Alert archive / Wyoming / Special Weather Statements in 2014

Special Weather Statement, NWS Riverton, WY

August 6, 2014Sweetwater County, Wyoming

NWS Riverton, WY issued this special weather statement at Aug 6, 2014, 2:44 PM MDT for Sweetwater County, Wyoming. It was in force for 46 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
Aug 6, 2014, 2:44 PM MDT (20:44 UTC)
Expired
Aug 6, 2014, 3:30 PM MDT
In force
46 min
Issued by
NWS Riverton, WY

County Sweetwater County, WY

The radar

The Riverton/Lander radar (KRIW), 169 km from the middle of the area, began a volume at 20:46 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 12:00Z, 8.7 hours before the alert went out and 265 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-pSkew-T log-p diagram, Salt Lake City I, UT at 12:00Z on 2014-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 211 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 12:00Z on 2014-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -46 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
211 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
1452 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-46 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.3

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 Riverton, WY wrote its last area forecast discussion before this special weather statement went out at Aug 6, 11:42 AM MDT, 3 hours 2 minutes earlier.

Area forecast discussion, Aug 6, 11:42 AM MDT, 3 hours 2 minutes before
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Hazardous weather outlook, Aug 6, 4:00 AM MDT, 10 hours 44 minutes before
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In the hours before

Special weather statement, Aug 6, 2:40 PM MDT, 4 minutes before
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Special weather statement, Aug 6, 2:41 PM MDT, 3 minutes before
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Special weather statement, Aug 6, 2:44 PM MDT, 0 minutes before
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The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 5, 6:12 PM MDTAreal Flood AdvisoryRIWFremont3 hr
Aug 5, 6:49 PM MDTAreal Flood AdvisoryRIWFremont3 hr
Aug 5, 7:24 PM MDTSpecial Weather StatementRIWNatrona66 min
Aug 5, 8:33 PM MDTFlash Flood WarningRIWNatrona6 hr
Aug 5, 8:51 PM MDTSpecial Weather StatementRIWNatrona54 min
Aug 6, 2:40 PM MDTSpecial Weather StatementRIWJohnson50 min
Aug 6, 3:06 PM MDTSpecial Weather StatementRIWJohnson39 min
Aug 6, 3:33 PM MDTAreal Flood AdvisoryRIWJohnson117 min
Aug 6, 3:39 PM MDTSpecial Weather StatementRIWFremont51 min
Aug 6, 4:05 PM MDTSpecial Weather StatementRIWFremont40 min
Aug 6, 4:14 PM MDTSpecial Weather StatementRIWJohnson46 min
Aug 6, 4:40 PM MDTSpecial Weather StatementRIW65 min
Aug 6, 5:25 PM MDTSpecial Weather StatementRIWNatrona65 min
Aug 6, 5:51 PM MDTSpecial Weather StatementRIWNatrona39 min

Nearby

Special Weather Statements in Wyoming, 2014Every special weather statement in 2014

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.