Watches, Warnings & Advisories



2 products issued by NWS for: Warrenton MO

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service St Louis MO
456 AM CDT Sun Jul 20 2025

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-211000-
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-
456 AM CDT Sun Jul 20 2025

This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Today and tonight.

While a limited flooding threat exists in northeast Missouri and
west-central Illinois this morning, another round of thunderstorms is
expected later in the afternoon through tonight. These later storms
are more likely to produce heavy rain and flash flooding, with a
limited potential for damaging wind gusts.

Dangerous heat is expected mainly along and south of the Missouri
River today.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Thunderstorms with heavy rain may continue into Monday morning. A
slight chance of thunderstorms exists Tuesday and again Friday.

Dangerous heat will continue in areas south of the Missouri River
Monday, and expand into the rest of the area Tuesday through
Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

19




Extreme Heat Warning

URGENT - WEATHER MESSAGE
National Weather Service St Louis MO
1229 AM CDT Sun Jul 20 2025

ILZ079-100>102-MOZ041-042-047>052-059>065-072>075-084-085-099-202030-
/O.CON.KLSX.XH.W.0002.000000T0000Z-250725T0000Z/
Randolph IL-Madison IL-Saint Clair IL-Monroe IL-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-
Including the cities of Alton, Jefferson City, Belleville,
Edwardsville, Chester, Mexico, Fulton, Columbia, Sparta, Saint
Charles, Union, Farmington, Cahokia, Sullivan, Saint Louis, and
Washington
1229 AM CDT Sun Jul 20 2025

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THURSDAY...

* WHAT...Dangerously hot conditions with heat index values up to 110.

* WHERE...Portions of southwest Illinois and central, east central,
  and southeast Missouri.

* WHEN...Until 7 PM CDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...The long duration of this event is likely to
  worsen heat related impacts, and additional extensions may be
  needed beyond Thursday as forecast confidence increases.

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.

People in the Saint Louis Metropolitan Area can get information
about cooling centers or energy assistance related to the excessive
heat by calling the United Way of Greater Saint Louis at
800-427-4626, or if calling from a land line phone dial 2-1-1. You
can also call Cool Down Saint Louis at 314-241-7668.

&&

$$