Weather Alerts For Waverly, SD

URGENT - WEATHER MESSAGE National Weather Service Aberdeen SD 1044 PM CST Sun Jan 4 2026 Marshall-Roberts-Day-Codington-Grant- Including the cities of Sisseton, Watertown, Milbank, Webster, and Britton 1044 PM CST Sun Jan 4 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST MONDAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Codington, Day, Grant, Marshall, and Roberts Counties. * WHEN...Until 9 AM CST Monday. * 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. &&