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Flash Flood Warning issued July 28 at 5:16PM EDT until July 28 at 8:15PM EDT by NWS Baltimore MD/Washington DC

8.0

39.2292° N, 76.5450° W·US-MD

Started 2h ago

Event Details

Typeflood

Severity8.0

Statusactive

Location39.2292°N, 76.5450°W (US-MD)

Started2026-07-28T21:16:00+00:00

Last Updated2026-07-28T23:20:25.044+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

2018 BALTIMORE County, MARYLAND Flash Flood (2018)77% match

Flash Flood in MARYLAND, 17km from current event, $9M in recorded damage

BALTIMORE County, MARYLANDDamage: $8.6M

2014 ANNE ARUNDEL County, MARYLAND Flash Flood (2014)76% match

Flash Flood in MARYLAND, 10km from current event, $3M in recorded damage

ANNE ARUNDEL County, MARYLANDDamage: $2.8M

2016 HOWARD County, MARYLAND Flash Flood (2016)76% match

Flash Flood in MARYLAND, 22km from current event, $22M in recorded damage

HOWARD County, MARYLANDDamage: $22.4MFatalities: 2

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

View on Live Map

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

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