Active weather was forecast to continue throughout the East on Monday as a cold front over the Eastern Valleys moved into the Northeast and the Mid-Atlantic.
Scattered showers and clusters of thunderstorms would develop ahead of this disturbance throughout the day. Forecasters said areas from eastern New York and northern England southward into the Mid-Atlantic may experience severe storms with damaging winds and possible tornadoes. Meanwhile, tropical moisture and daytime heating would aid in producing additional showers and thunderstorms along the southern end of the front, from areas of the Southeast through the Southern Plains.
Elsewhere in the South, the remnants of a tropical depression would re-enter the Gulf of Mexico on Monday. Bands of heavy rain and thunderstorms with strong, gusty winds were expected across the coastal regions of Alabama, Mississippi and southeast Louisiana as the system approached the Gulf Coast and begins to strengthen again. The National Hurricane Center was giving the remnant low a 50 percent chance of redeveloping into a tropical depression by Tuesday afternoon.
Elsewhere in the East, cooler and drier air would move into the Upper Midwest, but wouldn't reach far enough south to provide much relief to the Southern Plains and the Lower Mississippi Valley. Thus, heat indices in these regions would climb above 100 degrees once again, allowing heat advisories and excessive heat warnings to persist.
In the West, hot weather conditions would continue across the inland areas of the Pacific Northwest and California, while seasonably cool temperatures persist along the West Coast.
Temperatures in the Lower 48 states Sunday ranged from a low of 31 degrees at Lake Yellowstone, Wyo., to a high of 118 degrees at Death Valley, Calif.