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D.C. area will be under Heat Advisory on Thursday

Forecasts suggest Thursday, July 27 could feel like 107 degrees in the D.C. area (via NWS/Twitter)

(Updated at 2:05 p.m.) A Heat Advisory will take effect tomorrow (Thursday) for the D.C. area, including Fairfax County, with temperatures expected to near 100 degrees.

Released by the National Weather Service this morning, the alert is slated to be in place from 11 a.m. to 8 p.m. tomorrow.

While currently forecasting a high temperature of 97 for Fairfax County, the NWS warns that the day could feel more like 105 degrees based on the heat index, which factors in humidity. An Excessive Heat Watch has also been issued, predicting “dangerously hot conditions with heat index values up to 110 possible.”

“Heat and humidity will increase the potential for heat related illnesses, particularly for those working or
participating in outdoor activities,” the alert said.

The NWS is urging community members to take some precautions if they have to spend time outside:

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.

Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

The Fairfax County government shared a reminder of the symptoms of heat exhaustion or stroke, which can include fainting, dizziness, muscle cramps, headaches, nausea and either excessive or no sweating.

“During hot and humid weather, your body’s ability to cool itself is challenged in ways you may not expect,” the county said.

If the advisory unfolds as scheduled, the county will activate its extreme heat response, opening up a number of public facilities as cooling centers and providing supplies like water and sunscreen at those locations and homeless shelters.

The county has also recently bolstered its response to extreme heat events by improving its process for alerting unsheltered residents and offering free Fairfax Connector bus passes to cooling centers.

In addition to heat, tomorrow’s forecast holds a 30-40% chance of thunderstorms after 2 p.m.

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