Torrential rains flooded Chicago's streets, leading NASCAR officials to postpone a race and causing disruptions in transportation services.

The National Weather Service issued hazardous weather alerts for over 110 million Americans during the extended July Fourth holiday weekend.

Train services in Chicago were suspended, buses were rerouted, and sections of Interstate highways 55 and 290 were shut due to flooding.

Although rain in Chicago was tapering off, the NWS warned that lingering flood impacts would likely persist for several hours.

New York Governor Kathy Hochul monitored significant flooding in Clinton County due to heavy rainfall, with more thunderstorms expected in the state.

The weather service warned of scattered strong to severe thunderstorms across the Mid Atlantic Region and parts of the northern Great Plains, potentially disrupting Fourth of July holiday travel.

The U.S. South and Southeast experienced a prolonged record-breaking heat wave, while the West saw building heat.

Over 18 million people were under excessive heat warnings, with dangerously hot weather affecting parts of the Southeast, Gulf Coast, Southwest, and California.

Several locations in Northern California, including Sacramento, Redding, Red Bluff, Stockton, and Modesto, set record daily temperature highs for July 2.

Nevada also saw triple-digit temperatures, with Las Vegas experiencing a record time between the first 100° and 110° days since 1955.