Weather Alerts Map

Pennsylvania flash flood warnings

There are no flash flood warnings in Pennsylvania right now. The last one was issued on November 12, 2026.

Flash flooding is happening or about to happen. Move to higher ground and never drive through flooded roads.

Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS

Map data: NWS, OpenFreeMap, OpenStreetMap

Active flash flood warnings in Pennsylvania

None right now. Other active alerts in Pennsylvania: none.

Flash Flood Warnings in Pennsylvania by year

Pennsylvania averaged 128.7 flash flood warnings per year from 2016 to 2025, and has had 307 so far in 2026. The most recent was issued on November 12, 2026.

16: 44164417: 1281712818: 1981819819: 1671916720: 71207121: 1552115522: 36223623: 1232312324: 1252412525: 24025240
Flash Flood Warnings issued in Pennsylvania per year
Jan: 4Jan4Feb: 6Feb6Mar: 6Mar6Apr: 21Apr21May: 100May100Jun: 256Jun256Jul: 477Jul477Aug: 290Aug290Sep: 81Sep81Oct: 14Oct14Nov: 9Nov9Dec: 23Dec23
Flash Flood Warnings in Pennsylvania by month, 2016–2025

Counties with the most flash flood warnings

County2016–2025
Allegheny County160
Montgomery County129
Bucks County122
Chester County119
Westmoreland County115
Philadelphia County106
Delaware County97
Berks County92
Bradford County86
Washington County84

What a flash flood warning means

A flash flood warning means water is rising fast, usually within six hours of heavy rain, a dam or levee failure, or an ice jam. Small streams, low-water crossings, urban underpasses and burn scars from wildfires are the most dangerous places. A "flash flood emergency" is the highest level and is used when severe threat to life and catastrophic damage are occurring.

More about flash flood warnings and the national map →

What to do

More Pennsylvania alerts