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This story was originally published at 4:10 p.m. on June 30. It was updated at 5:30 a.m. on July 1 with the latest weather forecast and alerts.
ALEXANDRIA, Va. — Alexandria's Heat Advisory takes effect at 11 a.m. Wednesday and runs through 8 p.m. this evening, with the National Weather Service warning of heat index values up to 107 degrees during peak afternoon hours. The forecast high is 99 degrees, with a slight chance of afternoon thunderstorms after 3 p.m.
The more concerning stretch begins Thursday morning. An Extreme Heat Watch runs from 11 a.m. Thursday, July 2 through 8 p.m. Friday, July 3, with dangerously hot conditions and heat index values up to 112. Air temperatures peak at 103 degrees Thursday and 104 degrees Friday. Overnight lows fail to provide meaningful relief, bottoming out at 80 degrees both nights.
The heat risk now extends through the weekend and into next week. In a Hazardous Weather Outlook issued at 4:45 a.m. Wednesday, the NWS warned that "the significant heat risk will linger through the weekend," with air temperatures of 95 to 100 combined with humidity producing heat index values of 105 to 110 during afternoon hours. Sunday's forecast, which had been for a slight drop into the mid-90s, has now been revised up to a high of 100 degrees.
That means Alexandria faces five consecutive days of dangerous conditions: Wednesday's Heat Advisory, the Extreme Heat Watch on Thursday and Friday, and dangerous heat lingering into Saturday's Independence Day holiday and Sunday. Cooler temperatures don't arrive until Monday, when highs drop into the mid-90s and rain becomes likely — the first meaningful break in the pattern.
A new severe weather flag
Complicating the outlook: the NWS is now warning of severe thunderstorms possible Friday through Monday, particularly during afternoon and evening hours. The Hazardous Weather Outlook notes that "spotter activation may be needed" — meaning conditions are unstable enough that the agency may formally call on trained weather spotters to help track severe storms.
The combination is meaningful. Prolonged heat can already stress power infrastructure, particularly during peak evening cooling demand. A severe thunderstorm hitting an already-stressed grid can cause outages that leave residents without air conditioning during dangerous heat conditions.
The forecast now includes chance-of-thunderstorm windows Friday afternoon into Saturday early morning, Saturday afternoon into Sunday early morning, and Sunday afternoon through Monday, when showers become likely and possibly a thunderstorm. Rainfall totals remain modest — under a tenth of an inch through Sunday — meaning storms are more likely to bring lightning, wind, and possible power impacts than meaningful drought relief. Monday's outlook shifts to a 60% chance of precipitation, the highest of the seven-day window.
Cooling resources begin operating this morning
The city's cooling resources activate today. The DASH cooling bus deploys on King Street at 8:30 a.m. Wednesday and will remain in place through Sunday, July 5 at 4 p.m. — parked in front of 417 King Street near City Hall.
The two recreation centers designated for weekend heat relief — Charles Houston Recreation Center at 901 Wythe Street and Patrick Henry Recreation Center at 4653 Taney Avenue — will open Friday, July 3 and Saturday, July 4 from 11 a.m. to 8 p.m. All other recreation facilities and all library branches will be closed those two days for the Independence Day holiday, though they remain available during their normal business hours through Thursday.
Alexandria Library branches operate cooling hours Monday through Thursday from 10 a.m. to 8 p.m. and Friday from 10 a.m. to 5 p.m. That schedule applies today, Thursday, and — for the four branches typically open Friday — the morning and afternoon of Friday, before the branches close for the holiday. The libraries serving as cooling stations are the Charles E. Beatley Jr. Central Library at 5005 Duke Street, Kate Waller Barrett Branch Library at 717 Queen Street, Ellen Coolidge Burke Branch Library at 4701 Seminary Road, and James M. Duncan Jr. Branch Library at 2501 Commonwealth Avenue.
Health guidance from the Alexandria Health Department
The Alexandria Health Department warns residents to know the difference between heat exhaustion and heat stroke. Heat exhaustion symptoms include heavy sweating, muscle cramps, weakness, headache, nausea or vomiting, and dizziness. Heat stroke is a medical emergency: extremely high body temperature, confusion, hot and dry skin (no sweating), a rapid and strong pulse, or unconsciousness. If heat stroke symptoms appear, call 911 immediately and move the person to a cool location.
The NWS also warns residents to check on relatives and neighbors, particularly older adults and those without reliable air conditioning, throughout the heat event. "Look before you lock," the alert notes — never leave anyone, including pets, in a parked vehicle, where temperatures can reach lethal levels within minutes.
Programs targeted to seniors and lower-income residents
The Virginia Energy Assistance Cooling Program provides up to $400 toward a Dominion Energy bill for qualifying households that include a person over 60, a minor child under 6, or someone receiving Social Security disability payments. Applications can be made at commonhelp.virginia.gov or by calling the Enterprise Customer Call Center at 855-635-4370.
The Senior Cool Care Program offers cooling fans to eligible Alexandria adults 60 and older. Residents can call 703-746-5999 to check eligibility.
Reporting concerns and staying informed
Residents with non-emergency questions about cooling locations or other city services can call Alex311 at 311 or 703-746-4311. The call center operates Monday through Friday, 7 a.m. to 7 p.m., and Saturday, 8 a.m. to noon. Alex311 also accepts requests through its online portal 24/7 and its mobile app.
For emergencies — including suspected heat stroke — call or text 911.
Updated status information is available at the city's Current Alert Status page, which is updated as conditions change. The National Weather Service's Baltimore/Washington office provides forecast updates at weather.gov/lwx.
This story was originally published at 4:10 p.m. on June 30. It was updated at 5:30 a.m. on July 1 with the latest weather forecast and alerts.
