Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Quad Cities IA IL
957 AM CDT Sat Jul 18 2026
IAZ067-068-076>078-087>089-098-099-ILZ015-024>026-034-035-MOZ009-010-
190000-
/O.CON.KDVN.HT.Y.0003.260718T1700Z-260719T0000Z/
Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-Henry IA-Des
Moines-Van Buren-Lee-Rock Island-Mercer-Henderson-Warren-Hancock-
McDonough-Scotland-Clark-
Including the cities of Macomb, Davenport, Keosauqua, Muscatine,
Kahoka, Oquawka, Aledo, Burlington, Carthage, Bettendorf, Fort
Madison, Washington, Sigourney, Fairfield, Mount Pleasant, Moline,
Memphis, Rock Island, Wapello, and Monmouth
957 AM CDT Sat Jul 18 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
* WHAT...Heat index values around 100 degrees expected.
* WHERE...Portions of northwest and west central Illinois, east
central and southeast Iowa, and northeast Missouri.
* WHEN...Until 7 PM CDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service St Louis MO
304 AM CDT Sat Jul 18 2026
ILZ069-074-079-100>102-MOZ041-047>051-059>065-072>075-084-085-099-
182315-
/O.CON.KLSX.HT.Y.0004.260718T1700Z-260722T0000Z/
Clinton IL-Washington IL-Randolph IL-Madison IL-Saint Clair IL-
Monroe IL-Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-
Montgomery MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-
Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-
Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-
Madison MO-Reynolds MO-
Including the cities of Union, Fulton, Cahokia, Washington, Saint
Louis, Farmington, Chester, Edwardsville, Belleville, Alton,
Sullivan, Columbia, Jefferson City, Sparta, and Saint Charles
304 AM CDT Sat Jul 18 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 7 PM CDT
TUESDAY...
* WHAT...Heat index values up to 105 expected.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...From noon today to 7 PM CDT Tuesday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances. Take extra precautions if you work or spend time
outside. When possible reschedule strenuous activities to early
morning or evening. Know the signs and symptoms of heat exhaustion
and heat stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational Safety
and Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Springfield MO
603 AM CDT Sat Jul 18 2026
KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-191115-
Bourbon-Crawford-Cherokee-Benton-Morgan-Miller-Maries-Vernon-
St. Clair-Hickory-Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas-
Laclede-Texas-Dent-Jasper-Dade-Greene-Webster-Wright-Newton-
Lawrence-Christian-Douglas-Howell-Shannon-McDonald-Barry-Stone-
Taney-Ozark-Oregon-
603 AM CDT Sat Jul 18 2026
This Hazardous Weather Outlook is for portions of the Missouri
Ozarks and extreme southeast Kansas.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited lightning risk.
Limited excessive heat risk.
DISCUSSION...
There is a 10 to 20% chance for isolated showers and storms
throughout the day today.
Afternoon heat index values will climb into the 95 to 100 degree
range.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Scattered showers and thunderstorms on Sunday, particularly across
central Missouri and the eastern Ozarks.
Hot and humid conditions early next week with heat index values
of 95 to 105 degrees.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed through tonight.
&&
More detailed information can be accessed at:
http://www.weather.gov/sgf/dsspacket
This product in graphical format...along with other weather...
hydrological and climate information...at
http://www.weather.gov/sgf
$$
Didio
Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
0505 AM CDT Sat Jul 18 2026
KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-191005-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
0505 AM CDT Sat Jul 18 2026
This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.
.DAY ONE...Through tonight.
There is a low probability of widespread hazardous weather.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on
potential weather hazards.
.KEY MESSAGES...
- Scattered showers and thunderstorms this afternoon, though
most areas will stay dry. Localized brief downpours and gusty
winds are possible with the strongest storms.
- Heat and humidity continue for the next several days.
Temperatures and heat indices elevate through the weekend,
with Sunday and Monday expected to be the warmest days.
- Relief from the heat arrives for Wednesday and Thursday, with
lesser humidity and highs in the 80s.
$$
Hazardous Weather Outlook
National Weather Service Des Moines IA
441 AM CDT Sat Jul 18 2026
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-190945-
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-
441 AM CDT Sat Jul 18 2026
This Hazardous Weather Outlook is for portions of central Iowa.
.DAY ONE...Today and tonight
There is a low chance for isolated thunderstorms this afternoon
and evening, mainly along and south of I-80. Severe weather is
not anticipated, but wind gusts up to 30 mph are possible.
.DAYS TWO THROUGH SEVEN...Sunday through Friday
Hot weather will persist over much of the area through Monday with
Monday being the hottest day when heat index values will be over
100 degrees in most places.
Additional thunderstorm chances are forecast at times Sunday
night through Monday night with the severe weather risk refined
in the coming days.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hagenhoff
Hazardous Weather Outlook
National Weather Service Wichita KS
428 AM CDT Sat Jul 18 2026
KSZ032-033-047>053-067>072-082-083-091>096-098>100-190930-
Russell-Lincoln-Barton-Ellsworth-Saline-Rice-McPherson-Marion-Chase-
Reno-Harvey-Butler-Greenwood-Woodson-Allen-Kingman-Sedgwick-Harper-
Sumner-Cowley-Elk-Wilson-Neosho-Chautauqua-Montgomery-Labette-
428 AM CDT Sat Jul 18 2026
This hazardous weather outlook is for portions of central Kansas,
east central Kansas, south central Kansas and southeast Kansas.
.DAY ONE...Today and Tonight
Isolated thunderstorms are possible from late this morning through
the early evening hours across the entire forecast area. No severe
weather is anticipated.
.DAYS TWO THROUGH SEVEN...Sunday through Friday
Isolated thunderstorms are possible late Sunday morning through
early Sunday evening. No severe weather is expected.
Heat indices around 100 degrees are expected area wide Sunday
afternoon. Heat indices up to 110 degrees are possible area wide
Monday afternoon and across southern Kansas Tuesday afternoon.
Thunderstorm chances may return Wednesday night and Thursday night.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated today or tonight.
&&
For a graphical version of this information, see our webpage at:
https://www.weather.gov/erh/ghwo?wfo=ict
$$
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
304 AM CDT Sat Jul 18 2026
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-190815-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
304 AM CDT Sat Jul 18 2026
This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.
.DAY ONE...TODAY AND TONIGHT
Hot and humid conditions will continue today with peak heat indices
of 95 to 100. A heat advisory is in effect for most areas south
of Interstate 80 in Iowa, and from near the Quad Cities metro
area southward in Illinois, where head indices of 100 to 105 are
possible.
Thunderstorms are expected this afternoon and evening, especially
along and south of Interstate 80. The Storm Prediction Center has a
marginal, level 1 out of 5, risk of severe storms. The primary risk
will be damaging winds. A level 2, slight risk is forecast in
portions of central Illinois, including portions of Bureau and
Putnam counties.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
Hot and humid conditions will return again on Monday. There is a 50-
70% probability of heat headlines being needed for much of the area.
Thunderstorms will be possible Monday afternoon/evening. The Storm
Prediction Center has a slight, level 2 out of 5, risk for severe
storms. The primary risk looks to be damaging winds.
.SPOTTER INFORMATION STATEMENT...
Spotter activation may be needed this afternoon and evening.
$$
