(Riverton, Wyo.) – The National Weather Service Forecast Office in Riverton said Tuesday that several dry cold fronts will bring cooler, but still above normal, temperatures to the region today, after a day in which most areas recorded, or tied, their record high temperature for the day.
Riverton set a new record high of 89 degrees, topping the previous high of 88 that was set in 2007 and Lander tied it’s all time record high for the day at 86, which occurred in 2001 and 1988. Rock Springs fell just three degrees short of its record high of 82 degrees set in 1960 and Casper was six degrees short of its record high of 87, also set in 1960.
Most areas will see temperatures 5-10 degrees cooler today than what was experienced on Monday. Forecasters said the recent warmth could create rapid mountain snow melt, and cause moderate to significant rises of area rivers and streams. Post frontal winds will be quite breezy at times today across much of the forecast area and weather watchers may expect the breezy winds to diminish slightly tonight.
Moderate to high potential for flooding associated with rapid snowmelt is expected across the various headwater streams along the Powder River drainage as well as along the eastern portions of the Big Horn Basin. Streams with the highest potential for flooding include the Middle Fork of the Powder River (Kaycee), Medicine Lodge Creek, Ten Sleep Creek and Clear Creek (Buffalo). All other headwater basins across Wyoming can expect a generally low potential for flooding due to springtime snowmelt.
THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.
DAY ONE…TODAY AND TONIGHT
RECORD HIGH TEMPERATURES WILL CAUSE RAPID MELTING OF THE MOUNTAIN SNOWPACK. THIS WILL RESULT IN MODERATE TO PERHAPS SIGNIFICANT RISES ON AREA RIVERS AND STREAMS EARLY TO MIDDLE OF NEXT WEEK.
WEDNESDAY THROUGH MONDAY
ISOLATED MAINLY MOUNTAIN THUNDERSTORMS ARE POSSIBLE WEDNESDAY.
SCATTERED THUNDERSTORMS ARE POSSIBLE THURSDAY AFTERNOON AND NIGHT IN NORTHWEST WYOMING.
ON FRIDAY…WIDELY SCATTERED TO SCATTERED THUNDERSTORMS WILL COVER MUCH OF CENTRAL AND WESTERN WYOMING. A FEW OF THESE STORMS COULD BE QUITE STRONG.
SATURDAY…ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE ACROSS MOST OF THE AREA.