This event is no longer active — it's kept here as a record. Recovery may still be underway; the guidance below applies.
Part of: Northampton County Area Flooding — July 2026 →
Flash Flood Warning issued July 28 at 7:11PM EDT until July 28 at 11:15PM EDT by NWS Mount Holly NJ
This is a severe-significance flash flood warning event affecting New Castle, DE; Camden, NJ; Gloucester, NJ; Salem, NJ; Delaware, PA; Philadelphia, PA, tracked from official feeds (NOAA / National Weather Service). We update this page as the situation develops.
- Type
- Flash Flood Warning
- Extent
- ≈ 259,971 acres
- Began
- To end
Affected by this event? Open your area's damage guides below to reach a vetted local restoration pro, 24/7.
Affected area map
The shaded area is the affected-area perimeter reported for this event by NOAA / National Weather Service (New Castle, DE; Camden, NJ; Gloucester, NJ; Salem, NJ; Delaware, PA; Philadelphia, PA), colored by hazard type. Pan and zoom to explore the map; when more than one observation exists, use the slider below to step through how the reported area changed.
Interactive affected-area map
New Castle, DE; Camden, NJ; Gloucester, NJ; Salem, NJ; Delaware, PA; Philadelphia, PA · ≈ 410 sq mi reported extent · Enable JavaScript to explore the map.
Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NOAA / National Weather Service ↗.
Restoration help near this event
Tap your city for a vetted local pro on that service, answered 24/7. Where we don't have a nearby city page yet, the step-by-step guides cover what to do first.
Water damage restoration
What to do now
Mold remediation
What to do now
Latest updates
Official updates and news coverage for this event, newest first — National Weather Service products, local storm reports, incident updates and press headlines. Official items are verbatim government text; news headlines link out to the original outlet.
- Storm report NWS PHI storm report
FLASH FLOOD — 1 ESE West Brandywine T, PA
Reports of flooding on Reeceville Road with multiple homes flooded.
- Storm report NWS PHI storm report
FLASH FLOOD — Upper Saucon Twp, PA
PA-309 is currently impassible due to flooding.
- Storm report NWS LWX storm report
FLASH FLOOD — 1 ESE Park Heights, MD
Two to three feet of standing water was reported near the intersection of E 35th street and Hillen Road.
- Storm report NWS LWX storm report
FLASH FLOOD — 2 N Brooklyn Park, MD
Two to three feet of standing water was reported near the intersection of Hanover Street and Frankfurst Ave.
Show 3 earlier updates
- NWS LWX storm report Storm report
- CBS News News
Tornado warning in effect in New Castle, Chester counties as storms hit Philadelphia region
- NWS Mount Holly NJ Bulletin
Updates are captured automatically from official and news sources, and may lag the live source. For the very latest, see NOAA / National Weather Service ↗.