Brief cooling ahead for the Heartland; hot pattern to resume next week
Extreme heat will shift westward later in the week, with cooler air arriving in the Midwest and much of the East. However, above-normal temperatures will persist across the Deep South.
During the weekend, triple-digit (100-degree) heat will affect the Plains, extending as far north as the Dakotas. Summer-like heat will also stretch from the Desert Southwest to the Rockies, although cool weather will prevail along and near the Pacific Coast.
Around the periphery of a ridge of high pressure, scattered showers and thunderstorms will affect the northern and eastern U.S.
Other areas of the country, from California to the middle and lower Mississippi Valley, will remain mostly dry, although late-week thundershowers may develop in the Four Corners region.