Headline:
Flash Flood Warning issued July 21 at 3:13PM EDT until July 21 at 7:15PM EDT by NWS Mount Holly NJ
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
July 21, 2026 - 12:13pm
Expires:
July 21, 2026 - 4:15pm
Description:
FFWPHI
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Southeastern Morris County in northern New Jersey...
North Central Somerset County in northern New Jersey...
* Until 715 PM EDT.
* At 313 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1 inch of rain
has fallen. The expected rainfall rate is 1 to 2 inches in 1 hour.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
* Some locations that may experience flash flooding include...
Morristown, Madison, Florham Park, East Hanover, Morris Plains,
Mendham, Peapack And Gladstone, Far Hills, Bernardsville and
Hanover Township.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 31 and 41.
Interstate 80 in New Jersey between mile markers 45 and 48.
Instruction:
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Area Description:
Morris, NJ; Somerset, NJ
Forcast Office:
NWS Mount Holly NJ
Sender: