Severe Thunderstorms and Heavy Rain in the Central Plains and Midwest; Heat Pushes into the South and East

Scattered severe thunderstorms capable of large hail in excess of two inches, strong tornadoes, and damaging wind gusts are likely across parts of the Upper Mississippi Valley and Midwest this evening. Heavy to excessive rainfall may bring a flooding threat to portions of the Central Plains to the Midwest through Thursday. The heatwave in the Central U.S. will begin to push South and East Thursday Read More >

…Wyoming January 2018 precipitation was 95 to 105 percent of average...

...Current water year precipitation is averaging 90 to 100 percent of normal across Wyoming……Mountain snowpack across Wyoming is 105 to 115 percent of median...

…Near normal (95 to 105 percent) snowmelt streamflow volumes are expected across Wyoming during the upcoming snowmelt runoff season…

…Wyoming reservoir storages remain at 115 to 125 percent of average for February…

January 2018 precipitation totals across Wyoming were 90 to 100 percent of average. Precipitation numbers varied between 140 percent of normal over the Crow/Lodgepole Creek Drainage (extreme southeast Wyoming) to near 81 percent of average over the Wind River Watershed (west central Wyoming). Current water year (October 2017 - January 2018) precipitation across Wyoming is 90 to 100 percent of average.

Mountain snowpack across Wyoming remained at 105 to 115 percent of median by early February. Snowpack "water" numbers and/or SWEs were the highest across basins in northwest to north central Wyoming—varying between 120 to 150 percent of median. SWEs across basins in south central to southeastern Wyoming were 70 to 100 percent of median.

Near normal (95 to 105 percent) snowmelt streamflow volumes are expected across Wyoming during the upcoming snowmelt runoff season. Above average (>120 percent) streamflow volumes are still forecasted across portions of the Wind, Bighorn, Shoshone, and Upper Yellowstone Watersheds. The Tongue, Lower Green, Upper North Platte, and Little Snake Basins are still expected to have below to near normal streamflow volumes during the upcoming snowmelt runoff season.

Reservoirs storages across Wyoming remained above average at 115 to 125 percent for February.

The latest Wyoming water supply outlook graphic:

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Severe Thunderstorms and Heavy Rain in the Central Plains and Midwest; Heat Pushes into the South and East

Wyoming Water Supply Outlook---February 9, 2018

…Wyoming January 2018 precipitation was 95 to 105 percent of average...