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Story summary
- A dome of heat will intensify across the United States this week, raising temperatures above average, especially in the South and Midwest.
- Forecasts show highs in the 90s in the Southwest and in the 70s in the Midwest.
- Severe weather, including thunderstorms and rain, is expected as Gulf moisture moves northward.
- By Thursday, Midwest highs reach the upper 60s to low 70s, and the National Weather Service says the pattern lasts through March.
