Headline:
Flood Watch issued August 20 at 12:55PM EDT until August 21 at 2:00AM EDT by NWS Mount Holly NJ
Event:
Flood Watch
Urgency:
Future
Effective:
August 20, 2026 - 9:55am
Expires:
August 20, 2026 - 10:00pm
Description:
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of northern Delaware, including the following
area, New Castle, New Jersey, including the following areas,
Atlantic, Camden, Coastal Atlantic, Coastal Ocean, Cumberland,
Eastern Monmouth, Gloucester, Hunterdon, Mercer, Middlesex,
Morris, Northwestern Burlington, Ocean, Salem, Somerset,
Southeastern Burlington and Western Monmouth, and southeast
Pennsylvania, including the following areas, Delaware, Eastern
Chester, Eastern Montgomery, Lower Bucks, Philadelphia, Upper
Bucks, Western Chester and Western Montgomery.
* WHEN...Through late tonight.
* IMPACTS...Flooding may occur in poor drainage and urban areas.
Creeks and streams may rise out of their banks. Excessive runoff
may result in flooding of rivers, creeks, streams, and other
low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- Showers and a thundertorms are expected through this evening.
Rainfall rates of 1 to 3 inches per hour are possible in
stronger storms. Total rainfall amounts of 1 to 2 inches are
expected with some areas experiencing 3 to 5 inches of
rainfall which could cause flash flooding.
- http://www.weather.gov/safety/flood
Instruction:
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Area Description:
New Castle; Morris; Hunterdon; Somerset; Middlesex; Western Monmouth; Eastern Monmouth; Mercer; Salem; Gloucester; Camden; Northwestern Burlington; Ocean; Cumberland; Atlantic; Coastal Atlantic; Coastal Ocean; Southeastern Burlington; Delaware; Philadelphia; Western Chester; Eastern Chester; Western Montgomery; Eastern Montgomery; Upper Bucks; Lower Bucks
Forcast Office:
NWS Mount Holly NJ
Sender:
w-nws.webmaster@noaa.gov