The nation’s weather

Weather Underground Forecast for Tuesday, September 03, 2013.

Unsettled weather will continue in the Easter Seaboard and parts of the Southeast on Tuesday, while cooler and drier weather spread further across the Midwest.

In the East, the northern portion of a long cold front extending from the Northers through the Deep South will continue eastward on Tuesday across the Northeast and Mid-Atlantic States and offshore into the western Atlantic Ocean. Sufficient moisture and energy ahed of this disturbance will maintain showers and thunderstorms through much of the day. Isolated, strong thunderstorms in northern New England areas may evolve with locally strong wind gusts and marginally severe hail. Meanwhile, as the northern portion of this cold front moves torad the Atlantic Ocean, the southern portion of the boundary will continue southeastward, reaching from the Carolinas through the Southeast. Scattered showers and thunderstorms are expected ahead/to the south of this disturbance with areas of moderate rainfall.

As unsettled weather continues in the East and South, high pressure will settle over the Midwest with drier and cooler weather conditions. Daytime highs for the region are expected to range from the 60s in parts of the lower Great Lakes through 70s and 80s in the upper Great Lakes, Ohio Valley, and Upper and Mid-Mississippi Valleys.

Out West, a strong low off the Pacific Northwest coast will usher modest to strong, moist southwesterly flow into the interior Northwest, triggering scattered showers and potentially strong thunderstorms. Additional showers and thunderstorms will continue from the Desert Southwest and across the rest of the Intermountain West.

Temperatures in the Lower 48 states Monday have ranged from a morning low of 35 degrees at Langdon, N.D. to a high of 105 degrees at Thermal, Calif.

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