Alert archive / Utah / Special Weather Statements in 2017

Special Weather Statement, NWS Salt Lake City, UT

July 26, 2017Tooele County, Utah

NWS Salt Lake City, UT issued this special weather statement at Jul 26, 2017, 8:15 PM MDT for Tooele County, Utah. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 26, 2017, 8:15 PM MDT (02:15 UTC)
Expired: Jul 26, 2017, 9:00 PM MDT
In force: 45 min
Issued by: NWS Salt Lake City, UT

County Tooele County, UT

The radar

The Salt Lake City radar (KMTX), 113 km from the middle of the area, began a volume at 02:18 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

Salt Lake City I, UT (KSLC), launched 00:00Z, 2.3 hours before the alert went out and 78 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: 774 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 2093 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 42 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

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

In the hours before

Special weather statement, Jul 26, 6:02 PM MDT, 2 hours 13 minutes before

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Special weather statement, Jul 26, 7:21 PM MDT, 54 minutes before

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Special weather statement, Jul 26, 7:31 PM MDT, 44 minutes before

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Local storm report, Jul 26, 7:42 PM MDT, 33 minutes before

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Special weather statement, Jul 26, 7:59 PM MDT, 16 minutes before

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Special weather statement, Jul 26, 8:15 PM MDT, 0 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 26, 6:02 PM MDT	Special Weather Statement	SLC	Tooele	58 min
Jul 26, 7:31 PM MDT	Special Weather Statement	SLC	Tooele	44 min
Jul 26, 7:59 PM MDT	Special Weather Statement	SLC	Cache	31 min
Jul 26, 8:42 PM MDT	Severe Thunderstorm Warning	SLC	Tooele, Utah	33 min
Jul 26, 8:56 PM MDT	Special Weather Statement	SLC	Davis	49 min
Jul 26, 9:14 PM MDT	Special Weather Statement	SLC	Salt Lake	46 min
Jul 26, 9:43 PM MDT	Special Weather Statement	SLC	Cache, Davis, Morgan, Rich, Salt Lake, Weber	47 min
Jul 27, 12:59 PM MDT	Flash Flood Warning	SLC	Garfield, Iron	3 hr

Nearby

Special Weather Statements in Utah, 2017 Every special weather statement in 2017

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.