Alert archive / South Dakota / River Flood Warnings in 2011

River Flood Warning 4, NWS Rapid City, SD

March 12, 2011Haakon County, Ziebach County, South Dakota

NWS Rapid City, SD issued this river flood warning at Mar 12, 2011, 12:32 PM MST for Haakon County, Ziebach County, South Dakota. It took effect at Mar 12, 2011, 8:00 PM MST. It was in force for 5 days.

The area

The counties it named.

The facts

Issued: Mar 12, 2011, 12:32 PM MST (19:32 UTC)
In effect from: Mar 12, 2011, 8:00 PM MST
Expired: Mar 17, 2011, 9:11 AM MDT
In force: 5 days
Issued by: NWS Rapid City, SD
Flood severity: Moderate

Counties Haakon County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 113 km from the middle of the area, began a volume at 19:34 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 Cheyenne River near Plainview (PLNS2).

Action stage: 15 ft
Minor stage: 17 ft
Moderate stage: 19 ft
Major stage: 20 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06438500, 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 Rapid City, SD wrote its last area forecast discussion before this river flood warning went out at Mar 11, 2:33 PM MST, 21 hours 59 minutes earlier.

Area forecast discussion, Mar 11, 2:33 PM MST, 21 hours 59 minutes before

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The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 12, 2:41 PM MST	River Flood Warning	UNR	Lyman, Tripp	6 days
Mar 12, 3:04 PM MST	Areal Flood Warning	UNR	Jackson	27 hr
Mar 12, 3:16 PM MST	Areal Flood Warning	UNR	Meade	27 hr

Nearby

River Flood Warnings in South Dakota, 2011 Every river flood warning in 2011

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.