10 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Central Iowa

   * Effective this Monday morning and afternoon from 855 AM until
     200 PM CDT.

   * Primary threats include...
     Scattered damaging winds likely with isolated significant gusts
       to 80 mph possible
     Isolated large hail events to 1.5 inches in diameter possible

   SUMMARY...A fast-moving cluster over western Iowa with a history of
   severe wind gusts should expand and intensify as it sweeps across
   central Iowa through early afternoon. Damaging winds are the primary
   threat.

   The severe thunderstorm watch area is approximately along and 60
   statute miles north and south of a line from 40 miles south of Storm
   Lake IA to 45 miles north of Ottumwa IA. For a complete depiction of
   the watch see the associated watch outline update (WOUS64 KWNS
   WOU5).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   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 424...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   1.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   29050.

   ...Grams

   WOUS64 KWNS 101353
   WOU5

   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 425
   NWS STORM PREDICTION CENTER NORMAN OK
   855 AM CDT MON AUG 10 2020

   SEVERE THUNDERSTORM WATCH 425 IS IN EFFECT UNTIL 200 PM CDT
   FOR THE FOLLOWING LOCATIONS

   IAC001-009-013-015-017-023-025-027-029-039-047-049-069-073-075-
   077-079-083-091-099-117-121-123-125-127-135-151-153-157-161-169-
   171-179-181-187-197-101900-
   /O.NEW.KWNS.SV.A.0425.200810T1355Z-200810T1900Z/

   IA 
   .    IOWA COUNTIES INCLUDED ARE

   ADAIR                AUDUBON             BLACK HAWK          
   BOONE                BREMER              BUTLER              
   CALHOUN              CARROLL             CASS                
   CLARKE               CRAWFORD            DALLAS              
   FRANKLIN             GREENE              GRUNDY              
   GUTHRIE              HAMILTON            HARDIN              
   HUMBOLDT             JASPER              LUCAS               
   MADISON              MAHASKA             MARION              
   MARSHALL             MONROE              POCAHONTAS          
   POLK                 POWESHIEK           SAC                 
   STORY                TAMA                WAPELLO             
   WARREN               WEBSTER             WRIGHT              


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

   SAW5 
   WW 425 SEVERE TSTM IA 101355Z - 101900Z
   AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
   40S SLB/STORM LAKE IA/ - 45N OTM/OTTUMWA IA/
   ..AVIATION COORDS.. 50NM N/S /55SW FOD - 40WNW IOW/
   HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..70 KNOTS.
   MAX TOPS TO 550. MEAN STORM MOTION VECTOR 29050.

   LAT...LON 42899523 42629245 40889245 41159523

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU5.

Watch 425 Status Report Messages:

STATUS REPORT #3 ON WW 425

VALID 101735Z - 101840Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 S OXV TO
30 NE OXV TO 20 WSW ALO TO 25 ENE ALO.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1452

..GLEASON..08/10/20

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

&&

STATUS REPORT FOR WS 425 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC013-075-123-135-157-171-179-101840-

IA 
.    IOWA COUNTIES INCLUDED ARE

BLACK HAWK	     GRUNDY		 MAHASKA	     
MONROE		     POWESHIEK		 TAMA		     
WAPELLO 	     
$$


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 425

VALID 101550Z - 101640Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NE SDA TO
45 ESE DNS TO 25 WSW FOD TO 30 WSW MCW.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1449

..GLEASON..08/10/20

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

&&

STATUS REPORT FOR WS 425 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC001-013-015-017-023-025-039-049-069-073-075-077-079-083-091-
099-117-121-123-125-127-135-153-157-169-171-179-181-187-197-
101640-

IA 
.    IOWA COUNTIES INCLUDED ARE

ADAIR		     BLACK HAWK 	 BOONE		     
BREMER		     BUTLER		 CALHOUN	     
CLARKE		     DALLAS		 FRANKLIN	     
GREENE		     GRUNDY		 GUTHRIE	     
HAMILTON	     HARDIN		 HUMBOLDT	     
JASPER		     LUCAS		 MADISON	     
MAHASKA 	     MARION		 MARSHALL	     
MONROE		     POLK		 POWESHIEK	     
STORY		     TAMA		 WAPELLO	     
WARREN		     WEBSTER		 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 425

VALID 101435Z - 101540Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..GLEASON..08/10/20

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

&&

STATUS REPORT FOR WS 425 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC001-009-013-015-017-023-025-027-029-039-047-049-069-073-075-
077-079-083-091-099-117-121-123-125-127-135-151-153-157-161-169-
171-179-181-187-197-101540-

IA 
.    IOWA COUNTIES INCLUDED ARE

ADAIR		     AUDUBON		 BLACK HAWK	     
BOONE		     BREMER		 BUTLER 	     
CALHOUN 	     CARROLL		 CASS		     
CLARKE		     CRAWFORD		 DALLAS 	     
FRANKLIN	     GREENE		 GRUNDY 	     
GUTHRIE 	     HAMILTON		 HARDIN 	     
HUMBOLDT	     JASPER		 LUCAS		     
MADISON 	     MAHASKA		 MARION 	     
MARSHALL	     MONROE		 POCAHONTAS	     
POLK		     POWESHIEK		 SAC		     
STORY		     TAMA		 WAPELLO	     
WARREN		     WEBSTER		 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% (EF2-EF5 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.