Alert archive / Wyoming / Winter Storm Warnings in 2008

Winter Storm Warning 15, NWS Salt Lake City, UT

December 12, 2008Uinta County, Wyoming

NWS Salt Lake City, UT issued this winter storm warning at Dec 12, 2008, 2:38 PM MST for Uinta County, Wyoming. It took effect at Dec 13, 2008, 3:00 AM MST. It was in force for 37 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
Dec 12, 2008, 2:38 PM MST (21:38 UTC)
In effect from
Dec 13, 2008, 3:00 AM MST
Expired
Dec 14, 2008, 4:00 PM MST
In force
37 hr
Issued by
NWS Salt Lake City, UT

County Uinta County, WY

The nearest sounding before it

Grand Junction, CO (KGJT), launched 12:00Z, 9.6 hours before the alert went out and 296 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, Grand Junction, CO at 12:00Z on 2008-12-12Temperature 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, Grand Junction, CO at 12:00Z on 2008-12-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
1502 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm warning 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 winter storm warning went out at Dec 12, 10:20 AM MST, 4 hours 18 minutes earlier.

Area forecast discussion, Dec 12, 10:20 AM MST, 4 hours 18 minutes before
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Hazardous weather outlook, Dec 12, 4:45 AM MST, 9 hours 53 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
445 AM MST FRI DEC 12 2008

UTZ001>016-019>021-517-518-WYZ021-131300-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS-
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS-
WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL-
SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS-
SOUTHERN MOUNTAINS-SOUTHWEST WYOMING-
445 AM MST FRI DEC 12 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

A WEAK STORM SYSTEM WILL BRING A CHANCE OF SNOW TO THE HIGHER
TERRAIN OF NORTHERN AND CENTRAL UTAH TODAY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A VERY COLD AND MOIST PATTERN IS EXPECTED TO DEVELOP ACROSS THE
REGION BEGINNING SATURDAY...AND CONTINUING THROUGH MUCH OF NEXT
WEEK. THERE IS THE POTENTIAL FOR HEAVY SNOW ACROSS MUCH OF UTAH
FROM LATE FRIDAY NIGHT THROUGH SATURDAY NIGHT AS A VIGOROUS WINTER
STORM MOVES THROUGH THE REGION. THIS STORM WILL BE ACCOMPANIED BY
STRONG WINDS WHICH WILL RESULT IN AREAS OF BLOWING SNOW...AND
POSSIBLY LOCAL NEAR BLIZZARD CONDITIONS. TRAVEL CONDITIONS MAY BE
HAZARDOUS AS THIS STORM MOVES THROUGH THE REGION. THIS SYSTEM WILL
ALSO BRING MUCH COLDER TEMPERATURES TO UTAH AND SOUTHWEST WYOMING.

THERE IS THE THREAT OF ADDITIONAL SNOW SHOWERS ACROSS MUCH OF THE
STATE BEHIND THIS SYSTEM THROUGH THE EARLY PORTION OF NEXT WEEK AS
SEVERAL FAST MOVING SYSTEMS SWEEP THROUGH THE REGION. ANOTHER
SIGNIFICANT STORM APPEARS POSSIBLE DURING THE MIDDLE OF NEXT WEEK
WITH THE PRIMARY IMPACT EXPECTED TO BE ACROSS SOUTHERN UTAH AT
THIS TIME. THIS STORM HAS THE POTENTIAL BE BRING ADDITIONAL HEAVY
PRECIPITATION TO THE STATE...PARTICULARLY SOUTHERN UTAH.
HOWEVER...IT IS POSSIBLE THAT TEMPERATURES WILL WARM ENOUGH FOR
SOME OF THE VALLEY PRECIPITATION TO BE IN THE FORM OF RAIN.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

Nearby

Winter Storm Warnings in Wyoming, 2008Winter Storm Warnings in Utah, 2008Every winter storm warning 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.