Moderate Extreme Weather ● Active

Special Weather Statement issued October 21 at 4:02AM EDT by NWS Detroit/Pontiac MI, United States of America

Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.

Patchy to areas of fog, dense at times, will be likely through
the early morning commute. Visibility restrictions will be highly
variable through the morning. Rapid drops in visibilities, down
to a half-mile or less, will be possible through 7AM EDT. Slow
down and allow plenty of distance between you and the vehicle in
front of you.

Measurements

Coordinates39.9645, -100.8105
RegionShiawassee; Livingston; Washtenaw
Location Precisioncountry
Issuing AuthorityUnited States of America — us-noaa-nws-en
Cap UrgencyExpected
Cap CertaintyObserved
Cap Expires2026-10-21T06:15:00-04:00

Official source

Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.

This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.

Severity as published by WMO Alert Hub (national weather services).

View original report

This event as JSON · API and licence

Source updated 1 hour ago (Oct 21, 2026 08:03 UTC) · we last heard from WMO Alert Hub (national weather services) 18 seconds ago

On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.

About this location

The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.

Area as the agency stated it: Shiawassee; Livingston; Washtenaw

Official authorities in United States

If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.

More for United States →

What to do

Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.

When thunder roars, go indoors — lightning risk outdoors, in vehicles, and first aid for strike victims.

Open Lightning Safety Guide →

Earlier extreme weather events in United States

Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.

Nearby & related events

Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.