Alert archive / Utah / Special Weather Statements in 2012

Special Weather Statement, NWS Salt Lake City, UT

July 24, 2012Washington County, Utah

NWS Salt Lake City, UT issued this special weather statement at Jul 24, 2012, 1:34 PM MDT for Washington County, Utah. It was in force for 41 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 24, 2012, 1:34 PM MDT (19:34 UTC)
Expired: Jul 24, 2012, 2:15 PM MDT
In force: 41 min
Issued by: NWS Salt Lake City, UT

County Washington County, UT

The radar

The Cedar City radar (KICX), 71 km from the middle of the area, began a volume at 19:35 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

Las Vegas, NV (KVEF), launched 12:00Z, 7.6 hours before the alert went out and 206 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: 2422 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 24, 8:58 AM MDT	Flash Flood Warning	SLC	Washington	6 hr
Jul 24, 12:56 PM MDT	Flash Flood Warning	SLC	Garfield	3 hr
Jul 24, 1:28 PM MDT	Flash Flood Warning	SLC	Wayne	4 hr
Jul 24, 1:45 PM MDT	Severe Thunderstorm Warning	SLC	Washington	18 min
Jul 24, 2:44 PM MDT	Flash Flood Warning	SLC	Washington	6 hr
Jul 24, 3:18 PM MDT	Special Weather Statement	SLC	Iron	42 min

Nearby

Special Weather Statements in Utah, 2012 Every special weather statement in 2012

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.