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Home Return to list Dense Fog Advisory 0017 Issued by the St. Louis Forecast Office
Action: New Issued At: 2025-12-23 21:54:03 595 WWUS73 KLSX 240353 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 953 PM CST Tue Dec 23 2025 ILZ065-069-070-074-079-101-102-MOZ074-075-085-241500- /O.NEW.KLSX.FG.Y.0017.251224T0400Z-251224T1500Z/ Fayette IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Saint Clair IL-Monroe IL-Saint Francois MO-Sainte Genevieve MO-Madison MO- Including the cities of Sparta, Farmington, Belleville, Cahokia, Centralia, Chester, Vandalia, and Salem 953 PM CST Tue Dec 23 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST WEDNESDAY... * WHAT...Visibility less than one mile in dense fog. * WHERE...In Illinois, Clinton IL, Fayette IL, Marion IL, Washington IL, Monroe IL, Randolph IL, and Saint Clair IL Counties. In Missouri, Madison MO, Saint Francois MO, and Sainte Genevieve MO Counties. * WHEN...Until 9 AM CST Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ Jaja Action: Continued Issued At: 2025-12-24 00:30:07 688 WWUS73 KLSX 240629 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 1229 AM CST Wed Dec 24 2025 ILZ059-060-064-100-MOZ041-047>051-059>065-072-073-084-099-241500- /O.EXA.KLSX.FG.Y.0017.000000T0000Z-251224T1500Z/ Macoupin IL-Montgomery IL-Bond IL-Madison IL-Boone MO-Moniteau MO- Cole MO-Osage MO-Callaway MO-Montgomery MO-Gasconade MO-Warren MO- Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO- Jefferson MO-Crawford MO-Washington MO-Iron MO-Reynolds MO- Including the cities of Fulton, Edwardsville, Saint Charles, Sullivan, Alton, Jefferson City, Litchfield, Union, Saint Louis, Columbia, and Washington 1229 AM CST Wed Dec 24 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 9 AM CST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Visibility will change rapidly in short distances. Drivers should be remain vigilant, especially when approaching low lying areas and areas adjacent to rivers, where fog is likely to be more dense than outlying locations. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ ILZ065-069-070-074-079-101-102-MOZ074-075-085-241500- /O.CON.KLSX.FG.Y.0017.000000T0000Z-251224T1500Z/ Fayette IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Saint Clair IL-Monroe IL-Saint Francois MO-Sainte Genevieve MO-Madison MO- Including the cities of Sparta, Centralia, Chester, Salem, Belleville, Farmington, Cahokia, and Vandalia 1229 AM CST Wed Dec 24 2025 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...In Illinois, Clinton IL, Fayette IL, Marion IL, Washington IL, Monroe IL, Randolph IL, and Saint Clair IL Counties. In Missouri, Madison MO, Saint Francois MO, and Sainte Genevieve MO Counties. * WHEN...Until 9 AM CST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Visibility will change rapidly in short distances. Drivers should be remain vigilant, especially when approaching low lying areas and areas adjacent to rivers, where fog is likely to be more dense than outlying locations. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ Maples Action: Area Extended Issued At: 2025-12-24 00:30:07 688 WWUS73 KLSX 240629 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 1229 AM CST Wed Dec 24 2025 ILZ059-060-064-100-MOZ041-047>051-059>065-072-073-084-099-241500- /O.EXA.KLSX.FG.Y.0017.000000T0000Z-251224T1500Z/ Macoupin IL-Montgomery IL-Bond IL-Madison IL-Boone MO-Moniteau MO- Cole MO-Osage MO-Callaway MO-Montgomery MO-Gasconade MO-Warren MO- Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO- Jefferson MO-Crawford MO-Washington MO-Iron MO-Reynolds MO- Including the cities of Fulton, Edwardsville, Saint Charles, Sullivan, Alton, Jefferson City, Litchfield, Union, Saint Louis, Columbia, and Washington 1229 AM CST Wed Dec 24 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 9 AM CST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Visibility will change rapidly in short distances. Drivers should be remain vigilant, especially when approaching low lying areas and areas adjacent to rivers, where fog is likely to be more dense than outlying locations. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ ILZ065-069-070-074-079-101-102-MOZ074-075-085-241500- /O.CON.KLSX.FG.Y.0017.000000T0000Z-251224T1500Z/ Fayette IL-Clinton IL-Marion IL-Washington IL-Randolph IL-Saint Clair IL-Monroe IL-Saint Francois MO-Sainte Genevieve MO-Madison MO- Including the cities of Sparta, Centralia, Chester, Salem, Belleville, Farmington, Cahokia, and Vandalia 1229 AM CST Wed Dec 24 2025 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...In Illinois, Clinton IL, Fayette IL, Marion IL, Washington IL, Monroe IL, Randolph IL, and Saint Clair IL Counties. In Missouri, Madison MO, Saint Francois MO, and Sainte Genevieve MO Counties. * WHEN...Until 9 AM CST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Visibility will change rapidly in short distances. Drivers should be remain vigilant, especially when approaching low lying areas and areas adjacent to rivers, where fog is likely to be more dense than outlying locations. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ Maples Action: Cancelled Issued At: 2025-12-24 08:49:43 330 WWUS73 KLSX 241449 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 849 AM CST Wed Dec 24 2025 ILZ059-060-064-065-069-070-074-079-100>102-MOZ041-047>051-059>065- 072>075-084-085-099-241600- /O.CAN.KLSX.FG.Y.0017.000000T0000Z-251224T1500Z/ Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL-Marion IL- Washington IL-Randolph IL-Madison IL-Saint Clair IL-Monroe IL- Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO- Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO- Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Fulton, Columbia, Alton, Jefferson City, Vandalia, Farmington, Litchfield, Salem, Centralia, Edwardsville, Union, Sullivan, Sparta, Washington, Cahokia, Belleville, Saint Louis, Saint Charles, and Chester 849 AM CST Wed Dec 24 2025 ...DENSE FOG ADVISORY IS CANCELLED... The threat has ended. $$ Kimble | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||