A heat index near 112°F is not a weather curiosity. It's the temperature at which the human body can no longer cool itself through sweat alone, and WPBF reported those conditions across South Florida this week — compounded by isolated severe storms that can knock out the grid in the middle of the worst of it.

That combination is the specific threat Florida households need to plan around. Not just heat. Not just storms. Both, simultaneously, in a state where the average home depends entirely on mechanical cooling to remain survivable.

What's actually changing

Floridians have always dealt with brutal summers. What's shifted is the frequency of days where the heat index exceeds 105°F and the duration of those events. When a severe storm rolls through and takes down power lines, the house begins warming immediately. Without AC, an interior that was 76°F can reach 85°F within two hours and 90°F within four, depending on insulation quality, window exposure, and how many people are inside.

For elderly residents, infants, and anyone with cardiovascular or respiratory conditions, that trajectory is not a discomfort problem. It's a medical one. Florida's Department of Health consistently lists hyperthermia as a leading storm-related cause of death in the state, precisely because the power outage and the heat arrive together.

The storm-plus-heat scenario also strains the grid in a specific way: every household that loses power temporarily and then regains it triggers an AC restart simultaneously. That surge can cause rolling instability for hours after a storm clears.

What we'd actually do

Check your AC filter and coils this week, not next month. A clogged filter forces your system to work harder and longer to reach target temperature. In 112°F heat-index conditions, a struggling unit may run continuously and still fall short — or trip a breaker. Pull the filter, hold it to a light source, and replace it if you can't see light through it. While you're at it, verify the outdoor condenser coils aren't blocked by debris or overgrown vegetation.

Identify your household's nearest public cooling center before you need it. Miami-Dade, Broward, and Palm Beach counties all maintain cooling center networks that activate during heat emergencies. Find the one closest to you now and save the address. If your AC fails during a grid outage and you have vulnerable people in the house, that address is the decision you need to have already made.

Stock a three-day water supply calibrated to heat, not to standard emergency guidance. The standard one-gallon-per-person-per-day figure assumes moderate activity in moderate conditions. In 112°F feels-like temperatures with physical exertion, fluid needs roughly double. For a family of four, that means closer to eight gallons per day under heat stress. Fill clean containers now. Shelf-stable electrolyte packets are worth keeping on hand for anyone who's been outside for more than 30 minutes.

Test your generator's transfer setup or, if you don't own one, map your no-generator contingency. A portable generator that's still in the box is not a plan. If you have one, run it for 20 minutes this week, confirm it starts, and verify your extension cord gauge is appropriate for your window AC unit's draw (most require at least 12-gauge for a 5,000–8,000 BTU unit). If you don't have a generator and can't justify one right now, your contingency is the cooling center plan above — and it needs to be written down, not assumed.

Weatherstrip and shade before the next storm warning. This sounds counterintuitive for a storm article, but reflective window film and door weatherstripping both slow heat gain significantly once AC is gone. A home that holds 76°F for four hours instead of two gives you meaningful additional time to make decisions. Neither upgrade requires a contractor.

The bigger picture

South Florida's summer climate has always demanded that households treat cooling infrastructure as seriously as they treat food and water. A 112°F heat index is a reminder that the margin for equipment failure, grid disruption, or poor planning is essentially zero during peak conditions.

The goal here isn't to treat every hot week as a disaster drill. It's to have done the boring maintenance — filters, contingency plans, water supply — so that when a storm knocks out the grid at 3 p.m. on a 95°F day, you're already two steps ahead of the crisis.

Durability looks like a clean AC filter and a written address. Start there.