≋floodactive

Flash Flood Warning issued July 28 at 1:01PM MDT until July 28 at 4:00PM MDT by NWS Denver CO

8.0

40.5271° N, 105.3193° W·US-CO

Started 2h ago

Event Details

Typeflood

Severity8.0

Statusactive

Location40.5271°N, 105.3193°W (US-CO)

Started2026-07-28T19:01:00+00:00

Last Updated2026-07-28T21:30:27.833+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

2022 LARIMER County, COLORADO Flash Flood (2022)74% match

Flash Flood in COLORADO, 11km from current event, $250K in recorded damage

LARIMER County, COLORADODamage: $250KFatalities: 2

2023 LARIMER County, COLORADO Flash Flood (2023)71% match

Flash Flood in COLORADO, 21km from current event, $250K in recorded damage

LARIMER County, COLORADODamage: $250K

2021 LARIMER County, COLORADO Flash Flood (2021)71% match

Flash Flood in COLORADO, 9km from current event, $25K in recorded damage

LARIMER County, COLORADODamage: $25K

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

View on Live Map

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

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