Alert archive / Utah / Special Weather Statements in 2012

Special Weather Statement, NWS Salt Lake City, UT

July 31, 2012Kane County, Utah

NWS Salt Lake City, UT issued this special weather statement at Jul 31, 2012, 6:30 PM MDT for Kane County, Utah. It was in force for 30 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 31, 2012, 6:30 PM MDT (00:30 UTC)
Expired: Jul 31, 2012, 7:00 PM MDT
In force: 30 min
Issued by: NWS Salt Lake City, UT

County Kane County, UT

The radar

The Cedar City radar (KICX), 125 km from the middle of the area, began a volume at 00:31 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

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 0.5 hours before the alert went out and 210 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: 76 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1618 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 23 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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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.

NWS Salt Lake City, UT wrote its last area forecast discussion before this special weather statement went out at Jul 31, 4:03 PM MDT, 2 hours 27 minutes earlier.

Area forecast discussion, Jul 31, 4:03 PM MDT, 2 hours 27 minutes before

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Hazardous weather outlook, Jul 31, 6:20 AM MDT, 12 hours 10 minutes before

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In the hours before

Local storm report, Jul 31, 5:02 PM MDT, 1 hour 28 minutes before

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Local storm report, Jul 31, 5:40 PM MDT, 50 minutes before

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Special weather statement, Jul 31, 6:30 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 31, 6:30 PM MDT	Flash Flood Warning	SLC	Iron	4 hr
Jul 31, 10:51 PM MDT	Flash Flood Warning	SLC	Washington	4 hr
Aug 1, 2:30 AM MDT	Flash Flood Watch	SLC		20 hr
Aug 1, 2:51 PM MDT	Flash Flood Warning	SLC	Garfield	4 hr
Aug 1, 3:09 PM MDT	Flash Flood Warning	SLC	Garfield, Kane	6 hr
Aug 1, 4:05 PM MDT	Flash Flood Warning	SLC	Kane	4 hr
Aug 1, 5:17 PM MDT	Flash Flood Warning	SLC	Washington	4 hr
Aug 1, 5:23 PM MDT	Flash Flood Warning	SLC	Kane, Washington	4 hr
Aug 1, 5:27 PM MDT	Flash Flood Warning	SLC	Carbon, Emery	4 hr

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.