Weather across the nation: 4/8/13

3:45 PM, Apr 8, 2013   |    comments
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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.

MONDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................86 Midland Airpark, Texas

HIGHEST HEAT INDEX (DEGREES F)..........................87 Kingsville NAS, Texas

LOWEST TEMPERATURE (DEGREES F)..........................12 Cut Bank, Mont.

LOWEST WIND CHILL (DEGREES F)...........................-49 Umiat, Alaska

HIGHEST WIND GUST (MPH).................................84 Mt. Washington, N.H.

HIGHEST PRECIPITATION (INCHES)..........................1.41 Watford City, N.D.

ON THIS DATE

Yesterday, this column described how lightning sparked an oil fire in San Luis Obispo in 1926. On this date, the fire was so hot that it spawned tornado-like vortices. One of these vortices traveled 1,000 yards, picked up a house, and dropped it 150 feet away. Both occupants inside the house were killed.

The Associated Press

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