Extreme Heat Watch issued June 30 at 8:12PM EDT until July 3 at 8:00PM EDT by NWS Baltimore MD/Washington DC
WHAT: For the Heat Advisory, heat index values up to 106
expected. For the Extreme Heat Watch, dangerously hot conditions
with heat index values up to 110 possible.
WHERE: Portions of DC, central, north central, northeast,
northern, and southern Maryland, and central, northern, and
northwest Virginia.
WHEN: For the Heat Advisory, from 11 AM to 8 PM EDT Wednesday.
For the Extreme Heat Watch, from Thursday morning through Friday
evening.
IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity may cause heat illnesses.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.