Jacksonville faces a 112-degree heat index Monday, followed by afternoon thunderstorms and another dangerous heat day Tuesday.

Jacksonville faces a Heat Advisory, a 110°F heat index and late-day thunderstorms Sunday. Dangerous heat continues into midweek.

Jacksonville faces a heat index near 112 Saturday, followed by afternoon thunderstorms and another stretch of near-100-degree days.

Jacksonville faces a Friday Heat Advisory, a heat index near 110 degrees and afternoon thunderstorms. Even hotter temperatures are expected early next week.

Jacksonville faces a Heat Advisory, a 111-degree heat index and afternoon storms Thursday. Another hot, stormy stretch is already lining up for the weekend.

A microscopic Gulf alga rarely seen this far north has state officials warning Jacksonville residents to watch for burning eyes and dead fish.

Jacksonville faces a Heat Advisory Wednesday, with a 95°F high, afternoon thunderstorms and possible strong wind gusts. Even hotter days are ahead.

Jacksonville’s heat index could hit 110 Tuesday as afternoon storms return. The dangerous heat pattern is expected to continue through the weekend.

Jacksonville faces a week of mid-90s heat, high humidity and afternoon thunderstorms. Monday brings a heat index near 108°F and a moderate rip current risk at area beaches.

Jacksonville faces a hot, humid Sunday with afternoon storms, dangerous rip currents and heat index values up to 105. The heat intensifies next week.

Jacksonville faces a stormy Saturday with heavy downpours, lightning and dangerous rip currents before extreme heat returns next week.

Jacksonville faces afternoon thunderstorms, heavy downpours and dangerous rip currents Friday. A hotter stretch arrives next week.

Jacksonville faces afternoon thunderstorms Thursday, a wetter weekend and temperatures climbing toward the mid-90s next week.