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Extreme Heat Warning
ActiveDistrict of Columbia; Frederick; Carroll; Northern Baltimore; Cecil
Starts
Ends
Issued
Severity
Severe
Urgency
Expected
Certainty
Likely
Details
* WHAT...For the Heat Advisory, heat index values up to 107. For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 111 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected.
* WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia.
* WHEN...For the Heat Advisory, until 8 PM EDT this evening. For the first Extreme Heat Warning, from 10 AM to 8 PM EDT Thursday. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.
Data from the National Weather Service
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