Storm Prediction Center Severe Thunderstorm Watch 470

Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for Watch Status Reports.

   SEL0

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 470
   NWS Storm Prediction Center Norman OK
   1030 PM CDT Fri Jun 27 2025

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Northwest Iowa
     Northeast Nebraska
     Southeast South Dakota

   * Effective this Friday night and Saturday morning from 1030 PM
     until 300 AM CDT.

   * Primary threats include...
     Scattered damaging winds and isolated significant gusts to 80
       mph possible
     Isolated very large hail events to 2 inches in diameter possible

   SUMMARY...A well-organized/intense cluster of storms with a history
   of severe-caliber winds will continue southeastward late this
   evening into the early overnight. See Mesoscale Discussion 1483 for
   more short-term details.

   The severe thunderstorm watch area is approximately along and 45
   statute miles north and south of a line from 40 miles south of
   Mitchell SD to 55 miles east northeast of Sioux City IA. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU0).

   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 467...WW 468...WW 469...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   2 inches. Extreme turbulence and surface wind gusts to 70 knots. A
   few cumulonimbi with maximum tops to 550. Mean storm motion vector
   30030.

   ...Guyer

Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.

   SAW0 
   WW 470 SEVERE TSTM IA NE SD 280330Z - 280800Z
   AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
   40S MHE/MITCHELL SD/ - 55ENE SUX/SIOUX CITY IA/
   ..AVIATION COORDS.. 40NM N/S /52NNE ONL - 48W FOD/
   HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..70 KNOTS.
   MAX TOPS TO 550. MEAN STORM MOTION VECTOR 30030.

   LAT...LON 43849803 43359538 42059538 42549803

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU0.

Watch 470 Status Report Messages:

STATUS REPORT #1 ON WW 470

VALID 280450Z - 280540Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 SSW YKN
TO 15 E YKN TO 5 NNW FSD.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1486

..THOMPSON..06/28/25

ATTN...WFO...FSD...OAX...

&&

STATUS REPORT FOR WS 470 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC035-093-119-141-143-149-167-193-280540-

IA 
.    IOWA COUNTIES INCLUDED ARE

CHEROKEE	     IDA		 LYON		     
O'BRIEN 	     OSCEOLA		 PLYMOUTH	     
SIOUX		     WOODBURY		 
$$


NEC027-043-051-280540-

NE 
.    NEBRASKA COUNTIES INCLUDED ARE

CEDAR		     DAKOTA		 DIXON		     
$$


SDC083-127-280540-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

LINCOLN 	     UNION		 
$$


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.
$$