* WHAT…For the Extreme Heat Warning, dangerously hot conditions
with heat index values up to 110 expected. For the Extreme Heat
Watch, dangerously hot conditions with heat index values up to 110
possible.
* WHERE…In Maryland, Northwest Montgomery and Frederick MD
Counties. In Virginia, Eastern Loudoun and Western Loudoun
Counties.
* WHEN…For the Extreme Heat Warning, from 11 AM to 9 PM EDT
Monday. For the Extreme Heat Watch, from Tuesday morning through
Tuesday evening.
* IMPACTS…Heat related illnesses increase significantly during
extreme heat and high humidity events.