Red Flag Warning Issued for San Luis Valley and Surrounding Colorado Areas

Source: NOAA · Southern Colorado

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The National Weather Service in Pueblo has issued a Red Flag Warning for gusty winds and low relative humidity in parts of southern Colorado, effective from noon to 8 PM MDT on Saturday.

What this NWS weather alert tells you, and what most readers miss

This notice was issued by NOAA on May 1, 2026 and geographically references Southern Colorado. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Weather Alerts - determines the warning protocol behind it, which shapes what protective action (seeking shelter, following evacuation orders if issued, monitoring official updates) is recommended and which agency holds authority to issue or cancel it.

Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly NOAA detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action, a single localized NWS weather alert is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.

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Alert Details

A Red Flag Warning has been issued by the National Weather Service (NWS) Pueblo CO. This alert is for critical fire weather conditions, with the event code FWW.

Affected Areas

The warning affects the San Luis Valley, including Alamosa, Del Norte, Fort Garland, and Saguache; Huerfano County, including Walsenburg; and Western Las Animas County, including Trinidad and Thatcher. These correspond to Fire Weather Zones 224, 229, and 230.

What You Should Do

A Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. Prepare for extreme fire behavior due to the combination of strong winds, low relative humidity, and warm temperatures.

Expected Conditions

Winds from the southwest at 15 to 25 mph with gusts up to 40 mph. Relative humidity as low as 6 percent on Friday and as low as 10 percent on Saturday.

Timeline

The alert is effective from 10:31 AM MDT on April 24, 2026, with onset at 12:00 PM MDT on April 25, 2026. It expires at 2:45 AM MDT on April 25, 2026, and ends at 8:00 PM MDT on April 25, 2026. A separate period is in effect until 9:00 PM MDT on April 24, 2026.

Original source: NOAA Official Notice ↗

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Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
The National Weather Service in Pueblo has issued a Red Flag Warning for gusty winds and low relative humidity in parts of southern Colorado, effective from noon to 8 PM MDT on Saturday.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Southern Colorado. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.