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Flash Flood Warning issued July 27 at 5:49PM EDT until July 27 at 10:00PM EDT by NWS Mount Holly NJ

8.0

40.5682° N, 74.3055° W·US-NJ

Started 3h ago

Event Details

Typeflood

Severity8.0

Statusactive

Location40.5682°N, 74.3055°W (US-NJ)

Started2026-07-27T21:49:00+00:00

Last Updated2026-07-28T00:50:50.673+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 MIDDLESEX County, NEW JERSEY Flash Flood (2021)81% match

Flash Flood in NEW JERSEY, 16km from current event, $50M in recorded damage

MIDDLESEX County, NEW JERSEYDamage: $50.0MFatalities: 3

2011 MIDDLESEX County, NEW JERSEY Flood (2011)80% match

Flood in NEW JERSEY, 9km from current event, $50M in recorded damage

MIDDLESEX County, NEW JERSEYDamage: $50.0MFatalities: 1

2021 RICHMOND County, NEW YORK Flash Flood (2021)79% match

Flash Flood in NEW YORK, 20km from current event, $60M in recorded damage

RICHMOND County, NEW YORKDamage: $60.0M

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.