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Helping Business Weather the Storm

National Weather Summary for Monday, December 21, 2015

by WeatherOps, on Dec 21, 2015 3:52:51 AM

Thunderstorms, some hazardous, will be possible Monday along the Gulf Coast. Moderate to heavy snow will be possible across the Cascades and North Central Rockies. Heavy rainfall is possible along the Pacific Northwest coastline.

As low pressure and a stalled frontal boundary move through the middle of the country, moisture will be drawn up into the US and thunderstorms are expected today for much of the Central and Gulf Coast regions. Currently, the severe weather threat looks marginal at best, but a few supercell thunderstorms could contain enough rotation to produce damaging winds or perhaps a brief and weak tornado. Heavy rain will also be a threat with widespread amounts of 2-3 inches possible and isolated heavier amounts.

A trough is expected to strengthen and dive into the Northwest on Monday, bringing with it heavy rainfall, heavy mountain snow, and light to moderate lower elevation snow. Overall totals in the lower elevations should remain low, but some valleys can expect 3-6 inches. Higher elevation amounts will vary between 6 and 14 inches with isolated heavier amounts.

Moderate to heavy rainfall is likely for the Pacific Northwest coastline as a low pressure trough and frontal boundary swing through the region. The main area of concern will be between California and Oregon where 3-5 inches of rain is possible, and isolated amounts in excess of 7 inches cannot be ruled out.

Topics:Nowcast/Forecast

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