Alert archive / Utah / Special Weather Statements in 2011

Special Weather Statement, NWS Salt Lake City, UT

July 18, 2011Kane County, Utah

NWS Salt Lake City, UT issued this special weather statement at Jul 18, 2011, 6:27 PM MDT for Kane County, Utah. It was in force for 48 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 18, 2011, 6:27 PM MDT (00:27 UTC)
Expired: Jul 18, 2011, 7:15 PM MDT
In force: 48 min
Issued by: NWS Salt Lake City, UT

County Kane County, UT

The radar

The Cedar City radar (KICX), 129 km from the middle of the area, began a volume at 00:30 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 00:00Z, 0.5 hours before the alert went out and 329 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: 11 J/kg
Mixed-layer CIN: -245 J/kg
Mixed-layer LCL: 2727 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 44 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 18, 4:30 PM MDT, 1 hour 57 minutes earlier.

Area forecast discussion, Jul 18, 4:30 PM MDT, 1 hour 57 minutes before

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Hazardous weather outlook, Jul 18, 2:56 AM MDT, 15 hours 31 minutes before

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In the hours before

Special weather statement, Jul 18, 4:53 PM MDT, 1 hour 34 minutes before

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Special weather statement, Jul 18, 5:47 PM MDT, 40 minutes before

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Special weather statement, Jul 18, 6:27 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 19, 2:27 AM MDT	Red Flag Warning	SLC		20 hr
Jul 19, 2:45 AM MDT	Wind Advisory	SLC		18 hr
Jul 19, 12:33 PM MDT	Flash Flood Warning	SLC	Wayne	3 hr
Jul 19, 1:46 PM MDT	Flash Flood Warning	SLC	Carbon	3 hr
Jul 19, 3:17 PM MDT	Special Weather Statement	SLC	Salt Lake	43 min
Jul 19, 3:31 PM MDT	Areal Flood Advisory	SLC	Salt Lake	59 min
Jul 19, 4:53 PM MDT	Special Weather Statement	SLC	Uinta	37 min

Nearby

Special Weather Statements in Utah, 2011 Every special weather statement in 2011

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.