Red Flag Warning for Western South Dakota and Northeastern Wyoming

Source: NOAA · Western South Dakota and Northeastern Wyoming

If you are in immediate danger, call emergency services now.

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Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.

A Red Flag Warning has been issued for critical fire weather conditions in areas including the Black Hills and surrounding regions, effective from 10 AM MDT on April 22, 2026, until 8 PM MDT due to high winds and low humidity.

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

This notice was issued by NOAA on April 28, 2026 and geographically references Western South Dakota and Northeastern Wyoming. 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.

For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (weather, alert, Red Flag Warning, Black Hills) map to related alerts in the same area of risk - browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.

Alert Details

A Red Flag Warning has been issued by the NWS Rapid City SD. This alert is for critical fire weather conditions and is effective from 10 AM MDT to 8 PM MDT on April 22, 2026.

Affected Areas

The warning affects the following regions: Northern Black Hills; Central Black Hills; Southern Black Hills; Fall River County Area; Northern Foot Hills; Eastern Foot Hills; Custer County Plains; Pine Ridge Area; Butte County Area; West Central Plains; Ziebach County; Haakon County Area; Badlands Area; Bennett County Area; Mellette and Todd Counties; Tripp County; Northern Campbell; Southern Campbell; Crook County Plains; Weston County Plains; and Wyoming Black Hills, covering parts of western South Dakota and northeastern Wyoming.

What You Should Do

Residents in the affected areas should prepare for critical fire weather conditions, as a combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Expected Conditions

Expected conditions include temperatures ranging from the 80s to mid 90s, minimum humidities as low as 10 percent, and southwest winds of 20 to 30 mph with gusts up to 45 mph. Scattered thunderstorms may occur, potentially bringing gusts over 50 mph and little precipitation.

Timeline

The alert is in effect from 10 AM MDT to 8 PM MDT on April 22, 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?
A Red Flag Warning has been issued for critical fire weather conditions in areas including the Black Hills and surrounding regions, effective from 10 AM MDT on April 22, 2026, until 8 PM MDT due to high winds and low humidity.
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 Western South Dakota and Northeastern Wyoming. 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.