Event extended (time). Flash Flood Watch from 9/23/2021 11:00 AM to 9/24/2021 2:00 AM EDT for Southern PA. More information.
Interactive NWS Alert
Radar valid at 200 am EDT, Sep 24th 2021
Chester-Eastern Chester-Western Montgomery-Eastern Montgomery-Upper
Including the cities of Media, Lansdale, Honey Brook, Jim Thorpe,
West Chester, Allentown, Morrisville, Philadelphia, Doylestown,
Collegeville, Chalfont, Pottstown, Bethlehem, Stroudsburg, Oxford,
Perkasie, Reading, Kennett Square, Easton, and Norristown
308 PM EDT Wed Sep 22 2021
...FLASH FLOOD WATCH NOW IN EFFECT FROM THURSDAY MORNING THROUGH
LATE THURSDAY NIGHT...
The Flash Flood Watch is now in effect for
* Portions of east central Pennsylvania...northeast Pennsylvania...
and southeast Pennsylvania...including the following areas...in
east central Pennsylvania...Berks, Lehigh, and Northampton. In
northeast Pennsylvania...Carbon and Monroe. In southeast
Pennsylvania...Delaware, Eastern Chester, Eastern Montgomery,
Lower Bucks, Philadelphia, Upper Bucks, Western Chester, and
* From Thursday morning through late Thursday night.
* Showers and thunderstorms will develop ahead of and with the
passage of a cold front on Thursday afternoon and Thursday
evening. Rain will be heavy at times. Widespread rainfall totals
will range from 1.5 to 3 inches with locally higher amounts
* Flash flooding is possible during this time.
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
iNWS is an experimental service intended for NWS core partners,
including emergency managers, community leaders and other government