Red Flag Warning issued October 9 at 8:43AM MDT until October 9 at 7:00PM MDT by NWS Riverton WY

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

expired · active · official-source

* IMPACTS: Low humidity...unseasonably warm temperatures...and strong gusty wind could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...289. In North Central WY Fire Zone....281. In Southwest WY Fire Zone....279. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: Southwest 15 to 25 mph with gusts 35 to 45 mph. * HUMIDITY: As low as 10 to 15 percent. * TEMPERATURES: Highs in the mid to upper 70s. A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

Event time

Oct 9, 2026, 2:43 PM UTC

Source last updated

Oct 9, 2026, 2:43 PM UTC

Retrieved by TradePilot

Oct 10, 2026, 12:38 AM UTC

Provider

NWS — active weather alerts (Storm)

Location

WY, US

Severity

Severe

area

Sweetwater County/Rock Springs BLM/Flaming Gorge NRA; Natrona County/Casper BLM; Johnson County/Casper BLM; Granite/Green/Ferris/Rattlesnake Mountains

event

Red Flag Warning

onset

2026-10-09T12:00:00-06:00

states

["WY"]

urgency

Expected

certainty

Likely

effective

2026-10-09T08:43:00-06:00

message id

urn:oid:2.49.0.1.840.0.e3638829e1b0c0f4dd8b3c435bab0615e2113d07.001.1

references

["urn:oid:2.49.0.1.840.0.9a3f3cc929f9dd27e54319948bb3435478901c7c.002.1"]

instruction

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

message type

Update

freshness minutes

60

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

Report a correction · Related news · Fire information · Clips