Alert archive / Wyoming / Winter Storm Warnings in 2008

Winter Storm Warning 9, NWS Riverton, WY

May 1, 20085 counties in Wyoming

NWS Riverton, WY issued this winter storm warning at May 1, 2008, 12:05 PM MDT for 5 counties in Wyoming. It took effect at May 1, 2008, 6:00 PM MDT. It was in force for 18 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
May 1, 2008, 12:05 PM MDT (18:05 UTC)
In effect from
May 1, 2008, 6:00 PM MDT
Expired
May 2, 2008, 12:00 PM MDT
In force
18 hr
Issued by
NWS Riverton, WY

Counties Big Horn County, WY, Fremont County, WY, Johnson County, WY, Natrona County, WY, Washakie County, WY

The radar

The Riverton/Lander radar (KRIW), 103 km from the middle of the area, began a volume at 18:05 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.

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 Riverton, WY wrote its last area forecast discussion before this winter storm warning went out at May 1, 11:00 AM MDT, 1 hour 5 minutes earlier.

Area forecast discussion, May 1, 11:00 AM MDT, 1 hour 5 minutes before
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Hazardous weather outlook, May 1, 5:01 AM MDT, 7 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
501 AM MDT THU MAY 1 2008

WYZ001>020-022>030-021101-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
501 AM MDT THU MAY 1 2008

...SNOW ADVISORY FOR PORTIONS OF CENTRAL WYOMING FOR THIS MORNING...

...WINTER STORM WATCH FOR EAST CENTRAL WYOMING FOR THURSDAY
EVENING THROUGH FRIDAY MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

SNOW WILL ACCUMULATE 6 TO 12 INCHES TONIGHT THROUGH THIS MORNING
ACROSS THE EAST SLOPE OF THE WIND RIVER MOUNTAINS. 3 TO 6 INCHES OF
SNOW WILL FALL ACROSS THE GREEN AND GRANITE MOUNTAINS THIS MORNING
AS WELL.

THERE IS THE POTENTIAL FOR A POWERFUL SPRING SNOW STORM ACROSS
NATRONA AND JOHNSON COUNTIES AS WELL AS THE BIG HORN MOUNTAINS
FROM THIS EVENING THROUGH THE OVERNIGHT HOURS. THIS STORM MAY IMPACT
THE CITIES OF CASPER AND BUFFALO. THERE IS THE POTENTIAL FOR 10 TO 15
INCHES OF SNOW TO FALL ACROSS THE BIG HORN MOUNTAINS...5 TO 8 INCHES
AT THE LOWER ELEVATIONS OF JOHNSON COUNTY...4 TO 6 INCHES AT THE
LOWER ELEVATIONS OF NATRONA COUNTY INCLUDING THE CITY OF CASPER AND 6
TO 10 INCHES OF SNOW TO FALL ON CASPER MOUNTAIN. IN ADDITION...
STRONG NORTH WINDS MAY CREATE CONSIDERABLE BLOWING AND DRIFTING
SNOW WITH THIS POTENTIAL EVENT. NORTH WINDS OF 30 TO 40 MPH WITH
GUSTS TO 50 MPH ARE POSSIBLE AT THE LOWER ELEVATIONS OF JOHNSON
COUNTY INCLUDING THE CITY OF BUFFALO.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT SNOWFALL AMOUNTS TODAY AND TONIGHT.

TEAM RIVERTON

Nearby

Winter Storm Warnings in Wyoming, 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; radar from the NEXRAD Level II archive.