Fourth

A heatwave begins today with temperatures in the 90s and heat index values reaching 100-110. Excessive heat warnings are in effect until Thursday, accompanied by thunderstorms and isolated severe storms. Miami-like humidity will make conditions feel hotter, particularly this afternoon and evening.

Heat is expected to intensify through the holiday weekend, with temperatures rising into the upper 90s and heat index values exceeding 100°. Storm chances are limited to mountainous regions, and dangerous heat conditions could challenge record highs by the Fourth. Minor relief is anticipated by the weekend's end.