Weather Underground midday recap for Monday, April 08, 2013.
Heavy springtime snow, high winds, and significantly cooler temperatures developed in the Intermountain West, Rockies, and High Plains on Monday as a strong and cold storm system moved across the West. Energy associated with an intense, arctic cold front dropping in from the north with a colder airmass met with a low pressure system over the Four Corners and triggered significant snowfall along with areas of snow mixed with freezing rain and sleet at times in portions of Montana, Wyoming, the western Dakotas, parts of western Nebraska, Colorado, and Utah. Winter Weather Advisories and Winter Storm Warnings were issued for Montana and western North Dakota in anticipation of snow accumulations of 3 to 7 inches and periods of blowing snow. Areas south of this region are under Winter Weather Watches and Winter Storm Warnings in anticipation of wind gusts in excess of 40 mph and possible snow accumulation of up to 15 to 20 inches in the higher elevations. Blizzard Warnings were also issued for parts of Colorado due to possible whiteout conditions expected along with periods of heavy evening snow. Downed powerlines and tree limbs were possible due to heavy, wet snow and strong wind, while hazardous travel conditions were anticipated due to slippery, icy roads and lowered visibilities from blowing snow.
As this spring snow storm gripped the West, southerly winds ushered warm and humid air from the Gulf of Mexico into the Southern and Central Plains and increased chances of severe thunderstorm development on Monday. Areas from eastern Colorado to the Mid-Missouri Valley remained at slight risk of severe thunderstorm development from late this afternoon through tonight with large hail, isolated damaging wind gusts, and a few tornadoes.
Elsewhere, isolated rain showers continued in parts of the Ohio Valley during the afternoon, while a swath of rain and thunderstorms lifted across the Great Lakes.
Temperatures in the Lower 48 states Monday have ranged from a morning low of 12 degrees at Cut Bank, Mont. to a midday high of 86 degrees at Midland Airpark, Texas