Alert archive / Wyoming / Snow Advisories in 2008

Snow Advisory 20, NWS Salt Lake City, UT

March 29, 2008Uinta County, Wyoming

NWS Salt Lake City, UT issued this snow advisory at Mar 29, 2008, 2:56 PM MDT for Uinta County, Wyoming. It took effect at Mar 30, 2008, 12:00 AM MDT. It was in force for 31 hr.

The area

The counties it named.

The facts

Issued
Mar 29, 2008, 2:56 PM MDT (20:56 UTC)
In effect from
Mar 30, 2008, 12:00 AM MDT
Expired
Mar 31, 2008, 6:45 AM MDT
In force
31 hr
Issued by
NWS Salt Lake City, UT

County Uinta County, WY

The radar

The Salt Lake City radar (KMTX), 159 km from the middle of the area, began a volume at 20:56 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

Riverton, WY (KRIW), launched 12:00Z, 8.9 hours before the alert went out and 266 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, Riverton, WY at 12:00Z on 2008-03-29Temperature 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, Riverton, WY at 12:00Z on 2008-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 161 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
1557 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
161 m²/s²
0-3 km storm-relative helicity
219 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 29, 4:02 AM MDTWinter Storm WatchSLC11 hr
Mar 29, 2:56 PM MDTHeavy Snow WarningSLC42 hr

Nearby

Snow Advisories in Wyoming, 2008Snow Advisories in Utah, 2008Every snow advisory in 2008

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.