A Flash Flood Warning is currently in effect for Cambria County and Allegheny County in Pennsylvania, running from 5:55 PM EDT on August 22, 2026, through 10:00 PM EDT the same evening. The warning was jointly issued by the National Weather Service office in State College, PA and the National Weather Service office in Pittsburgh, PA. Residents and anyone traveling through these counties should treat this alert as active and urgent for the full duration of that window.
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What NWS Is Telling You to Do Right Now
The core instruction from the National Weather Service is direct: turn around, don’t drown when you encounter a flooded road. This is not general caution language. It is the central action the issuing offices want every person in Cambria and Allegheny counties to follow for the next several hours.
The reason this instruction carries so much weight is spelled out clearly in the official alert: most flood deaths occur in vehicles. A road that appears passable can conceal moving water deep enough to sweep a car off course in seconds. The depth is almost never obvious from the driver’s seat, and standard vehicles, including trucks and SUVs, lose traction and buoyancy far sooner than most people expect.
The National Weather Service also instructs residents to be aware of your surroundings and do not drive on flooded roads. That means actively looking ahead as you move through affected areas, not just reacting when you reach standing water. If a route ahead is flooded, stop, reverse, and find an alternate path. No destination is worth the risk the alert is describing.
If you are currently in Cambria or Allegheny County and do not need to be on the road between now and 10:00 PM EDT on August 22, staying off roads entirely is the safest choice. This warning covers a broad geographic area across two counties, meaning multiple road segments and low-lying areas may be affected simultaneously.
Why This Warning Matters Beyond Tonight
Flash flood events like this one are a consistent part of the preparedness picture across Pennsylvania, and they serve as a useful checkpoint for households in any flood-prone region. At USRiskRadar, our evergreen guidance on flood preparedness emphasizes one practical habit that tonight’s warning reinforces: know your alternate routes before you need them. If your regular commute or errand route passes through a low-lying road, a creek crossing, or an underpass, identify a higher-ground alternative now and keep it in mind any time a warning is active in your county. The two or three minutes it takes to plan that detour on a clear day can be the difference between a safe arrival and a dangerous situation when water is moving fast and visibility is low after dark.
For the remainder of this warning period, through 10:00 PM EDT on August 22, 2026, treat every unfamiliar puddle or water crossing in Cambria and Allegheny counties as a potential hazard. Follow the guidance from the National Weather Service offices in State College and Pittsburgh: turn around, stay aware, and keep off flooded roads.
For the fundamentals that apply beyond this specific alert, see our Flood Preparedness guide.
Source: National Weather Service (NWS State College PA, NWS Pittsburgh PA). Active alert data retrieved 2026-08-22 22:01 UTC via api.weather.gov.
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