Weather Alerts For Martinsburg, MO

URGENT - WEATHER MESSAGE National Weather Service St Louis MO 729 PM CST Fri Dec 26 2025 Knox MO-Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO- Audrain MO- Including the cities of Hannibal, Mexico, and Bowling Green 729 PM CST Fri Dec 26 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST SATURDAY... * WHAT...Visibility less than one mile in dense fog. * WHERE...Audrain MO, Knox MO, Lewis MO, Marion MO, Monroe MO, Pike MO, Ralls MO, and Shelby MO Counties. * WHEN...Until 9 AM CST Saturday. * 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. &&