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Heat Advisories Cover 70 Million as Southeast Sizzles

8/19/2026

Summary

Story summary

A heat wave will keep temperatures at or above 100 °F in the South through Sunday, leading National Weather Service to issue heat advisories and warnings.
Miami hit 100 °F, the hottest temperature in 84 years, with forecasters expecting 112 °F in Charleston while NOAA’s HeatRisk rates the Southeast as Level 4 heat risk.
More than 70 million people are under heat alerts, with officials advising checking on vulnerable individuals, staying hydrated and using air conditioning.

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Story summary

A heat wave will keep temperatures at or above 100 °F in the South through Sunday, leading National Weather Service to issue heat advisories and warnings.
Miami hit 100 °F, the hottest temperature in 84 years, with forecasters expecting 112 °F in Charleston while NOAA’s HeatRisk rates the Southeast as Level 4 heat risk.
More than 70 million people are under heat alerts, with officials advising checking on vulnerable individuals, staying hydrated and using air conditioning.