Alert archive / Wyoming / Winter Storm Warnings in 2024

Winter Storm Warning 2, NWS Riverton, WY

January 11, 20245 counties in Wyoming

NWS Riverton, WY issued this winter storm warning at Jan 11, 2024, 3:43 AM MST for 5 counties in Wyoming. It took effect at Jan 11, 2024, 5:00 PM MST. It was in force for 36 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
Jan 11, 2024, 3:43 AM MST (10:43 UTC)
In effect from
Jan 11, 2024, 5:00 PM MST
Expired
Jan 13, 2024, 5:00 AM MST
In force
36 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 10:47 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, 10.7 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 2024-01-11Temperature 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 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 2024-01-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 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
857 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
173 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
Jan 10, 7:43 PM MSTWinter Storm WatchRIWFremont, Hot Springs, Lincoln, Park, Sublette, Teton8 hr
Jan 11, 3:43 AM MSTBlizzard WarningRIWLincoln, Teton37 hr
Jan 11, 3:43 AM MSTWinter Weather AdvisoryRIWFremont, Hot Springs, Lincoln, Park, Sublette, Sweetwater and 1 more49 hr
Jan 11, 1:15 PM MSTWind Chill WarningRIWBig Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 1 more70 hr
Jan 11, 1:15 PM MSTWind Chill AdvisoryRIWFremont, Hot Springs, Natrona, Park, Sublette, Sweetwater70 hr

Nearby

Winter Storm Warnings in Wyoming, 2024Every winter storm warning in 2024

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.