Alert archive / Wyoming / Freeze Warnings in 2014

Freeze Warning 2, NWS Riverton, WY

June 14, 20145 counties in Wyoming

NWS Riverton, WY issued this freeze warning at Jun 14, 2014, 2:48 AM MDT for 5 counties in Wyoming. It took effect at Jun 15, 2014, 12:00 AM MDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 14, 2014, 2:48 AM MDT (08:48 UTC)
In effect from
Jun 15, 2014, 12:00 AM MDT
Expired
Jun 15, 2014, 9:00 AM MDT
In force
9 hr
Issued by
NWS Riverton, WY

Counties Fremont County, WY, Lincoln County, WY, Sublette County, WY, Sweetwater County, WY, Teton County, WY

The radar

The Riverton/Lander radar (KRIW), 109 km from the middle of the area, began a volume at 08:52 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, 8.8 hours before the alert went out and 282 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 00:00Z on 2014-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2014-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -104 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4245 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
-104 m²/s²
0-3 km storm-relative helicity
-52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 7:20 PM MDTSpecial Weather StatementRIWJohnson25 min
Jun 13, 7:44 PM MDTSpecial Weather StatementRIWJohnson46 min
Jun 14, 1:02 AM MDTSpecial Weather StatementRIWNatrona43 min
Jun 14, 1:08 AM MDTAreal Flood AdvisoryRIWNatrona4 hr
Jun 14, 2:58 PM MDTSpecial Weather StatementRIWJohnson47 min
Jun 14, 4:29 PM MDTSpecial Weather StatementRIW31 min
Jun 14, 4:30 PM MDTSpecial Weather StatementRIW30 min

Nearby

Freeze Warnings in Wyoming, 2014Every freeze warning 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.