Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service St Louis MO
355 PM CDT Mon May 11 2026
ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-122100-
Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL-
Marion IL-Washington IL-Randolph IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison IL-Saint Clair IL-Monroe IL-Knox MO-
Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO-Boone MO-
Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO-
Lincoln MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-
Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-
Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-
Madison MO-Reynolds MO-
355 PM CDT Mon May 11 2026
This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.
.DAYS ONE THROUGH SEVEN...This afternoon through Sunday.
More detailed information can be accessed at:
https://www.weather.gov/media/lsx/DssPacket.pdf
The Area Forecast Discussion is available at:
https://forecast.weather.gov/
product.php?issuedby=LSX&product=AFD&site=lsx
.KEY MESSAGES...
- There is a 30 to 60 percent chance of showers and thunderstorms
Tuesday evening into overnight. A thunderstorm or two could
contain gusty winds or small hail.
- Temperatures will warm to above average on Tuesday, then cool
to near or slightly below average on Wednesday and Thursday.
- Warmer temperatures will return Friday into early next week
along with opportunities for showers and thunderstorms at times.
NOTE: Starting May 29, 2026, this outlook product will be
discontinued. Please see the above products for more detailed
forecast information.
$$
WFO LSX
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
238 PM CDT Mon May 11 2026
WIZ046-047-051-052-056>060-062>072-121945-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
238 PM CDT Mon May 11 2026
This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.
.DAY ONE...Tonight
Isolated thunderstorms are possible late tonight.
.DAYS TWO THROUGH SEVEN...Tuesday through Monday
A few thunderstorms are possible Tuesday afternoon. Small hail
and gusty winds may occur with the strongest storms.
There are chances for thunderstorms this weekend into early next
week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
155 PM CDT Mon May 11 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-121900-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
155 PM CDT Mon May 11 2026 /255 PM EDT Mon May 11 2026/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Limited Frost Risk in Northwestern Indiana.
DISCUSSION...
Patchy frost may develop late tonight across portions of
northwestern Indiana.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Limited Thunderstorm Risk
Thursday through Sunday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
$$
Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
0508 AM CDT Mon May 11 2026
KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-121008-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
0508 AM CDT Mon May 11 2026
This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.
.DAY ONE...Through tonight.
Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on
potential weather hazards.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on
potential weather hazards.
.KEY MESSAGES...
- Trending warmer this week. Highs approaching 90 look possible late
in the week.
- Chance (15-30%) for storms Tuesday. Some of these may be
strong to severe Tuesday afternoon-evening.
$$
Hazardous Weather Outlook
National Weather Service Des Moines IA
414 AM CDT Mon May 11 2026
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-121500-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
414 AM CDT Mon May 11 2026
This Hazardous Weather Outlook is for portions of central Iowa.
.DAY ONE...Today and tonight
A few thunderstorms are possible in northern Iowa late tonight.
Severe weather is unlikely.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
There is a chance of thunderstorms on Tuesday. A few strong
storms could occur in southeastern Iowa, but overall the severe
weather potential is limited.
Tuesday will also be breezy and dry. The strongest winds will come
in northern Iowa Tuesday afternoon, when speeds of 25-30 MPH with
gusts to around 40 MPH are forecast. Relative humidity will also
fall into the 20-30% range Tuesday afternoon, however, any
elevated fire weather concerns are mitigated by mostly green
surface fuels.
Thunderstorm chances return to the forecast at times from Thursday
night into next weekend. Any severe weather potential during this
time will be determined in the coming days.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated.
$$
