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Flash Flood Warning issued July 30 at 5:41AM MDT until July 30 at 9:00AM MDT by NWS Glasgow MT

8.0

47.8433° N, 106.5778° W·US-MT

Started 1h ago

Event Details

Typeflood

Severity8.0

Statusactive

Location47.8433°N, 106.5778°W (US-MT)

Started2026-07-30T11:41:00+00:00

Last Updated2026-07-30T13:20:44.171+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

2014 VALLEY County, MONTANA Flash Flood (2014)62% match

Flash Flood in MONTANA, 42km from current event, $150K in recorded damage

VALLEY County, MONTANADamage: $150K

2014 VALLEY County, MONTANA Flood (2014)61% match

Flood in MONTANA, 58km from current event, $1M in recorded damage

VALLEY County, MONTANADamage: $1.1M

2010 VALLEY County, MONTANA Flash Flood (2010)59% match

Flash Flood in MONTANA, 19km from current event, $1K in recorded damage

VALLEY County, MONTANADamage: $1K

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

View on Live Map

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

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