No active National Weather Service alerts for Iosco County right now. This page is the live destination for Iosco County (county seat: Tawas City) — bookmark it to check active watches, warnings, and advisories from NWS Detroit/Pontiac, plus regional context, common weather hazards, and the most recent alerts.
The Northern Lower Peninsula spans from Manistee and Bay counties north to the Mackinac Bridge. Counties along the Lake Michigan and Lake Huron shorelines experience significant lake-effect snow, while inland counties (Crawford, Otsego, Oscoda) host dense pine and hardwood forests where wildfire risk peaks in dry springs. Tornadoes are uncommon but not unheard of — Otsego County's 2022 EF-3 tornado is a recent reminder. Winter storms regularly close I-75 and US-31.
Iosco County is served by NWS Detroit/Pontiac, headquartered in White Lake, MI, which issues all official severe-weather watches, warnings, and advisories for the county under the SAME geographic code MIC069. Alerts shown above come directly from the National Weather Service public-alerts feed and update within seconds of issuance.
✓ No active community water systems in Iosco County currently have open health-based MCL violations on file with the EPA Safe Drinking Water Information System. This is the situation residents want to see — every regulated public water system in the county is meeting federal health-based standards as of May 10, 2026.
Based on Iosco County's northern lower peninsula geography, residents and visitors should be prepared for these recurring weather threats:
A Tornado Warning means a tornado has been sighted or indicated by radar in Iosco County or an adjacent area — take shelter immediately. Move to the lowest floor of a sturdy building, away from windows, and into an interior room (basement, bathroom, or closet). Mobile homes and vehicles are not safe; if you're in either, leave for a sturdy structure if you can do so safely. Tornado Warnings are typically issued for 30–60 minutes; stay sheltered until the warning expires or NWS Detroit/Pontiac confirms the threat has passed. Iosco County residents should monitor a NOAA Weather Radio (programmed for SAME code MIC069), local TV, or this page.
A Flood Warning means flooding is occurring or imminent in Iosco County. Do not drive through flooded roads — most flood-related deaths in Michigan occur in vehicles attempting to cross water. If you live in a low-lying area near Tawas City or along major waterways in the county, monitor official water-level reports from the U.S. Geological Survey and prepare to move to higher ground. Flash Flood Warnings carry the same urgency on a shorter time horizon — typically less than an hour to act.
Winter Storm Warnings in Iosco County indicate hazardous winter weather (heavy snow, freezing rain, sleet, or blizzard conditions) is occurring or imminent. Avoid travel; if you must drive, carry an emergency kit (blankets, food, water, flashlight, charged phone). Lake-effect snow can produce 1–3 inches per hour in narrow bands — conditions can change drastically over short distances. Heating-source safety is critical: never run generators or grills indoors, and check carbon-monoxide detectors before relying on alternative heat sources.
Weather rarely respects county lines — check active alerts in Iosco County's neighbors:
Subscribe to push or email notifications for new National Weather Service watches and warnings issued for Iosco County. We'll alert you within seconds of NWS Detroit/Pontiac issuing any severe weather warning for SAME code MIC069.