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Heat Advisory
ActiveDistrict of Columbia; Frederick; Carroll; Northern Baltimore; Cecil
Starts
Ends
Issued
Severity
Moderate
Urgency
Expected
Certainty
Likely
Details
* WHAT...For the Heat Advisory, heat index values of 105 to 109 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values around 110 possible.
* WHERE...DC, and portions of 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.
* ADDITIONAL DETAILS...Heat index values may approach 115 in spots near and east of Interstate 95 Thursday afternoon and Friday afternoon, especially near larger bodies of water. Dangerous heat may linger into Saturday. Prolonged extreme heat could impact power, water, and transportation systems.
Data from the National Weather Service
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