Alert archive / South Dakota / River Flood Warnings in 2019

River Flood Warning 266, NWS Sioux Falls, SD

August 18, 2019Brookings County, Moody County, South Dakota

NWS Sioux Falls, SD issued this river flood warning at Aug 18, 2019, 10:37 AM CDT for Brookings County, Moody County, South Dakota. It took effect at Aug 21, 2019, 7:00 AM CDT. It was in force for 62 hr.

The area

The counties it named.

The facts

Issued: Aug 18, 2019, 10:37 AM CDT (15:37 UTC)
In effect from: Aug 21, 2019, 7:00 AM CDT
Expired: Aug 23, 2019, 8:59 PM CDT
In force: 62 hr
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Minor

Counties Brookings County, SD, Moody County, SD

The radar

The Sioux Falls radar (KFSD), 68 km from the middle of the area, began a volume at 15:36 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Big Sioux River near Brookings (BRKS2).

Action stage: 8 ft
Minor stage: 9 ft
Moderate stage: 10.5 ft
Major stage: 15 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06480000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sioux Falls, SD wrote its last area forecast discussion before this river flood warning went out at Aug 18, 6:24 AM CDT, 4 hours 13 minutes earlier.

Area forecast discussion, Aug 18, 6:24 AM CDT, 4 hours 13 minutes before

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Hazardous weather outlook, Aug 18, 4:15 AM CDT, 6 hours 22 minutes before

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In the hours before

Local storm report, Aug 18, 7:41 AM CDT, 2 hours 56 minutes before

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Local storm report, Aug 18, 7:43 AM CDT, 2 hours 54 minutes before

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Local storm report, Aug 18, 8:58 AM CDT, 1 hour 39 minutes before

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Local storm report, Aug 18, 9:26 AM CDT, 1 hour 11 minutes before

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Local storm report, Aug 18, 9:28 AM CDT, 1 hour 9 minutes before

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Local storm report, Aug 18, 10:02 AM CDT, 35 minutes before

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The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 17, 7:10 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	50 min
Aug 17, 7:12 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	33 min
Aug 17, 7:16 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule	44 min
Aug 17, 7:41 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas	49 min
Aug 17, 7:43 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Charles Mix, Gregory, Jerauld	47 min
Aug 17, 8:06 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Charles Mix, Davison, Douglas, Gregory, Hanson and 4 more	39 min
Aug 17, 8:24 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Davison, Douglas, Hutchinson	36 min
Aug 17, 8:40 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Douglas, Hanson, Hutchinson, Lake, McCook and 2 more	50 min
Aug 17, 9:18 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Hanson, Hutchinson, Kingsbury, Lake, Lincoln and 5 more	42 min
Aug 17, 9:52 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Minnehaha, Moody	38 min
Aug 17, 10:02 PM CDT	Tornado Warning	FSD	Brookings, Moody	12 min
Aug 17, 10:46 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	44 min
Aug 17, 10:41 PM CDT	Tornado Warning	FSD	Lyon, Osceola	9 min
Aug 17, 11:17 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson, O'Brien, Osceola, Sioux	43 min
Aug 18, 12:59 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth	46 min
Aug 17, 11:02 PM CDT	Tornado Warning	FSD	Cottonwood, Jackson, Nobles	12 min

Nearby

River Flood Warnings in South Dakota, 2019 Every river flood warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.