Alert archive / Utah / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 45, NWS Salt Lake City, UT

July 19, 2023Tooele County, Utah County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 19, 2023, 5:36 PM MDT for Tooele County, Utah County, Utah. It was in force for 54 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 19, 2023, 5:36 PM MDT (23:36 UTC)
Expired: Jul 19, 2023, 6:30 PM MDT
In force: 54 min
Issued by: NWS Salt Lake City, UT
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Tooele County, UT, Utah County, UT

The radar

The Salt Lake City radar (KMTX), 109 km from the middle of the area, began a volume at 23:37 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

Grand Junction, CO (KGJT), launched 12:00Z, 11.6 hours before the alert went out and 357 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: 8 J/kg
Mixed-layer CIN: -238 J/kg
Mixed-layer LCL: 2312 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 70 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 19, 3:24 PM MDT, 2 hours 12 minutes earlier.

Area forecast discussion, Jul 19, 3:24 PM MDT, 2 hours 12 minutes before

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In the hours before

Local storm report, Jul 19, 4:01 PM MDT, 1 hour 35 minutes before

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Special weather statement, Jul 19, 4:15 PM MDT, 1 hour 21 minutes before

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Special weather statement, Jul 19, 4:55 PM MDT, 41 minutes before

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Special weather statement, Jul 19, 5:04 PM MDT, 32 minutes before

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Special weather statement, Jul 19, 5:09 PM MDT, 27 minutes before

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Special weather statement, Jul 19, 5:16 PM MDT, 20 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 18, 6:41 PM MDT	Special Weather Statement	SLC	Box Elder	34 min
Jul 19, 2:59 PM MDT	Special Weather Statement	SLC	Emery	31 min
Jul 19, 3:13 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Wayne	3 hr
Jul 19, 3:18 PM MDT	Special Weather Statement	SLC	Millard	27 min
Jul 19, 3:28 PM MDT	Severe Thunderstorm Warning	SLC	Millard	47 min
Jul 19, 4:15 PM MDT	Special Weather Statement	SLC	Millard	30 min
Jul 19, 4:55 PM MDT	Special Weather Statement	SLC		35 min
Jul 19, 5:04 PM MDT	Special Weather Statement	SLC	Tooele	41 min
Jul 19, 5:09 PM MDT	Special Weather Statement	SLC	Emery	51 min
Jul 19, 5:16 PM MDT	Special Weather Statement	SLC	Salt Lake	29 min
Jul 19, 5:26 PM MDT	Severe Thunderstorm Warning	SLC	Salt Lake, Tooele	34 min
Jul 19, 5:46 PM MDT	Special Weather Statement	SLC	Emery	44 min

Nearby

Severe Thunderstorm Warnings in Utah, 2023 Every severe thunderstorm warning in 2023

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.