Red Flag Warning issued October 17 at 6:31PM MDT until October 17 at 7:00PM MDT by NWS Cheyenne WY

Official severe-weather alerts, warning areas, and disaster updates.

expired · active · official-source

The relative humidity has increased above critical levels. Hence, the Red Flag Warning will be allowed to expire on time at 7 PM MDT.

Event time: Oct 18, 2026, 12:31 AM UTC
Source last updated: Oct 18, 2026, 12:31 AM UTC
Current version retrieved: Oct 18, 2026, 12:33 AM UTC
Provider: NWS — active weather alerts (Storm)
Location: WY, US
Severity: Severe
area: North Snowy Range Foothills
event: Red Flag Warning
onset: 2026-10-17T18:31:00-06:00
states: ["WY"]
urgency: Expected
certainty: Likely
effective: 2026-10-17T18:31:00-06:00
message id: urn:oid:2.49.0.1.840.0.23f72a77f40db240edc8558d6c0cca26efaca68d.001.1
references: ["urn:oid:2.49.0.1.840.0.7393d1d6883c9f431c89ffd4081c3f8b02945385.001.1"]
message type: Update
freshness minutes: 60

Read the official source

Source use policy · US government work (17 U.S.C. 105)

Update history (2 recent revisions)

Oct 18, 2026, 12:33 AM UTC
Oct 17, 2026, 4:34 PM UTC

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