Severe Thunderstorm Warning for Fremont and Sweetwater Counties, WY
This alert is no longer in effect.
NOAA issued it on July 27, 2026, 3 weeks ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Riverton has issued a Severe Thunderstorm Warning for southwestern Fremont County and central Sweetwater County in Wyoming until 8:30 PM MDT on June 20, 2026.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Central and South Central Wyoming
- Issued
- July 27, 2026
- Issuing authority
- NWS Riverton WY
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 3 weeks ago; use the issuing agency's live warning service for current conditions in Central and South Central Wyoming.
Alert Details
Severe Thunderstorm Warning issued by NWS Riverton WY. Effective from 2026-06-20T19:43:00-06:00 until 2026-06-20T20:30:00-06:00. Urgency: Immediate. Certainty: Observed. Severity: Severe.
Affected Areas
Southwestern Fremont County in central Wyoming and central Sweetwater County in south central Wyoming. The storm was located near Worthen Meadows Reservoir (12 miles west of Lander) and will affect Sinks Canyon State Park around 750 PM MDT, Lander around 755 PM MDT, Milford around 800 PM MDT, Hudson, and Interstate 80 between mile markers 112 and 150.
What You Should Do
For your protection move to an interior room on the lowest floor of a building.
Expected Conditions
60 mph wind gusts and hail up to 0.75 inches. Storm moving east at 35 mph. Expect damage to roofs, siding, and trees.
Timeline
Alert effective immediately on June 20 at 7:43 PM MDT and expires at 8:30 PM MDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (917 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 27, 2026.
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