Flood Watch issued May 17 at 1:39PM MDT until May 19 at 6:00PM MDT by NWS Billings MT
* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of south central Montana, including the following areas, Bighorn Canyon, Pryor/Northern Bighorn Mountains and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...From Sunday afternoon through Monday afternoon. * IMPACTS...Excessive runoff may result in flooding of small streams, and other low-lying and flood-prone locations. Heavy rainfall may cause flash flooding and debris flows over and near the Elk Fire Burn Scar. * ADDITIONAL DETAILS... - Thunderstorms have the potential to produce locally heavy rainfall Sunday afternoon and evening. Heavy precipitation
Winter Weather Advisory issued May 17 at 1:13PM MDT until May 18 at 6:00PM MDT by NWS Missoula MT
* WHAT...Wet snow expected above 5000 feet. Likelihood of moderate impacts from 3 to 6 inches of snow is greater than 90 percent, and up to a 50 percent chance of isolated major impacts from 6 to 10 inches or more of snow. * WHERE...Marias Pass. * WHEN...From 6 AM to 6 PM MDT Sunday. * IMPACTS...For MODERATE impacts from snow, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur.
Flood Watch issued May 16 at 3:43PM MDT until May 19 at 6:00PM MDT by NWS Billings MT
* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of south central Montana, including the following areas, Bighorn Canyon, Pryor/Northern Bighorn Mountains and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...From Sunday afternoon through Monday afternoon. * IMPACTS...Excessive runoff may result in flooding of smaller creeks, streams, and other low-lying and flood-prone locations. Heavy rainfall may cause flash flooding and debris flow over and near the Elk Fire Burn Scar. * ADDITIONAL DETAILS... - Thunderstorms may produce heavy rainfall late Sunday over saturated ground. In addition, periods of
High Wind Warning issued May 15 at 3:47PM MDT until May 16 at 6:00PM MDT by NWS Rapid City SD
* WHAT...Northwest winds 35 to 45 mph with gusts up to 70 mph. * WHERE...Portions of northwestern, south central, and southwestern South Dakota. * WHEN...Until 6 PM MDT /7 PM CDT/ Friday. * IMPACTS...The high winds may damage roofs, small outbuildings, and signs. Power outages are possible. Travel could be difficult, especially for high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris.
Wind Advisory issued May 15 at 3:47PM MDT until May 16 at 6:00PM MDT by NWS Rapid City SD
* WHAT...West winds 30 to 40 mph with gusts up to 55 mph. * WHERE...Northern Oglala Lakota County, including portions of the Pine Ridge Reservation, Southern Oglala Lakota County, including portions of the Pine Ridge Reservation, Southern Foothills, Custer Co Plains, Tripp, Hermosa Foothills, and Eastern Fall River. * WHEN...Until 6 PM MDT /7 PM CDT/ Friday. * IMPACTS...Sudden wind gusts can cause drivers to lose control, especially in lightweight or high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris.
Lake Wind Advisory issued May 15 at 1:56PM MDT until May 16 at 6:00PM MDT by NWS Glasgow MT
* WHAT...Northwest winds 15 to 25 mph with gusts up to 40 mph. * WHERE...Central and Southeast Phillips, Central and Southern Valley, Garfield, McCone, and Petroleum Counties. * WHEN...Until 6 PM MDT Friday. * IMPACTS...Strong lake winds could produce rough waves which can overturn or swamp small craft.
Flood Advisory issued May 14 at 5:29AM MDT until May 14 at 6:00PM MDT by NWS Riverton WY
...The Flood Advisory continues for the following rivers in Wyoming... Pacific Creek near Moran affecting Teton County. For the Snake River Basin...including Moran...Jackson, Zenith, Below Jackson Lake Reservoir, Alpine and Flagg Ranch, elevated river levels are forecast. * WHAT...Flooding caused by rain and snowmelt continues. * WHERE...Pacific Creek near Moran. * WHEN...Until this evening. * IMPACTS...At 7.5 feet, BANKFULL STAGE. ACTION STAGE. At 8.2 feet, RECORD STAGE --- 8.20 FT (6/6/2017). At 8.5 feet, FLOOD STAGE. FLOODING OF UPSTREAM USFS CAMPGROUND ON RIGHT BANK. MINOR LOWLAND FLOODING INTENSIFIES AND BECOMES MORE WIDESPREAD. WATER REACHES THE BASE OF THE ROAD BED.
Red Flag Warning issued May 14 at 4:08AM MST until May 14 at 6:00PM MST by NWS Flagstaff AZ
MST Wed May 14 2025/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM MST /10 AM MDT/ THIS MORNING TO 6 PM MST /7 PM MDT/ THIS EVENING FOR THE WHITE MOUNTAINS NORTHWARD TO THE CHUSKA MOUNTAINS... * AFFECTED AREA...The White Mountains northward to the Chuska Mountains. * WINDS...Westerly winds 15 to 25 mph, with gusts from 35 to 40 mph. * RELATIVE HUMIDITY...As low as 11 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fires to rapidly grow in size and intensity before first responders can contain them.
Flood Advisory issued May 13 at 3:15PM MDT until May 14 at 6:00PM MDT by NWS Riverton WY
...The Flood Advisory continues for the following rivers in Wyoming... Pacific Creek near Moran affecting Teton County. For the Snake River Basin...including Moose, Jackson, Zenith, Below Jackson Lake Reservoir, Alpine, Alpine, Flagg Ranch, Jackson, Moran, Moran...elevated river levels are forecast. * WHAT...Flooding caused by rain and snowmelt continues. * WHERE...Pacific Creek near Moran. * WHEN...Until tomorrow evening. * IMPACTS...At 7.5 feet, BANKFULL STAGE. ACTION STAGE. At 8.2 feet, RECORD STAGE --- 8.20 FT (6/6/2017). At 8.5 feet, FLOOD STAGE. FLOODING OF UPSTREAM USFS CAMPGROUND ON RIGHT BANK. MINOR LOWLAND FLOODING INTENSIFIES AND BECOMES MORE WIDESPREAD. WATER REACHES THE BASE OF
Winter Weather Advisory issued May 13 at 2:47PM MDT until May 14 at 6:00PM MDT by NWS Riverton WY
* WHAT...Snow, heavy at times. Total snow accumulations 6 to 12 inches, mainly above 8000 ft. Some of the higher peaks north of HWY-14 may receive up to 20 inches. * WHERE...Absaroka Mountains. * WHEN...From 8 PM this evening to 6 PM MDT Wednesday. * IMPACTS...Travel could be difficult, especially in the backcountry.