Weather Alerts For North Potomac, MD
Extreme Heat Watch
-# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY EXTREME HEAT WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING # DETAILS -------------------- WHAT For the Heat Advisory, heat index values up to 106 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. WHERE Portions of DC, 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. ISSUED AT Tuesday, June 30, 2026 at 8:12 PM EDT ISSUED BY National Weather Service Baltimore MD/Washington DC HEADER URGENT - WEATHER MESSAGE # 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. # AREAS AFFECTED -------------------- Calvert, Central and Southeast Prince William/Manassas/Manassas Park, Northwest Howard, Orange, Southeast Harford, Southern Baltimore, Stafford, Albemarle, Anne Arundel, Arlington/Falls Church/Alexandria, Carroll, Cecil, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Culpeper, District of Columbia, Eastern Loudoun, Fairfax, Frederick, Greene, King George, Madison, Nelson, Northern Baltimore, Northern Fauquier, Northwest Harford, Northwest Montgomery, Northwest Prince William, Prince Georges, Rappahannock, Southern Fauquier, Spotsylvania, St. Marys, Western Loudoun
Heat Advisory
-# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY EXTREME HEAT WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING # DETAILS -------------------- WHAT For the Heat Advisory, heat index values up to 106 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. WHERE Portions of DC, 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. ISSUED AT Tuesday, June 30, 2026 at 8:12 PM EDT ISSUED BY National Weather Service Baltimore MD/Washington DC HEADER URGENT - WEATHER MESSAGE # 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. # AREAS AFFECTED -------------------- Calvert, Central and Southeast Prince William/Manassas/Manassas Park, Northwest Howard, Orange, Southeast Harford, Southern Baltimore, Stafford, Albemarle, Anne Arundel, Arlington/Falls Church/Alexandria, Carroll, Cecil, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Culpeper, District of Columbia, Eastern Loudoun, Fairfax, Frederick, Greene, King George, Madison, Nelson, Northern Baltimore, Northern Fauquier, Northwest Harford, Northwest Montgomery, Northwest Prince William, Prince Georges, Rappahannock, Southern Fauquier, Spotsylvania, St. Marys, Western Loudoun
