While high pressure was forecast to provide more calm weather activity to much of the nation Monday, a few areas of active weather would develop in the Northwest, near the Gulf Coast and in the Northeast.
In the West, a strong low pressure system in the Gulf of Alaska was expected to push a frontal system into the Pacific Northwest with moderate rain and high elevation snow. Areas along the coast, the Olympics and the northern Cascades would experience the heaviest amounts of precipitation. Forecasters said periodic heavy rainfall may cause areas of minor flooding near the coasts of Washington and Oregon. Meanwhile, snow levels would be high during the morning and should lower by the evening as the cold front pushed farther inland.
High pressure building over the Southwest was forecast to keep Northwest precipitation from spreading southward into California. Offshore winds associated with the high pressure system were expected to provide dry weather conditions and a warming trend across the state through much of the week.
Farther East, a developing low pressure system was forecast to raise moisture levels in the Ozarks and the Gulf Coast States as it trekked through eastern Texas. Increased moisture was expected to fuel numerous showers and thunderstorms in eastern Texas, Louisiana and portions of Arkansas. Forecasters said storms in parts of the Texas Hill Country and the Texas Coastal Plains might turn severe with hail and damaging winds.
Finally, to the north, strong high pressure was forecast to begin building into the Northeast, providing drier and cooler weather conditions to the region. The accompanying, chilly airmass would drop daytime highs to around 10 to 15 degrees below average during the next couple of days. A few rain and snow showers would be possible over northern New England.
Temperatures in the Lower 48 states Sunday ranged from a low of 15 degrees at Embarrass, Minn., to a high of 95 degrees at San Angelo, Texas.