The Nation's Weather 06.18.09

By WEATHER UNDERGROUND

A storm system over the Upper Great Lakes was expected to move into the northeastern U.S. on Thursday, bringing showers and some heavy downpours.

Isolated to scattered thunderstorms were possible with the showers throughout the day. Severe weather with hail, string winds and potential tornadoes was possible from the Great Lakes to the Mid-Atlantic coast.

Showers and storms were also tracking across the Central and Northern Plains, with a slight chance for severe weather. The Southern Plains and South were to be quieter.

In the West, scattered showers and thunderstorms were to continue in the Intermountain region. Higher temperatures were forecast for California and the Pacific Northwest.

Temperatures in the Lower 48 states Wednesday ranged from a low of 35 degrees at Stanley, Idaho, to a high of 105 degrees at Alva, Okla.