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Flood Warning issued September 28 at 6:30AM CDT until September 28 at 12:30PM CDT by NWS Aberdeen SD

7.0
45.2120°N, 101.3680°W·US-SD
Started 1h ago
NWS flood alerts data as of
Event Details
Typeflood
Severity7.0
Statusactive
Location45.2120°N, 101.3680°W (SD)
Started2026-09-28T11:30:00+00:00
Last Updated2026-09-28T13:00:48.779+00:00
Sourcenoaa_ahps
Source URLapi.weather.gov
Confidence1.00
Impact Zones
Modeled Inundation
Where the National Water Model's latest analysis puts water inside the warning area. Experimental; the warning polygon is the official boundary.
NWS polygon
Severe Impact Zone
Active flood warning area. Significant property damage possible.
NWS polygon

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

Impact Analysis

This event's zone is the NWS warning polygon. Population and structure estimates are not computed inside NWS polygons yet, so none are shown.

Historical Comparison
2019 DEWEY County, SOUTH DAKOTA Flood68% match

Flood in SOUTH DAKOTA, 27km from current event, $199K in recorded damage

DEWEY County, SOUTH DAKOTADamage: $199K
2008 ZIEBACH County, SOUTH DAKOTA Flood66% match

Flood in SOUTH DAKOTA, 23km from current event, $200K in recorded damage

ZIEBACH County, SOUTH DAKOTADamage: $200K
2010 DEWEY County, SOUTH DAKOTA Flash Flood66% match

Flash Flood in SOUTH DAKOTA, 21km from current event, $100K in recorded damage

DEWEY County, SOUTH DAKOTADamage: $100K

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

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Related
Dewey County, SD disaster historyAll US hazard profilesScoring methodology

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