Live · updated 1 min ago
McHenry County weather alerts
No active National Weather Service alerts for McHenry County, North Dakota right now. The most recent was a Freeze Warning that ended Oct 16, 10:00 AM.
30 in the last 30 days 74 in 12 months (since Aug 30) most common: Wind Advisory Get alerts on your phone →
Active alerts for McHenry County
Refreshed every few minutes; times in CDT.
All clear in McHenry County
No warnings, watches or advisories are in effect. See what is active across the country, or check a neighbouring county below.
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Where
McHenry County on the map
Alert polygons are NWS's own. Forecast Bar's radar shows the same warnings over live precipitation, with future radar and lightning. See the radar.
Last 30 days
Recent alerts for McHenry County
| Alert | Issued | Ended | Issued by |
|---|---|---|---|
| Freeze Warning | Oct 16, 9:41 AM | Oct 16, 10:00 AM | Bismarck ND |
| Freeze Warning | Oct 16, 7:15 AM | Oct 16, 10:00 AM | Bismarck ND |
| Freeze Warning | Oct 16, 1:14 AM | Oct 16, 8:00 AM | Bismarck ND |
| Freeze Warning | Oct 15, 11:43 PM | Oct 16, 8:00 AM | Bismarck ND |
| Wind Advisory | Oct 15, 11:43 PM | Oct 16, 12:00 AM | Bismarck ND |
| Freeze Warning | Oct 15, 9:32 PM | Oct 16, 8:00 AM | Bismarck ND |
| Wind Advisory | Oct 15, 9:32 PM | Oct 16, 12:00 AM | Bismarck ND |
| Wind Advisory | Oct 15, 7:19 PM | Oct 16, 12:00 AM | Bismarck ND |
| Freeze Warning | Oct 15, 7:19 PM | Oct 16, 8:00 AM | Bismarck ND |
| Wind Advisory | Oct 15, 2:04 PM | Oct 16, 12:00 AM | Bismarck ND |
| Freeze Warning | Oct 15, 2:04 PM | Oct 16, 8:00 AM | Bismarck ND |
| Wind Advisory | Oct 15, 12:42 PM | Oct 16, 12:00 AM | Bismarck ND |
| Wind Advisory | Oct 15, 2:35 AM | Oct 16, 12:00 AM | Bismarck ND |
| Wind Advisory | Oct 14, 9:15 PM | Oct 16, 12:00 AM | Bismarck ND |
| Wind Advisory | Oct 14, 12:22 PM | Oct 16, 12:00 AM | Bismarck ND |
| Freeze Warning | Oct 14, 3:44 AM | Oct 14, 9:00 AM | Bismarck ND |
| Freeze Warning | Oct 13, 9:18 PM | Oct 14, 9:00 AM | Bismarck ND |
| Freeze Warning | Oct 13, 12:09 PM | Oct 14, 9:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 29, 9:52 AM | Sep 29, 10:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 29, 9:52 AM | Sep 29, 12:00 PM | Bismarck ND |
| Dense Fog Advisory | Sep 29, 6:03 AM | Sep 29, 10:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 29, 6:01 AM | Sep 29, 10:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 29, 3:14 AM | Sep 29, 10:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 25, 10:57 AM | Sep 25, 11:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 25, 9:29 AM | Sep 25, 11:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 25, 6:48 AM | Sep 25, 11:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 25, 6:36 AM | Sep 25, 11:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 25, 6:10 AM | Sep 25, 11:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 25, 4:42 AM | Sep 25, 11:00 AM | Bismarck ND |
| Dense Fog Advisory | Sep 25, 3:47 AM | Sep 25, 11:00 AM | Bismarck ND |
Pattern
What McHenry County gets alerted for
Every alert that named McHenry County in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.
Plain English
What these alerts mean
A warning means the hazard is happening or about to; a watch means conditions favour it; an advisory is a lesser hazard still worth planning around.
Sub-freezing temperatures are imminent. Protect tender plants and outdoor plumbing.
Sustained winds of 30 mph or more, or gusts to 45 mph, are expected. Use caution driving high-profile vehicles.
Visibility of a quarter mile or less is expected. Slow down and use low beams.
A storm with hail of 1 inch or larger, winds of 58 mph or more, or both, is occurring or imminent. Move indoors and away from windows.
A heads-up about conditions that do not meet warning or advisory criteria but still deserve attention, such as a strong storm, patchy fog or a brief burst of snow.
A significant threat to public safety issued by civil authorities and relayed through the weather alert system.
Conditions are favourable for severe thunderstorms with large hail or damaging wind. Keep an eye on the sky and on warnings.
Nearby
Alerts near McHenry County
Neighbouring counties in North Dakota
Questions
About McHenry County alerts
How do I get McHenry County weather alerts on my iPhone?
Install Forecast Bar, add McHenry County as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for McHenry County then arrives as a push notification at the moment of issue, with Critical Alerts available for the most dangerous warnings. Forecast Bar also runs on iPad, Apple Watch, Mac and Apple TV.
Where do these alerts come from?
From the National Weather Service alert feed (api.weather.gov). NWS issues alerts by county and by forecast zone; this page lists every product that names McHenry County. Forecast Bar checks the feed continuously and this page refreshes within a few minutes of a change.
What is the difference between a watch, a warning and an advisory?
A warning means the hazard is occurring, imminent or very likely: act now. A watch means conditions are favourable for it to develop: prepare and stay informed. An advisory covers a hazard that is less serious than a warning but can still cause real inconvenience or danger if you are not ready for it.
Can I get this data as JSON?
Yes. /weather-alerts/nd/mchenry-county.json returns the active alerts, the last 30 days and the 12-month counts for McHenry County, refreshed every minute. Please cache responses and credit National Weather Service as the source.
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