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Flood Warning issued July 30 at 9:59PM CDT until July 31 at 10:00AM CDT by NWS Aberdeen SD

7.0

43.7614° N, 99.4571° W·US-SD

Started 2h ago

Event Details

Typeflood

Severity7.0

Statusactive

Location43.7614°N, 99.4571°W (US-SD)

Started2026-07-31T02:59:00+00:00

Last Updated2026-07-31T05:30:51.9+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

2024 BRULE County, SOUTH DAKOTA Flood (2024)68% match

Flood in SOUTH DAKOTA, 32km from current event, $259K in recorded damage

BRULE County, SOUTH DAKOTADamage: $259K

2009 LYMAN County, SOUTH DAKOTA Flood (2009)67% match

Flood in SOUTH DAKOTA, 4km from current event, $5K in recorded damage

LYMAN County, SOUTH DAKOTADamage: $5K

2019 BRULE County, SOUTH DAKOTA Flood (2019)67% match

Flood in SOUTH DAKOTA, 12km from current event, $5K in recorded damage

BRULE County, SOUTH DAKOTADamage: $5K

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.