The Latest Breaking News from the National Weather Service

Hurricane Idalia strengthened to a dangerous Category 4 storm Wednesday morning as it steams toward Florida’s Big Bend region and threatens to unleash life-threatening storm surges and rainfall.

Floridians pray that when Idalia hits the Gulf Coast it won’t join the long list of destructive Atlantic Ocean storms whose names started with “I.”

A strong storm in Michigan powered by winds of up to 75 mph has downed trees and torn roofs off buildings and left hundreds of thousands of customers without power

Heavy rain has flooded an Ohio highway where people were rescued from their cars, covered the Las Vegas strip with water and closed a busy airport terminal outside Detroit

By early Wednesday afternoon, the heat index was at 116, tying July 14, 1995 for second highest heat index on record for the city of Chicago’s climate site. The highest heat index on record at the city of Chicago’s official climate site is 118 degrees, set on July 13, 1995.

Tropical Storm Franklin brings torrential rain to Dominican Republic and Haiti on Wednesday

Scorching heat affecting nearly 100 million people across a huge swath of the U.S. is sending schools, outdoor workers and organizers of open-air events scrambling to adjust

Temperatures are expected to hit the mid-90s with dangerous heat indexes soaring up to 115 degrees, the National Weather Service said.

Sweltering temperatures are lingering in a large swath of the central U.S., causing misery from the Gulf of Mexico almost to the Great Lakes