Building a Weather-Ready Nation
A potent winter storm continues to bring widespread snow to the forecast area. A low pressure center will continue to track northeast into northern Colorado and will eventually eject out into the Central Plains by Sunday morning. At this time, this has the potential to bring significant snowfall across all but northwestern Wyoming. A second system will drop southward over the area from Canada Sunday night, bringing very cold air with it. With a fresh blanket of snow over the area, very frigid temperatures are possible to start the work week next week. In addition, northerly winds will pick up for a period tonight into Sunday morning as the cold front drops south, leading to areas of blowing and drifting snow across the I-25 corridor, the Bighorn Basin, through the Owl Creeks including Wind River Pass, and across the Wind River Range including South Pass. CLICK LOOP TO ENLARGE CLICK IMAGE TO VIEW DISCUSSION & TO ENLARGE
The above image shows a loop of the Water Vapor Satellite Imagery from
early this morning. It shows a "dry slot" moving north across Sweetwater
and Fremont Counties this morning eventually filling in a bit and being
pushed off to the west by a slug of moist air (magenta and teal shades
represent more moisture-laden air).
What does this mean for you: Increased snow intensity across the areas
located underneath the areas of increased moisture for the next couple
The above image was produced by NOAA's NESDIS Satellite Analysis Division.
A lengthy discussion about the clues that the satellite imagery is giving to
the analysts about where the strongest precipitation will be over the next
few hours accompanies the image. If you would like to read it, please click
on the above image.
CLICK LOOP TO ENLARGE
CLICK IMAGE TO VIEW DISCUSSION & TO ENLARGE
A Winter Storm Warnings and Winter Weather Advisories continue through at least Sunday morning for much of the forecast area. Click on the link for more details.
For more information on the storm, take a look at the latest Multimedia Weather Briefing.
Model guidance with this storm has been fairly consistent this week and remains so today. The left picture below is the 12Z snowfall forecast from Saturday's NAM. The right picture is the preliminary snowfall forecast for Friday night through Tonight. Again, this is just a basic range as certain factors with this storm can change amounts and locations of snowfall as heavier bands set up.
CLICK LOOP TO ENLARGE Image Key: Light Purple = Less than 1 inch of snow accumulation during the 3hr period Gray = 1 to 2 inches Yellow = 2 to 3 inches Blue = 3 to 6 inches
The above animation shows the 3 hourly snow accumulation from the NAM model. The loop begins at 12Z Saturday (or 5am) and ends at 06Z Monday (or 11pm Sunday)
CLICK IMAGE TO ENLARGE
This picture shows roughly how much snow you can expect where you live.
CLICK LOOP TO ENLARGE
Light Purple = Less than 1 inch of snow accumulation during the 3hr period
Gray = 1 to 2 inches
Yellow = 2 to 3 inches
Blue = 3 to 6 inches
CLICK IMAGES TO ENLARGE
Above is the climate data from Casper, Lander and Riverton from February 2006. Please not the temperatures and precipitation/snow between the 13th and 20th. These locations received very decent snowfall amounts, followed by very frigid temperatures. This could be a scenario we see this weekend into early next week.
Snowfall reports continue to stream into the NWS office in Riverton this evening. A table with current snowfall amounts is included below. Please feel free to call in with your snowfall amounts, or utilize our social media on Facebook and/or Twitter to submit reports.
|Big Horn||Bone Springs Divide Snotel||1|
|Fremont||3 SW Lander||10-13.5|
|Fremont||9 SSE Lander||10.75|
|Fremont||6 SE Lander||10|
|Fremont||Townsend Creek Snotel||9|
|Fremont||St. Lawrence Alt Snotel||8|
|Fremont||Deer Park Snotel||7|
|Fremont||2 NE Kinnear||7|
|Fremont||South Pass Snotel||7|
|Fremont||Cold Springs Snotel||6|
|Fremont||1 E Morton||5.5|
|Fremont||Little Warm Snotel||5|
|Fremont||2 E Sweetwater Station||5|
|Fremont||Hobbs Park Snotel||4|
|Fremont||10 NNE Riverton||3.3|
|Fremont||Burroughs Creek Snotel||3|
|Hot Springs||Owl Creek Snotel||5|
|Hot Springs||8 W Thermopolis||1.5|
|Hot Springs||9 NE Thermopolis||1.4|
|Johnson||Cloud Peak Reservoir Snotel||4|
|Johnson||Bear Trap Meadow Snotel||3|
|Johnson||Hansen Sawmill Snotel||2|
|Johnson||Soldier Park Snotel||2|
|Lincoln||Spring Creek Divide Snotel||10|
|Lincoln||Box Y Ranch||7|
|Lincoln||Indian Creek Snotel||6|
|Lincoln||Salt River Summit Snotel||5|
|Lincoln||Hams Fork Snotel||5|
|Lincoln||5 SSE Smoot||4|
|Lincoln||21 NNW Kemmerer||4|
|Lincoln||Cottonwood Creek Snotel||4|
|Lincoln||Willow Creek Snotel||3|
|Lincoln||Blind Bull Summit||3|
|Lincoln||Kelley Ranger Station Snotel||3|
|Lincoln||Blind Bull Summit Snotel||3|
|Lincoln||2 SE Thayne||2|
|Natrona||Grave Spring Snotel||3|
|Natrona||Casper Mountain Snotel||3|
|Natrona||Reno Hill Snotel||2|
|Park||Timber Creek Snotel||4|
|Park||Evening Star Snotel||2|
|Sublette||Triple Peak Snotel||11|
|Sublette||Snider Basin Snotel||9|
|Sublette||East Rim Divide Snotel||4|
|Sublette||New Fork Lake Snotel||4|
|Sublette||14 NW Pinedale||4|
|Sublette||Loomis Park Snotel||3|
|Sublette||White Pine Ski Area||2.5|
|Sublette||Kendall Ranger Station Snotel||1|
|Sublette||Elkhart Park G.S. Snotel||1|
|Sublette||Gunsite Pass Snotel||1|
|Sublette||Boulder Rearing Station||0.5|
|Sweetwater||1 S Rock Springs||0.2|
|Sweetwater||1 W Rock Springs||0.1|
|Teton||Snake River Stn Snotel||2|
|Teton||3 SSW Wilson||1.7|
|Teton||Jackson Hole-Rendezvous Bowl||1|
|Teton||Granite Creek Snotel||1|
|Teton||Togwotee Pass Snotel||1|
|Teton||Snow King Ski Area||1|
|Teton||2 NE Teton Village||0.3|
|Washakie||16 SSE Ten Sleep||4|
|Washakie||27 S Ten Sleep||2|
|Washakie||5 NNW Ten Sleep||1.2|
|Washakie||Powder River Pass Snotel||1|
|Washakie||Middle Powder Snotel||1|
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