148 first-hand accounts of flood events in Wyoming, ranked by impact. Each is a NOAA-written narrative of the moment.
Rapid melt of a strong late season snowpack resulted in high water levels along many rivers and streams in Sublette County. Certain sections of the Green and New Fork rivers flooded lowlands and in some cases necessitated the sandbagging of homes.
Read the full account →The first extended warm spell of the season produced an active period of snowmelt from an historic snowpack in the western Bighorn Mountains. As a result, waterways in and near the foothills of the Bighorn Mountains rose rapidly causing flooding in Big Horn and Washakie counties.
Read the full account →A strong upper level low stalled west of Wyoming. The resultant upslope flow east of the Continental Divide generated copious rainfall amounts across the lower elevations with accumulating snowfall in the mountains.
Read the full account →On the weekend of June 11th and 12th, a stationary front set up across northwestern Wyoming. On June 12th into June 13th an atmospheric river fed moisture into a powerful jet steam along the front and brought an extended period of moderate rain along with occasional heavy rain…
Read the full account →On the weekend of June 11th and 12th, a stationary front set up across northwestern Wyoming. On June 12th into June 13th an atmospheric river fed moisture into a powerful jet steam along the front and brought an extended period of moderate rain along with occasional heavy rain…
Read the full account →On the weekend of June 11th and 12th, a stationary front set up across northwestern Wyoming. On June 12th into June 13th an atmospheric river fed moisture into a powerful jet steam along the front and brought an extended period of moderate rain along with occasional heavy rain…
Read the full account →On the weekend of June 11th and 12th, a stationary front set up across northwestern Wyoming. On June 12th into June 13th an atmospheric river fed moisture into a powerful jet steam along the front and brought an extended period of moderate rain along with occasional heavy rain…
Read the full account →A second day of severe weather occurred across central Wyoming on August 9. An unstable and moist atmosphere helped to generate very heavy rain, strong wind gusts, and hail up to nickel size.
Read the full account →The warmest temperatures of the summer season produced snowmelt runoff in the drainages of the western Bighorn Mountains. Creeks and streams in Big Horn and Washakie counties quickly rose in response to the increased runoff. The flooding subsided during the morning of July 1.
Read the full account →Moisture and instability ahead of an upper level low allowed for afternoon thunderstorms to develop across portions of central and northern Wyoming. Many of the storms were moving south to north within the counter-clockwise rotation of the low.
Read the full account →Flash flooding occurred across parts of Albany County Wyoming, including the city of Laramie and the eastern part of the Mullen Burn Scar in southwest Albany County the afternoon of 13 August. Slow moving monsoonal thunderstorms impacted southern Albany County.
Read the full account →Flash flooding occurred across parts of Albany County Wyoming, including the city of Laramie and the eastern part of the Mullen Burn Scar in southwest Albany County the afternoon of 13 August. Slow moving monsoonal thunderstorms impacted southern Albany County.
Read the full account →Flash flooding occurred across parts of Albany County Wyoming, including the city of Laramie and the eastern part of the Mullen Burn Scar in southwest Albany County the afternoon of 13 August. Slow moving monsoonal thunderstorms impacted southern Albany County.
Read the full account →Heavy rainfall in association with a line of thunderstorms produced two mud and rock slides in Snake River Canyon. Rainfall was estimated at 0.75 to 1.00 inches in less than 30 minutes. Both slides occurred between mile markers 118 and 121 on U.S.
Read the full account →Heavy rainfall in Hoback Canyon caused at least nine mud and rock slides which subsequently closed U.S. Highway 191 around the Sublette-Teton county line. Crews worked for about seven hours to clear the slides which averaged three to five feet deep.
Read the full account →Heavy rainfall in Hoback Canyon caused at least nine mud and rock slides which subsequently closed U.S. Highway 191 around the Sublette-Teton county line. Crews worked for about seven hours to clear the slides which averaged three to five feet deep.
Read the full account →Strong and severe thunderstorms spread south along the eastern slopes of the Bighorn Mountains during the afternoon and early evening. These storms produced long periods of hail and very heavy rain.
Read the full account →Strong and severe thunderstorms spread south along the eastern slopes of the Bighorn Mountains during the afternoon and early evening. These storms produced long periods of hail and very heavy rain.
Read the full account →Scattered to numerous thunderstorms developed along the Laramie Range during the mid afternoon hours on 6/21. A couple of storms became strong to marginally severe, producing quarter sized hail and wind gusts up to 60 MPH to the south of Chugwater along the Platte and Laramie…
Read the full account →Flash flooding occurred in Black Canyon within the Oil Creek Fire burn area northwest of Newcastle. Three-quarters of an inch of rain fell in 20 minutes; the runoff carried debris several miles down the canyon.
Read the full account →An ice jam on Flat Creek in the southwest part of Jackson caused localized flooding of structures in two areas. The creek was flooded from the Snow King Avenue bridge to High School Road. Several homes had basement and garage flooding near Crabtree Lane and Shelby Lane.
Read the full account →Southeast low level wind flow increased ahead of a low pressure system over northern Colorado the afternoon of May 18 2010. A strong low level southeast jet combined with dynamics of the low to create a favorable environment for severe thunderstorms.
Read the full account →A storm that developed northwest of Dubois traveled along the Wind River Valley and walloped central Fremont County with hail and heavy rain. Hail up to several inches deep accumulated on U.S. Highway 26 northwest of Riverton near Kinnear.
Read the full account →Heavy rainfall over portions of the Mullen Burn Scar with estimated rainfall of two to three inches. Subsequent mudslide and debris flow led to a road washout near Highway 230.
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