It also includes some surrounding jurisdictions.
148 PM EDT Thu Jul 27 2023 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT FRIDAY... * WHAT...For the first Heat Advisory, heat index values around 105 expected. For the second Heat Advisory, heat index values up to 109 expected. * WHERE...Portions of central, north central and northern Maryland and central and northern Virginia. * WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. By The National Weather Service, Sterling, Va.