≋floodactive

Flash Flood Warning issued August 5 at 2:50PM EDT until August 5 at 7:00PM EDT by NWS Mount Holly NJ

8.0

40.3511° N, 74.9633° W·US-NJ

Started 3h ago

Event Details

Typeflood

Severity8.0

Statusactive

Location40.3511°N, 74.9633°W (US-NJ)

Started2026-08-05T18:50:00+00:00

Last Updated2026-08-05T22:01:01.314+00:00

Sourcenoaa_ahps

Source URLapi.weather.gov

Confidence1.00

Impact Zones

Catastrophic Impact Zone

Flash flooding or major flood stage. Immediate danger to life and property.

NWS polygon

Zone estimates are based on scientific models and may differ from actual local conditions.

Impact Analysis

Note: Zone 1 uses NWS polygon geometry. Exposure for this zone is pending polygon-based computation — totals reflect outer zones only.

Population from ACS 5-Year 2022 tract sampling; structure counts from Microsoft Building Footprints or Census ACS housing data, capped by USGS NLCD 2021 developed land. Estimates for situational awareness — not for actuarial, regulatory, or underwriting use.

Historical Comparison

2021 MERCER County, NEW JERSEY Flash Flood (2021)85% match

Flash Flood in NEW JERSEY, 5km from current event, $50M in recorded damage

MERCER County, NEW JERSEYDamage: $50.0MFatalities: 2

2021 BUCKS County, PENNSYLVANIA Flash Flood (2021)84% match

Flash Flood in PENNSYLVANIA, 3km from current event, $25M in recorded damage

BUCKS County, PENNSYLVANIADamage: $25.0MFatalities: 1

2021 BUCKS County, PENNSYLVANIA Flash Flood (2021)78% match

Flash Flood in PENNSYLVANIA, 20km from current event, $25M in recorded damage

BUCKS County, PENNSYLVANIADamage: $25.0M

Historical comparison based on peril type, geography, and severity. Past events do not predict future outcomes.

View on Live Map

US-NJ flood hazard profile All US hazard profiles Scoring methodology

Zone estimates are based on scientific models and may differ from actual local conditions.