Severe Thunderstorm Warning for Box Elder and Tooele Counties, UT
This alert is no longer in effect.
NOAA issued it on May 21, 2026, 3 months 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 Salt Lake City has issued a Severe Thunderstorm Warning for southwestern Box Elder County and central Tooele County until 2:00 PM MDT.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Northern Utah
- Issued
- May 21, 2026
- Issuing authority
- NWS Salt Lake City UT
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 months ago; use the issuing agency's live warning service for current conditions in Northern Utah.
Alert Details
A Severe Thunderstorm Warning was issued by the National Weather Service in Salt Lake City on May 13 at 1:19 PM MDT. The alert is effective immediately and expires at 2:00 PM MDT.
Affected Areas
The warning covers southwestern Box Elder County and central Tooele County in northern Utah. Impacted locations include Dugway Proving Ground Test Range, Utah Test and Training Range South, Delle, Knolls, Utah Test and Training Range North, Clive, and Bonneville Salt Flats. The alert includes Interstate 80 between mile markers 14 and 76.
What You Should Do
Residents should move to an interior room on the lowest floor of a building for protection.
Expected Conditions
Elevated thunderstorms are producing gusty and erratic outflow winds with radar-indicated 60 mph wind gusts. Hail up to 0.75 inches is possible. Impacts include damage to roofs, siding, and trees, along with difficult travel for high-profile vehicles on I-80 due to strong crosswinds.
Timeline
The warning is in effect from 1:19 PM MDT until 2:00 PM MDT on May 13, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
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 (1,069 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to May 21, 2026.
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Common questions about this NWS weather alert.