National Weather Service United States Department of Commerce

Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Extreme heat is expected to continue today, with highs in the low to mid 90s and heat index values over 105 degrees due to continued high humidity. Heat will continue overnight, with lows in the 70s. Although an isolated shower or storm is possible, it will not temper heat potential.
An Extreme Heat Warning remains in effect through 7 PM CDT Wednesday for continued high temperatures and humidity. Although heat index values may be slightly lower than previous days due to showers and storms, heat impacts are expected to be significant due to multiple days lead-up of high heat.
High humidity combined with temperatures in the 80s and 90s will lead to continued heat impacts through the end of the work week. Long duration heat may lead to extensions of the Extreme Heat Warning. Increasing rain and storm chances Thursday night into Friday may still temper heat index values.