It’s hot, more so than usual. South Florida under an ‘excessive heat warning’

South Florida is no stranger to the heat, nor the constant heat advisories issued by the National Weather Service. But a warning issued Saturday about the weather calls for a bit more concern.

Miami-Dade and Broward counties are under an “excessive heat warning” expected to last until 6 p.m, according to the NWS.

Excessive heat warnings are rare and represent a higher level of concern compared to heat advisories.

Saturday’s heat index — the temperature when you mix in humidity — is expected to reach up to 113 degrees.

What is an excessive heat warning?

The designation is more severe and less common than a heat advisory, which is issued for Miami-Dade and Broward when a heat index of 105°F or higher is anticipated for at least two hours.

Specifically, the National Weather Service issues an excessive heat warning for Miami-Dade and Broward when a heat index of 110°F or higher is anticipated for at least two hours, a new criteria.

Up until last year, temperatures had to reach 113 degrees for an excessive heat warning to be issued for Miami-Dade and Broward counties. But this past year the NWS worked with Miami-Dade County to lower the criteria in an effort to combat heat-related illnesses, according to NWS Miami senior meteorologist Robert Garcia.

Stay hydrated

Extreme temperatures can increase the chances of heat-related illnesses.

The National Weather Service advises staying indoors and drinking lots of fluids until the heat begins to subside. Stay in air-conditioned spaces, avoid outdoor activities during peak heat, and check in on family and neighbors.

Wear lightweight, light-colored and loose-fitting clothing, and protect yourself from UV rays with a hat and sunscreen when you have to be outside.

The Occupational Safety and Health Administration also suggests taking regular breaks in shaded or air-conditioned areas if you’re outdoors. If you experience symptoms like dizziness, confusion, weakness or fainting, seek immediate medical help by calling 911.