National Weather Service United States Department of Commerce

Snow in the Rockies and High Plains

A surge of cold air will bring rapidly falling temperatures and snow to spread across the Rockies, Plains and Middle Mississippi Valley into the Great Lakes over the next couple of days. Heavy showers and thunderstorms will continue to bring a threat of flash and urban flooding, hail, and strong/gusty winds to the Florida peninsula into midweek. Read More >

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Last Map Update: Sun, Apr. 18, 2021 at 11:55:23 pm MDT

National Weather Service Boise, IDNational Weather Service Pocatello, IDNational Weather Service Western and Central Wyoming
National Weather Service Elko, NVZoom

National Weather Service Grand Junction, CO
National Weather Service Las Vegas, NVNational Weather Service Flagstaff, AZNational Weather Service Albuquerque, NM

A storm system will scrape by northern Utah on Monday, bringing a round of strong winds to a large majority of Utah and southwest Wyoming during the afternoon hours. Strong sustained northerly winds of 15 to 20 miles per hour are anticipated, with gusts reaching up to 40 miles per hour. A Wind Advisory has been issued for Castle Country, the San Rafael Swell, and western Uinta Basin. Wind gusts of up to 50 miles per hour will be possible in these areas. Strong crosswinds on east-west oriented roadways may create difficult driving conditions, especially for high profile vehicles. Areas of blowing dust may also arise and bring reductions in visibility, contributing to more hazardous driving conditions. Additionally, with low afternoon relative humidity values across southern Utah combined with the high wind speeds, critical fire weather conditions are expected during the afternoon hours on Monday. A Red Flag Warning has been issued for much of southern Utah from noon to 9PM Monday.
A colder airmass will arrive after Monday’s storm system and bring unseasonably cold temperatures to portions of northern Utah. These colder temperatures will be a particular problem for areas that have already begun their growing season, as the cold morning temperatures could kill crops or any other sensitive vegetation. A hard freeze warning has been issued for Monday night into Tuesday morning for the Great Salt Lake Desert, Box Elder County, and Cache County, with the greatest threat across northern Box Elder County and Cache County.


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