# Rare September Nor'easter Threatens Philly Region

> Philly faces rare September nor'easter with flash flood risks amid record warning year
- Title: Rare September Nor'easter Threatens Philly Region | Shortify
- Summary: Philly faces rare September nor'easter with flash flood risks amid record warning year Philly region could see prolonged coastal flooding from a September…
- Keywords: philly, nor'easter, coastal flooding, flash flood warnings, national weather service, september, delaware river, philly region, east coast, weather forecast, coastal areas, flash flood
- Source: PhillyVoice — https://phillyvoice.com/philly-rain-weather-noreaster-forecast-september-flooding-new-jersey
- Published: 2026-09-22T22:34:03.407+00:00
- Read time: 1 min
- Topics: philly, nor'easter, coastal flooding, flash flood warnings, national weather service, september, delaware river, philly region, east coast, weather forecast, coastal areas, flash flood
## Rare September Storm Approaching
A rare September nor'easter is forecast to hit the Philly region with coastal flooding risks this week.
## Early Season Storm Alert
Meteorologists note this storm hits earlier than typical for coastal flooding events but isn't unprecedented.
## Record Flash Flood Year
The Philly area has received 156 flash flood warnings this year, exceeding the annual average of 63.
## Flash Flood vs. Coastal Flooding
This storm causes longer-duration flooding rather than quick flash floods that trigger immediate warnings.
## Delaware River Flooding Risk
Water could be pushed up the Delaware Bay into the tidal portions of the Delaware River, causing flooding in Philadelphia.
## Temperature Drop Expected
Temperatures are expected to dip below average with highs in the 60s for the rest of the week.
## Storm Origin and Path
The storm is forming off the coast of the Carolinas and Virginia with potential impacts on the East Coast.
## Coastal Advisory Timeline
Coastal flood advisories for New Jersey and Delaware start Tuesday night with potential for moderate flooding by Wednesday afternoon.
## Flash Flood Warning Context
This year's record 156 flash flood warnings exceed the previous record of 113 set in 2018.
## Longer-Duration Flooding
The storm's prolonged rainfall could lead to flooding in Philadelphia without triggering typical flash flood warnings.
## Key takeaway

Philly region could see prolonged coastal flooding from a September nor'easter, not typical flash flooding from heavy rain