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Weather across the nation: 4/16/13

8:32 PM, Apr 16, 2013   |    comments
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Wintry weather continued for the West on Tuesday, while showers and thunderstorms formed in the Central and Eastern U.S.

In the West, an upper trough of low pressure dropped southeastward into the Intermountain West, allowing energy in the Desert Southwest to advance toward the Southern Rockies and cold air to pour into the Intermountain West from the north.

This setup maintained snow showers in the mountains of the Pacific Northwest and Sierra Nevadas and translated into another shot of moderate to heavy snowfall for areas of the Great Basin through the Central and Northern Rockies and into parts of Nebraska and western South Dakota.

The heaviest snowfall accumulations were expected in the Colorado and Wyoming Rockies as storm snow totals of 12 to 16 inches remained possible. In addition to heavy snow, strong winds, gusty at times, created periods of blowing and drifting snow, leading to lowered visibility and ultimately hazardous travel conditions.

As this system shifted eastward on Tuesday, moisture from the Gulf of Mexico streamed northward into the Plains and created chances of isolated to scattered showers and thunderstorms in the Southern and Central Plains.

Parts of the Texas South Plains into northwest Texas were at slight risk of severe thunderstorms development through the afternoon and evening, while parts of the Central Plains remained at slight risk through tonight. The main concerns with severe weather activity in these regions were large hail events.

Meanwhile, a cold front associated with low pressure lifting through eastern Canada trekked eastward through the Midwest toward the Northern Appalachians. Ample moisture ahead and along the front fueled scattered showers and thunderstorms along and just north of the front in the Ohio Valley and scattered showers ahead of the front in the interior Northeast.

Areas of the Lower Ohio and Tennessee Valley remained at slight risk of severe thunderstorm development during the afternoon and evening. The main severe weather concerns in these regions were large hail and damaging wind gusts.

TUESDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................90 Naples, Fla.

HIGHEST HEAT INDEX (DEGREES F)..........................97 Tampa Macdill AFB, Fla.

LOWEST TEMPERATURE (DEGREES F)..........................8 Yellowstone, Wyo.

LOWEST WIND CHILL (DEGREES F)...........................-44 Nuiqsut, Alaska

HIGHEST WIND GUST (MPH).................................78 Mt. Washington, N.H.

HIGHEST PRECIPITATION (INCHES)..........................1.68 Bloomington, Ill.

ON THIS DATE....... Oklahoma experienced damaging weather on this date in 1990. Along with strong winds, large baseball size hail fell near Carney, OK. Unfortunately, many near deadline tax returns were blown away from a mail cart by reported wind gusts of 100 mph in Oklahoma City.

The Associated Press

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