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Weather Underground midday recap for Sunday, November 18, 2012.

Unsettled weather continued across parts of the West on Sunday as a storm from the Pacific Ocean pushed inland. A strong upper level low dropping out of the Gulf of Alaska ushered a cold front with waves of low pressure across the Northwest, Central Great Basin, and California through the afternoon with ample moisture. This allowed for areas of rain and high elevation snow showers to persist from parts of central California through the Intermountain West and Northern Rockies as the system progressed eastward. Periods of heavy wet snowfall were expected across the Northern and Central Rockies through this evening with anticipated snow totals of 3 to 6 inches in the valleys and 6 to 12 inches in the higher elevations. In addition to precipitation, strong winds accompanied this system and created periods of blowing snow and periods of reduced visibility in the high mountain passes. Meanwhile, onshore winds maintained cool and moist flow into the Pacific Northwest, allowing areas of heavy rain and high elevation snow showers and windy conditions to continue along the coast and coastal mountain ranges. Winter Storm Warnings, Winter Weather Advisories, and High Wind Watches were issued for the Northwest from Sunday evening into Monday as a second and much stronger disturbance approached the region.

In the center of the nation, a few showers and thunderstorms streaked eastward through southeastern New Mexico and northwestern Texas this afternoon as a weak trough of low pressure moved over the Central and Southern Plains.

In the East, low pressure located off the southeast coast brought scattered showers to the western portions of the Carolinas through the afternoon, while heavier precipitation associated with this system remained offshore. To the north, high pressure prevailed across the Northeast with generally dry and quiet weather conditions.

Temperatures in the Lower 48 states Sunday have ranged from a morning low of 10 degrees at Berlin, NH to a midday high of 82 degrees at Falfurrias, Texas

 
 
 

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