The nation's weather

AP News
Posted: Nov 19, 2009 4:55 AM

Wet weather was expected to persist and intensify over the Northwest, while lingering showers could continue over the Northeast on Thursday.

A strong low pressure system was forecast to move into British Colombia and continue pushing a cold front over the Pacific Northwest. This system was expected to have picked up ample moisture and could trigger widespread scattered showers over the region with periods of heavy rain. Another dreary day with rainfall amount of up to 2 inches was expected, while the Cascades and Northern Rockies could see up to 5 inches of new snow accumulation.

Strong winds were expected to also accompany this storm with gusts up to 20 mph in most areas, and up to 30 mph at higher elevations. This system was forecast to remain to the north, but allow for cool conditions to continue over the rest of the West Coast.

Meanwhile, a low pressure system was expected to linger over the Ohio Valley and could bring another wet day to New England. This system was expected to slowly advance northeastward throughout the day, which could bring increasing showers to the Lower Great Lakes and Northeast.

Rainfall amounts were expected to remain less than a tenth of an inch while some areas could see up to a half of an inch of rain. Highs were expected to remain in the 50s over most of the region.

To the south, cool air was forecast to fill in behind this system and allow for frost and freeze advisories over parts of the Southeast. Daytime highs could reach into the 60s over the Southeast and Mid-Atlantic States, while overnight lows could dip into the 30s.

In the Central U.S., high pressure was expected to continue building over the Plains and bring another day of sunny skies and warm conditions. A weak front was forecast to sweep through the Northern Plains but is not expected to kick up any precipitation on Thursday.

Highs were expected to remain in the 50s in the North, while the Southern Plains could see another warm day in the 70s.

On Wednesday, temperatures in the Lower 48 states ranged from a low of -3 degrees at Lake George, Colo. to a high of 88 degrees at Miami, Fla.