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Fannin County weather alerts

1 active alert for Fannin County, Texas right now: a Heat Advisory.

5 in the last 30 days 5 in 12 months (since Aug 30) most common: Heat Advisory Get alerts on your phone →

Active alerts for Fannin County

Refreshed every few minutes; times in CDT.

Moderate Expected

Heat Advisory

Issued Sun, Sep 6, 3:21 PM CDT by NWS Fort Worth TX Until Mon, Sep 7, 8:00 PM CDT (in 21 hr)

Area: Fannin; Lamar

* WHAT...Heat index values up to 106. * WHERE...Fannin and Lamar Counties. * WHEN...Until 8 PM CDT Monday. * IMPACTS...Hot temperatures and high humidity will increase the risk for heat-related illnesses to occur, particularly for those working or participating in outdoor activities.

What it means: Heat index values high enough to cause heat illness with prolonged exposure. Drink water, stay in air conditioning and check on neighbours.

Full alert with map and forecast →

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Where

Fannin 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 Fannin County

Alert	Issued	Ended	Issued by
Heat Advisory	12:13 PM	8:00 PM	Fort Worth TX
Heat Advisory	12:09 AM	8:00 PM	Fort Worth TX
Heat Advisory	Sep 5, 12:25 PM	8:00 PM	Fort Worth TX
Heat Advisory	Sep 5, 12:34 AM	Sep 5, 7:00 PM	Fort Worth TX

Pattern

What Fannin County gets alerted for

Every alert that named Fannin County in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.

Heat Advisory

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.

Heat Advisory

Heat index values high enough to cause heat illness with prolonged exposure. Drink water, stay in air conditioning and check on neighbours.

Nearby

Alerts near Fannin County

Neighbouring counties in Texas

Hunt County1 Lamar County1 Grayson County1 Delta County1 Collin County1 Hopkins County1 All of Texas →

Questions

About Fannin County alerts

How do I get Fannin County weather alerts on my iPhone?

Install Forecast Bar, add Fannin County as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for Fannin 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 Fannin 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/tx/fannin-county.json returns the active alerts, the last 30 days and the 12-month counts for Fannin County, refreshed every minute. Please cache responses and credit National Weather Service as the source.

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