Live · updated 1 min ago
Trinity County weather alerts
No active National Weather Service alerts for Trinity County, California right now. The most recent was a Frost Advisory that ended Oct 19, 9:00 AM.
18 in the last 30 days 31 in 12 months (since Aug 30) most common: Frost Advisory Get alerts on your phone →
Active alerts for Trinity County
Refreshed every few minutes; times in PDT.
All clear in Trinity County
No warnings, watches or advisories are in effect. See what is active across the country, or check a neighbouring county below.
Get Trinity County alerts on your phone before you think to look them up
Forecast Bar watches the official alert feeds around the clock, NWS in the United States and Environment Canada in Canada, and pushes every warning, watch and advisory for your saved locations the moment it is issued. This page is the same data, a few minutes later.
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Where
Trinity 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 Trinity County
| Alert | Issued | Ended | Issued by |
|---|---|---|---|
| Frost Advisory | Oct 19, 8:46 AM | Oct 19, 9:00 AM | Eureka CA |
| Frost Advisory | Oct 18, 5:56 PM | Oct 19, 9:00 AM | Eureka CA |
| Frost Advisory | Oct 14, 6:09 AM | Oct 14, 8:00 AM | Eureka CA |
| Frost Advisory | Oct 13, 9:57 PM | Oct 14, 8:00 AM | Eureka CA |
| Frost Advisory | Oct 13, 10:20 AM | Oct 14, 8:00 AM | Eureka CA |
| Freeze Warning | Oct 13, 3:58 AM | Oct 13, 8:00 AM | Eureka CA |
| Frost Advisory | Oct 13, 3:58 AM | Oct 13, 8:00 AM | Eureka CA |
| Frost Advisory | Oct 12, 7:41 PM | Oct 13, 8:00 AM | Eureka CA |
| Freeze Warning | Oct 12, 7:41 PM | Oct 13, 8:00 AM | Eureka CA |
| Frost Advisory | Oct 12, 12:47 PM | Oct 13, 8:00 AM | Eureka CA |
| Freeze Warning | Oct 12, 12:47 PM | Oct 13, 8:00 AM | Eureka CA |
| Frost Advisory | Oct 12, 12:38 PM | Oct 13, 8:00 AM | Eureka CA |
| Freeze Warning | Oct 12, 6:47 AM | Oct 12, 9:00 AM | Eureka CA |
| Frost Advisory | Oct 12, 6:47 AM | Oct 12, 9:00 AM | Eureka CA |
| Frost Advisory | Oct 11, 3:09 PM | Oct 12, 9:00 AM | Eureka CA |
| Freeze Warning | Oct 11, 3:09 PM | Oct 12, 9:00 AM | Eureka CA |
| Freeze Warning | Oct 11, 3:00 PM | Oct 12, 9:00 AM | Eureka CA |
| Freeze Warning | Oct 10, 2:51 PM | Oct 11, 9:00 AM | Eureka CA |
Pattern
What Trinity County gets alerted for
Every alert that named Trinity 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.
Frost is expected on the ground. Cover sensitive plants overnight.
Sub-freezing temperatures are imminent. Protect tender plants and outdoor plumbing.
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 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.
Nearby
Alerts near Trinity County
Neighbouring counties in California
Questions
About Trinity County alerts
How do I get Trinity County weather alerts on my iPhone?
Install Forecast Bar, add Trinity County as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for Trinity 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 Trinity 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/ca/trinity-county.json returns the active alerts, the last 30 days and the 12-month counts for Trinity County, refreshed every minute. Please cache responses and credit National Weather Service as the source.
Never find out about a Trinity County alert from this page again
Add Trinity County in Forecast Bar and every NWS warning, watch and advisory arrives as a push notification the moment it is issued, on iPhone, iPad, Apple Watch, Mac and Apple TV.
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