Event extended (time). Flash Flood Watch from 9/1/2021 8:00 AM to 9/2/2021 8:00 AM EDT for Southern PA. More information.
Interactive NWS Alert
Radar valid at 800 am EDT, Sep 2nd 2021
Chester-Eastern Chester-Western Montgomery-Eastern Montgomery-Upper
Including the cities of Jim Thorpe, Flemington, Media, Philadelphia,
Doylestown, Chalfont, Morristown, Honey Brook, Lansdale, Norristown,
Reading, Pottstown, Allentown, Oxford, Kennett Square, Easton, West
Chester, Morrisville, New Brunswick, Trenton, Newton, Washington,
Collegeville, Bethlehem, Stroudsburg, Perkasie, and Somerville
303 AM EDT Wed Sep 1 2021
...FLASH FLOOD WATCH NOW IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH THURSDAY MORNING...
The Flash Flood Watch is now in effect for
* Portions of New Jersey...and Pennsylvania...including the
following areas...in New Jersey...Hunterdon, Mercer, Middlesex,
Morris, Somerset, Sussex, and Warren. In Pennsylvania...Berks,
Carbon, Delaware, Eastern Chester, Eastern Montgomery, Lehigh,
Lower Bucks, Monroe, Northampton, Philadelphia, Upper Bucks,
Western Chester, and Western Montgomery.
* From 8 AM EDT this morning through Thursday morning.
* The remnants of Hurricane Ida will pass through the region today
and tonight. Periods of heavy rain and scattered thunderstorms
associated with this low will result in widespread rainfall totals
of 3 to 6 inches, with locally higher amounts possible. Much of
this rainfall may occur in a short period of time, exacerbating
the flooding threat. Combined with wet antecedent conditions, this
will lead to numerous instances of flash flooding, some of which
may be significant.
* Flooding of creeks, streams, urban areas, and poor drainage areas
is likely in the areas of heaviest rain. Water is likely to cover
the roads, especially in low-lying areas. Moderate to major
flooding is possible along some main stem rivers, and roads and
structures near these rivers may be flooded.
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