Flash Flood Warning — Morris County, New Jersey
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Current Status
🌊 Active: Flash Flood Warning
Flash Flood Warning issued August 3 at 2:50AM EDT until August 3 at 5:45AM EDT by NWS Mount Holly NJ
FFWPHI The National Weather Service in Mount Holly has issued a * Flash Flood Warning for... Northwestern Mercer County in central New Jersey... Morris County in northern New Jersey... Somerset County in northern New Jersey... Southeastern Hunterdon County in northwestern New Jersey... * Until 545 AM EDT. * At 250 AM EDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have 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 and automated gauges. 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, Somerville, Bridgew
Effective August 3, 2026 at 2:50 AM ET · Expires August 3, 2026 at 5:45 AM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Mount Holly NJ
Expires
August 3, 2026 at 5:45 AM ET
Last Checked
2 minutes ago
What To Do
📋 Official NWS Guidance
Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Also In Effect For
This same Flash Flood Warning also covers:
Other Active Alerts in New Jersey
Flash Flood Warning
Flood Advisory
Flash Flood Warning
Flood Advisory
Flood Advisory
Flash Flood Warning
Get Flash Flood Warning Alerts for Morris County
StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
Frequently Asked Questions
What does a Flash Flood Warning mean for Morris County, New Jersey?
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Is this Flash Flood Warning currently active?
Yes — this alert is active as of our last check (2 minutes ago). It's set to expire August 3, 2026 at 5:45 AM ET.
How do I get notified about Flash Flood Warning alerts for Morris County?
Download StormCast free on Google Play and set Morris County, New Jersey as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flash Flood Warning is also in effect for Mercer County, Hunterdon County, Somerset County.