Wyoming Spring Runoff 2020 Flood Potential--issued April 8th

Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

SYNOPSIS

Early April snowpack and/or SWEs were above average (105 to 115% of median) across almost all major basins in Wyoming.

Above average snow depths across far western Wyoming.

Average soil moisture percentages across basins in northeastern Wyoming and portions of the Wind River Basin; Below average soil moisture percentages across southern Wyoming.

Widespread pine bark beetle damage (2010 to 2018) across the Upper North Platte, Little Snake, Laramie, and Wind River Basins.

No significant precipitation trends during the spring runoff season (May – July). Above average temperatures are expected across central to western Wyoming during the runoff season.

HIGHLIGHTS

Low to Moderate potential for flooding due to spring snowmelt runoff across portions of the Salt River Basin (far western Wyoming) and portions of the Little Laramie River Basin. All other headwater basins will generally have a Low potential for snowmelt runoff flooding.

Latest Wyoming Spring Flood Potential graphic: