Mount Rushmore National Memorial, South Dakota

Regional Weather Alerts


     

Alert: Flood Watch
Area(s): Beadle; Kingsbury; Brookings
Effective: 21apeor34ap -> 22aaeor0aa
Onset: 21apeor0ap -> 22aaeor0aa
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Sioux Falls SD on 21apeor34ap
Headline: Flood Watch issued August 21 at 3:34PM CDT until August 22 at 10:00AM CDT by NWS Sioux Falls SD
Description: * WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...A portion of east central South Dakota, including the
following counties, Beadle, Brookings and Kingsbury.

* WHEN...From 7 PM CDT this evening through Friday morning.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
- Confidence is increasing in multiple rounds of storms with
heavy rainfall rates tracking through the region overnight
into Friday morning.
- Stay up to date with the latest river observations and
forecasts at: www.water.noaa.gov

Alert: Flood Watch
Area(s): Spink; Clark; Codington; Grant; Hamlin; Deuel
Effective: 21apeor29ap -> 22aaeor0aa
Onset: 21apeor0ap -> 22aaeor0aa
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Aberdeen SD on 21apeor29ap
Headline: Flood Watch issued August 21 at 3:29PM CDT until August 22 at 10:00AM CDT by NWS Aberdeen SD
Description: * WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...A portion of northeast South Dakota, including the
following counties, Clark, Codington, Deuel, Grant, Hamlin and
Spink.

* WHEN...From 7 PM CDT this evening through Friday morning.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
- Multiple rounds of storms are possible this afternoon,
evening and through the overnight. Most of this area soils
are already saturated.
- http://www.weather.gov/safety/flood

Alert: Heat Advisory
Area(s): Stanley; Hughes; Jones; Lyman
Effective: 21apeor33ap -> 21apeor0ap
Onset: 21apeor0ap -> 21apeor0ap
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Aberdeen SD on 21apeor33ap
Headline: Heat Advisory issued August 21 at 12:33PM CDT until August 21 at 8:00PM CDT by NWS Aberdeen SD
Description: * WHAT...Heat index values up to 100 expected.

* WHERE...Hughes, Jones, Lyman, and Stanley Counties.

* WHEN...Until 8 PM CDT /7 PM MDT/ this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

Alert: Flood Warning
Area(s): Brookings, SD
Effective: 21aaeor58aa
Onset: 21aaeor58aa -> 22apeor0ap
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Sioux Falls SD on 21aaeor58aa
Headline: Flood Warning issued August 21 at 9:58AM CDT by NWS Sioux Falls SD
Description: ...The Flood Warning continues for the following river in South
Dakota...

Big Sioux River near Bruce affecting Brookings County.

Big Sioux River near Estelline affecting Hamlin and Brookings
Counties.

* WHAT...Moderate flooding is occurring.

* WHERE...Big Sioux River near Bruce.

* WHEN...Until further notice.

* IMPACTS...At 10.5 feet, 198th Street and 199th Street between
466th and 467th avenues are flooded, as is 202nd Street between
465th and 467th avenues, and 465th Avenue between 203rd and 204th
streets.

* ADDITIONAL DETAILS...
- At 8:45 AM CDT Thursday the stage was 10.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:45 AM CDT Thursday was 10.2 feet.
- Forecast...No forecast is available for this location.
- Flood stage is 8.0 feet.
- Stay up to date with the latest river observations and
forecasts at: www.water.noaa.gov

Alert: Flood Warning
Area(s): Brookings, SD; Hamlin, SD
Effective: 21aaeor58aa
Onset: 21aaeor58aa -> 22apeor0ap
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Sioux Falls SD on 21aaeor58aa
Headline: Flood Warning issued August 21 at 9:58AM CDT by NWS Sioux Falls SD
Description: ...The Flood Warning continues for the following river in South
Dakota...

Big Sioux River near Bruce affecting Brookings County.

Big Sioux River near Estelline affecting Hamlin and Brookings
Counties.

* WHAT...Minor flooding is occurring.

* WHERE...Big Sioux River near Estelline.

* WHEN...Until further notice.

* IMPACTS...At 1645.5 feet, widespread flooding of agricultural
lands begins.

* ADDITIONAL DETAILS...
- At 9:00 AM CDT Thursday the stage was 1644.9 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:00 AM CDT Thursday was 1645.2 feet.
- Forecast...No forecast is available for this location.
- Flood stage is 1644.0 feet.
- Stay up to date with the latest river observations and
forecasts at: www.water.noaa.gov

Alert: Flood Warning
Area(s): Brown, SD
Effective: 21aaeor57aa
Onset: 21aaeor57aa -> 22apeor0ap
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Aberdeen SD on 21aaeor57aa
Headline: Flood Warning issued August 21 at 9:57AM CDT by NWS Aberdeen SD
Description: ...The Flood Warning continues for the following rivers in South
Dakota...

James River At Columbia affecting Brown County.

.For sites with a river forecast, the forecast includes
precipitation through the next 24 hours. Any future precipitation
could affect the forecasts.

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...James River at Columbia.

* WHEN...Until further notice.

* IMPACTS...At 15.0 feet, Significant amounts of agricultural lands
are flooded.

* ADDITIONAL DETAILS...
- At 9:00 AM CDT Thursday the stage was 15.1 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:00 AM CDT Thursday was 15.2 feet.
- Forecast...The river is expected to rise to a crest of 15.5
feet Sunday evening.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood