Storm Prediction Center Severe Thunderstorm Watch 276

Note: 
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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   SEL6

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 276
   NWS Storm Prediction Center Norman OK
   950 PM CDT Fri Jun 5 2026

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Southern and Southeastern Iowa

   * Effective this Friday night and Saturday morning from 950 PM
     until 300 AM CDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 2
       inches in diameter possible
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...Supercells should continue to pose a threat for large to
   very large hail this evening (up to 2 inches in diameter possible).
   A tornado or two may also occur with this activity. A loosely
   organized thunderstorm cluster may eventually move across southern
   IA overnight and pose some risk for severe/damaging winds.

   The severe thunderstorm watch area is approximately along and 40
   statute miles north and south of a line from 60 miles west northwest
   of Lamoni IA to 55 miles east northeast of Ottumwa IA. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU6).

   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 274...WW 275...

   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 550. Mean storm motion vector
   27025.

   ...Gleason

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

   SAW6 
   WW 276 SEVERE TSTM IA 060250Z - 060800Z
   AXIS..40 STATUTE MILES NORTH AND SOUTH OF LINE..
   60WNW LWD/LAMONI IA/ - 55ENE OTM/OTTUMWA IA/
   ..AVIATION COORDS.. 35NM N/S /37ESE OVR - 10SE IOW/
   HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 550. MEAN STORM MOTION VECTOR 27025.

   LAT...LON 41529499 41989147 40829147 40369499

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU6.

Watch 276 Status Report Messages:

STATUS REPORT #2 ON WW 276

VALID 060635Z - 060740Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 W LWD TO
25 N LWD TO 30 NNE LWD TO 10 WSW OXV TO 30 N BRL.

..WENDT..06/06/26

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

&&

STATUS REPORT FOR WS 276 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC007-051-053-087-101-117-135-159-177-179-185-060740-

IA 
.    IOWA COUNTIES INCLUDED ARE

APPANOOSE     DAVIS DECATUR     
HENRY     JEFFERSON LUCAS     
MONROE     RINGGOLD VAN BUREN     
WAPELLO      WAYNE 
$$


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 276

VALID 060345Z - 060440Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..LYONS..06/06/26

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

&&

STATUS REPORT FOR WS 276 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

IAC001-003-007-029-039-051-053-087-095-099-101-103-107-117-121-
123-125-135-157-159-173-175-177-179-181-183-185-060440-

IA 
.    IOWA COUNTIES INCLUDED ARE

ADAIR     ADAMS APPANOOSE     
CASS     CLARKE DAVIS     
DECATUR      HENRY IOWA     
JASPER     JEFFERSON JOHNSON     
KEOKUK     LUCAS MADISON     
MAHASKA      MARION MONROE      
POWESHIEK     RINGGOLD TAYLOR      
UNION     VAN BUREN WAPELLO     
WARREN     WASHINGTON  WAYNE     
$$


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.
$$

Note:
 Click for Complete Product Text.

Tornadoes

Wind

Hail

Combined Severe Hail/Wind

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.