WFO PHILADELPHIA Warnings, Watches and Advisories for Saturday, May 31, 2025

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AREAL FLOOD WARNING

Flood Statement

National Weather Service Mount Holly NJ

942 AM EDT Sat May 31 2025

...FLOOD WARNING WILL EXPIRE AT 945 AM EDT THIS MORNING...

The Flood Warning will expire at 945 AM EDT this morning for South

Central Lehigh and North Central Montgomery Counties. The Perkiomen

Creek at East Greenville has fallen below flood stage, and no

additional flooding is expected at this time.

Flood waters have receded. Flooding is no longer expected to pose a

threat. Please continue to heed remaining road closures.

...FLOOD WARNING NOW IN EFFECT FROM THIS MORNING TO THIS EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Swatara Creek at Harper Tavern.

* WHEN...From this morning to this evening.

* IMPACTS...At 9.0 feet, Several driveways and other minor roadways

are affected. Water begins to enter some basements.

At 10.0 feet, High water isolates several houses.

* ADDITIONAL DETAILS...

- At 9:15 AM EDT Saturday the stage was 8.8 feet.

- Forecast...The river is expected to rise to a crest of 9.0

feet this afternoon.

- Flood stage is 9.0 feet.

- Flood History...This crest compares to a previous crest of

9.1 feet on 05/08/2022.

- http://www.weather.gov/safety/flood

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