Alert archive / Utah / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 25, NWS Salt Lake City, UT

July 17, 2022Box Elder County, Tooele County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 17, 2022, 4:58 PM MDT for Box Elder County, Tooele County, Utah. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 17, 2022, 4:58 PM MDT (22:58 UTC)
Expired: Jul 17, 2022, 5:30 PM MDT
In force: 32 min
Issued by: NWS Salt Lake City, UT
Area: Storm-based polygon
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Box Elder County, UT, Tooele County, UT

The radar

The Salt Lake City radar (KMTX), 63 km from the middle of the area, began a volume at 23:02 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Boise Airport, ID (KBOI), launched 12:00Z, 11.0 hours before the alert went out and 384 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3207 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -92 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Salt Lake City, UT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 17, 4:24 PM MDT, 34 minutes earlier.

Area forecast discussion, Jul 17, 4:24 PM MDT, 34 minutes before

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In the hours before

Local storm report, Jul 17, 4:26 PM MDT, 32 minutes before

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Local storm report, Jul 17, 4:28 PM MDT, 30 minutes before

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Local storm report, Jul 17, 4:33 PM MDT, 25 minutes before

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Special weather statement, Jul 17, 4:39 PM MDT, 19 minutes before

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Special weather statement, Jul 17, 4:46 PM MDT, 12 minutes before

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Local storm report, Jul 17, 4:51 PM MDT, 7 minutes before

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The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 17, 2:59 PM MDT	Special Weather Statement	SLC		31 min
Jul 17, 3:10 PM MDT	Special Weather Statement	SLC		50 min
Jul 17, 3:47 PM MDT	Special Weather Statement	SLC	Juab, Tooele	43 min
Jul 17, 4:05 PM MDT	Special Weather Statement	SLC	Millard	25 min
Jul 17, 4:13 PM MDT	Severe Thunderstorm Warning	SLC	Box Elder, Tooele	47 min
Jul 17, 4:17 PM MDT	Severe Thunderstorm Warning	SLC	Tooele	43 min
Jul 17, 4:39 PM MDT	Special Weather Statement	SLC	Juab	51 min
Jul 17, 4:46 PM MDT	Special Weather Statement	SLC	Millard	29 min
Jul 17, 5:05 PM MDT	Special Weather Statement	SLC	Davis	40 min
Jul 17, 5:26 PM MDT	Special Weather Statement	SLC	Salt Lake	34 min
Jul 17, 5:42 PM MDT	Severe Thunderstorm Warning	SLC	Davis, Salt Lake, Tooele	33 min
Jul 17, 5:57 PM MDT	Special Weather Statement	SLC	Davis, Weber	33 min

Nearby

Severe Thunderstorm Warnings in Utah, 2022 Every severe thunderstorm warning in 2022

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.