Storm Prediction Center Severe Thunderstorm Watch 207

Note: 
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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   SEL7

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 207
   NWS Storm Prediction Center Norman OK
   1030 PM CDT Fri May 15 2026

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Eastern Iowa
     Northern Illinois
     Southern Wisconsin

   * Effective this Friday night and Saturday morning from 1030 PM
     until 500 AM CDT.

   * Primary threats include...
     Scattered damaging wind gusts to 70 mph likely
     Isolated large hail events to 1.5 inches in diameter possible

   SUMMARY...A band of storms is forecast to move west to east across
   portions of the Watch area tonight.  Scattered damaging gusts (60-70
   mph) are possible and will likely focus near the more intense cores
   embedded within the band of storms and near bowing segments.  Other
   isolated storms are possible later tonight and may pose a risk for
   isolated large hail.

   The severe thunderstorm watch area is approximately along and 45
   statute miles north and south of a line from 30 miles north
   northwest of Cedar Rapids IA to 10 miles south of Milwaukee WI. For
   a complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU7).

   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 205...

   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 450. Mean storm motion vector
   27040.

   ...Smith

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

   SAW7 
   WW 207 SEVERE TSTM IA IL WI 160330Z - 161000Z
   AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
   30NNW CID/CEDAR RAPIDS IA/ - 10S MKE/MILWAUKEE WI/
   ..AVIATION COORDS.. 40NM N/S /48NNW IOW - 25SE BAE/
   HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 450. MEAN STORM MOTION VECTOR 27040.

   LAT...LON 42939194 43468790 42158790 41639194

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU7.

Watch 207 Status Report Messages:

STATUS REPORT #2 ON WW 207

VALID 160610Z - 160740Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NNE MLI
TO 30 W RFD TO 15 SSW MSN TO 20 NNW MSN.

..BENTLEY..05/16/26

ATTN...WFO...DVN...LOT...MKX...ARX...

&&

STATUS REPORT FOR WS 207 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

ILC007-015-111-141-177-201-160740-

IL 
.    ILLINOIS COUNTIES INCLUDED ARE

BOONE     CARROLL MCHENRY     
OGLE     STEPHENSON  WINNEBAGO     
$$


WIC025-045-055-059-079-101-105-127-133-160740-

WI 
.    WISCONSIN COUNTIES INCLUDED ARE

DANE     GREEN JEFFERSON     
KENOSHA      MILWAUKEE RACINE      
ROCK     WALWORTH WAUKESHA     
$$


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 207

VALID 160425Z - 160540Z

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..MEAD..05/16/26

ATTN...WFO...DVN...LOT...MKX...ARX...

&&

STATUS REPORT FOR WS 207 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

ILC007-015-085-111-141-177-201-160540-

IL 
.    ILLINOIS COUNTIES INCLUDED ARE

BOONE     CARROLL JO DAVIESS     
MCHENRY      OGLE STEPHENSON     
WINNEBAGO     
$$


IAC011-019-031-045-055-061-095-097-103-105-113-160540-

IA 
.    IOWA COUNTIES INCLUDED ARE

BENTON     BUCHANAN CEDAR     
CLINTON      DELAWARE DUBUQUE     
IOWA     JACKSON JOHNSON     
JONES     LINN 
$$


WIC025-043-045-049-055-059-065-079-101-105-127-133-160540-

WI 
.    WISCONSIN COUNTIES INCLUDED ARE

DANE     GRANT GREEN     
IOWA     JEFFERSON KENOSHA     
LAFAYETTE     MILWAUKEE RACINE      
ROCK     WALWORTH WAUKESHA     
$$


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.