One product issued by NWS for: Jefferson City MO
Extreme Heat Watch
URGENT - WEATHER MESSAGE National Weather Service St Louis MO 205 AM CDT Sat Aug 8 2026 ILZ069-074-079-100>102-MOZ041-047>051-059>065-082215- /O.NEW.KLSX.XH.A.0003.260809T1700Z-260813T0100Z/ 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- Including the cities of Alton, Edwardsville, Sparta, Columbia, Sullivan, Jefferson City, Union, Cahokia, Washington, Chester, Belleville, Saint Louis, Saint Charles, and Fulton 205 AM CDT Sat Aug 8 2026 ...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH WEDNESDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 108 possible. * WHERE...Portions of south central and southwest Illinois and central and east central Missouri. * WHEN...From Sunday afternoon through Wednesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. 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. && $$ BAH