Excessive Rainfall Triggers Flood Warning in Southwest PA Until Friday Morning

At 1:19 a.m. Friday the National Weather Service issued a flood warning. The alert covers Allegheny, Armstrong, Beaver, Fayette, Indiana, Washington and Westmoreland counties. It remains in effect until 7:15 a.m.

Scope and cause

Officials say excessive rainfall is expected to produce flooding. Rivers, creeks, streams and other low-lying areas may become inundated. Residents across Southwest PA should monitor conditions through Friday morning.

What the warning means

The NWS classifies flood messages to guide public response. A flood warning means flooding is imminent or already happening. A flash flood warning calls for immediate action and rapid movement to higher ground.

• Flood watch: Conditions favor flooding. Be prepared.
• Flood advisory: Minor flooding possible. Stay aware.
• Flood warning: Flooding imminent or occurring. Take action.
• Flash flood warning: Sudden, violent flooding possible. Move now.

Safety guidance for residents

Never drive through standing or moving floodwater. Twelve inches of rushing water can move most vehicles. Six inches of moving water can knock a person off their feet.

If you live in a flood-prone area, move to higher ground immediately. Follow any evacuation orders from local authorities without delay. Secure your home and lock doors before leaving when time allows.

Disconnect utilities and appliances if you can do so safely. Avoid basements and submerged rooms with electrical outlets or cords. If you hear buzzing, crackling, or other electrical noises, evacuate at once and call 911.

If you become trapped

Seek the highest available point and call emergency services. Do not attempt to walk through moving water. Emergency responders should handle swift-water rescues.

Driving in heavy rain

Slow down and increase following distance. Use a four-second gap in heavy rain instead of the usual two-second rule. Sudden braking can cause skids on wet pavement.

• Avoid parking near culverts and drainage ditches during downpours.
• Prefer middle lanes to reduce hydroplaning risk.
• Turn on headlights to improve visibility.
• Be cautious around large trucks. Tire spray reduces visibility.
• If visibility is severely limited, pull off past the guard rail if possible.
• Use emergency flashers and keep headlights on when stopped roadside.

Filmogaz.com urges readers to stay informed and heed NWS guidance during this flood event. Monitor local alerts and avoid flooded roads until authorities say it is safe.