Powerful Storm Over Northeast U.S.; Fire Weather Concerns In Southern California - A powerful low pressure system will linger across the Northeastern U.S. on Tuesday. Gusty winds will be common from the Great Lakes and Ohio Valley to the Eastern Seaboard, while heavy snow will impact areas of northeast Ohio, western Pennsylvania and southwestern New York. Meanwhile, elevated fire weather threats are expected in southern California from gusty offshore winds and dry conditions.

Unsettled Weather in the East; Elevated Fire Weather Conditions for Southern California - An area of low pressure moving through the Appalachians will bring moderate to heavy rainfall, strong to severe thunderstorms, and snow for much of the eastern U.S. through Tuesday. In the wake of the system, some areas in the South may see temperatures exceed 20 degrees below average. Elevated to brief critical fire weather conditions are expected in Southwest California through the week.

Central U.S. Storm; Elevated Fire Weather for Southern California - A storm will bring isolated heavy showers and thunderstorms across the central Plains into the Midwest before strengthening while shifting Northeast Sunday where snow and ice is possible from the Great Lakes into interior New England on the leading edge of the storm. Dry and gusty conditions will bring elevated fire weather concerns over the weekend to southern California.

Flooding Continues in the Southeast; Above Average Temperatures from the Plains to the East Coast - Widespread significant flooding is ongoing across portions of the Carolinas and Virginia from Eta. Some locations along main stem rivers will remain in flood well into next week, as routed water makes its way across the coastal plains. Abnormally mild temperatures are likely with temperature ranging between 10 and 25 degrees above normal from the Plains to the East Coast.

Unsettled Weather in the Northwest; Fire Weather Conditions in the Plains into the Ohio Valley - Unsettled weather will persist through today in the Pacific Northwest and Northern Rockies. Mixed precipitation is expected in the Northern Plains. Blustery conditions in the southern and central Plains into the Ohio Valley will bring fire weather risks to the regions. Above normal temperatures will spread west to east across the contiguous U.S. this week.

Unsettled Weather for the Northwest through Mid-week; Warm Temperatures Spreading Across the CONUS - Unsettled conditions will continue from the Pacific Northwest and California into the Sierra and Rocky mountains with locally heavy rain, a few thunderstorms, mountain snow, gusty to high winds, and possible coastal and burn-scar flooding. Above normal temperatures will spread west to east across the contiguous U.S. this week. Temperatures of 10 to 30 degrees above normal are likely.

A Series Of Storms Will Keep The West Unsettled This Week - A series of Pacific storm systems will keep a large portion of the West unsettled this week. Expect locally heavy rain, heavy mountain snow and gusty winds, especially in the Pacific Northwest to northern California. Also, elevated fire weather conditions are forecast in parts of southern California due to dry conditions and gusty offshore winds on Monday.

Eta Shifting Offshore; Series of Pacific Storms to Impact the West -  The center of Eta will pass just offshore of the coast of South and North Carolina through Friday morning. Widespread minor to moderate and scattered major river flooding is occurring in the wake of Eta. A series of storm systems will continue to impact the Western U.S. into next week with damaging high winds, heavy coastal rain and heavy mountain snow.

Eta Impacting Florida Again; Flooding Possible across Carolinas/Mid-Atlantic - Tropical Storm Eta is forecast to move inland over the northern portion of the Florida peninsula on Thursday. Tropical-storm-force winds, life-threatening storm surge and heavy rainfall are expected while tornadoes and flooding are possible. Heavy rain may lead to flash flooding through Thursday from the southern Appalachians into the Mid-Atlantic states where a front is meeting Eta's moisture.

Tropical Storm Eta to Impact West Coast of Florida; Flooding Possible Appalachians to Mid-Atlantic - Eta will move close to but offshore of the southwest coast of Florida Wednesday and move inland over the northern portion of the Florida peninsula on Thursday. Eta will bring Tropical-storm-force winds, Life-threatening storm surge and heavy rainfall with a potential for flooding. Further North, heavy rain may lead to flash flooding Wednesday from the southern Appalachians into the Mid-Atlantic.