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Flash Flood Warning issued July 30 at 9:50PM CDT until July 31 at 12:45AM CDT by NWS Aberdeen SD

8.0

44.3750° N, 100.3567° W·US-SD

Started 2h ago

Event Details

Typeflood

Severity8.0

Statusactive

Location44.3750°N, 100.3567°W (US-SD)

Started2026-07-31T02:50:00+00:00

Last Updated2026-07-31T05:30:52.703+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

2008 HUGHES County, SOUTH DAKOTA Flash Flood (2008)72% match

Flash Flood in SOUTH DAKOTA, 1km from current event, $75K in recorded damage

HUGHES County, SOUTH DAKOTADamage: $75K

2019 HUGHES County, SOUTH DAKOTA Flood (2019)69% match

Flood in SOUTH DAKOTA, 22km from current event, $185K in recorded damage

HUGHES County, SOUTH DAKOTADamage: $185K

2019 LYMAN County, SOUTH DAKOTA Flood (2019)66% match

Flood in SOUTH DAKOTA, 22km from current event, $26K in recorded damage

LYMAN County, SOUTH DAKOTADamage: $26K

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

View on Live Map

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

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