* WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 113 expected.
* WHERE...DC, and portions of central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia.
* WHEN...For the first Extreme Heat Warning, from 10 AM this morning to 8 PM EDT this evening. 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.