Florida heat advisory issued as Miami ties record high

South Florida is under a new heat advisory for Thursday, the fourth consecutive day of alerts, as the region endures a prolonged heat wave. The National Weather Service (NWS) warns of heat index values up to 110°F (43.3°C) from 11 a.m. to 6 p.m. across Miami-Dade, Broward, and Palm Beach counties Source: Clarin. The actual high on Thursday is forecast to reach 92°F (33.3°C), with a 40% chance of rain that could offer some relief Source: Clarin. This follows Tuesday's record-tying high of 100°F (37.8°C) in Miami, a mark last seen in 1942 Source: Infobae. The NWS noted that Miami reached 100°F for only the second time since 1895, tying the historical record Source: Infobae. The heat wave is part of a broader pattern affecting the southern U.S., with temperatures up to 115°F (46°C) in some border states Source: Infobae. The NWS has lowered the threshold for issuing heat advisories from 108°F to 105°F (heat index) since 2023, reflecting the increased risk Source: Clarin. Extreme heat causes more than 30 deaths and hundreds of hospitalizations annually in Miami-Dade County Source: Clarin. A recent AP-NORC poll found that extreme heat has significantly impacted Americans' daily lives, affecting travel plans, electricity bills, sleep quality, and outdoor activities Source: Clarin. The NWS expects similar conditions through the weekend, with storms providing some relief Source: Clarin.