Flash Flood Warning — Philadelphia County, Pennsylvania
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 4:41AM EDT until August 3 at 7:15AM EDT by NWS Mount Holly NJ
FFWPHI The National Weather Service in Mount Holly has issued a * Flash Flood Warning for... Mercer County in central New Jersey... Southwestern Middlesex County in northern New Jersey... South Central Somerset County in northern New Jersey... Northwestern Burlington County in southern New Jersey... Northwestern Camden County in southern New Jersey... North Central Gloucester County in southern New Jersey... Southeastern Bucks County in southeastern Pennsylvania... East Central Delaware County in southeastern Pennsylvania... Southeastern Montgomery County in southeastern Pennsylvania... Philadelphia County in southeastern Pennsylvania... * Until 715 AM EDT. * At 441 AM EDT, Doppler radar and automated rain gauges 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
Effective August 3, 2026 at 4:41 AM ET · Expires August 3, 2026 at 7:15 AM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Mount Holly NJ
Expires
August 3, 2026 at 7:15 AM ET
Last Checked
just now
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 Pennsylvania
Flash Flood Warning
Flash Flood Warning
Flash Flood Warning
Get Flash Flood Warning Alerts for Philadelphia County
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Frequently Asked Questions
What does a Flash Flood Warning mean for Philadelphia County, Pennsylvania?
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 (just now). It's set to expire August 3, 2026 at 7:15 AM ET.
How do I get notified about Flash Flood Warning alerts for Philadelphia County?
Download StormCast free on Google Play and set Philadelphia County, Pennsylvania 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, Bucks County, Middlesex County, Somerset County, Delaware County, Burlington County, Camden County, Gloucester County, Montgomery County.