Alert archive / South Dakota / Flash Flood Warnings in 2022

Flash Flood Warning 4, NWS Aberdeen, SD

June 23, 2022Dewey County, South Dakota

NWS Aberdeen, SD issued this flash flood warning at Jun 23, 2022, 8:59 PM MDT for Dewey County, South Dakota. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 23, 2022, 8:59 PM MDT (02:59 UTC)
Expired: Jun 24, 2022, 3:00 AM MDT
In force: 6 hr
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Flood severity: None

County Dewey County, SD

The radar

The Bismarck radar (KBIS), 180 km from the middle of the area, began a volume at 03:00 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.0 hours before the alert went out and 180 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 159 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 3234 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Aberdeen, SD wrote its last area forecast discussion before this flash flood warning went out at Jun 23, 7:28 PM MDT, 1 hour 31 minutes earlier.

Area forecast discussion, Jun 23, 7:28 PM MDT, 1 hour 31 minutes before

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In the hours before

Local storm report, Jun 23, 6:21 PM MDT, 2 hours 38 minutes before

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Special weather statement, Jun 23, 6:21 PM MDT, 2 hours 38 minutes before

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Special weather statement, Jun 23, 7:18 PM MDT, 1 hour 41 minutes before

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Local storm report, Jun 23, 8:37 PM MDT, 22 minutes before

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Special weather statement, Jun 23, 8:45 PM MDT, 14 minutes before

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Special weather statement, Jun 23, 8:51 PM MDT, 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 6:21 PM MDT	Special Weather Statement	ABR	Campbell	39 min
Jun 23, 7:18 PM MDT	Special Weather Statement	ABR	Dewey	27 min
Jun 23, 7:29 PM MDT	Severe Thunderstorm Warning	ABR	Dewey	46 min
Jun 23, 8:14 PM MDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Dewey	37 min
Jun 23, 8:45 PM MDT	Special Weather Statement	ABR	Dewey	30 min
Jun 23, 8:51 PM MDT	Special Weather Statement	ABR	Dewey	24 min
Jun 23, 9:41 PM MDT	Severe Thunderstorm Warning	ABR	Dewey, Potter	49 min
Jun 23, 9:45 PM MDT	Severe Thunderstorm Warning	ABR	Campbell	16 min
Jun 23, 10:03 PM MDT	Special Weather Statement	ABR	Corson	27 min
Jun 23, 10:38 PM MDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Potter, Walworth	49 min
Jun 24, 2:50 PM MDT	Special Weather Statement	ABR	Dewey	25 min
Jun 24, 2:58 PM MDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Dewey	62 min
Jun 24, 3:35 PM MDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	40 min
Jun 24, 3:52 PM MDT	Special Weather Statement	ABR	Dewey	23 min
Jun 24, 4:05 PM MDT	Special Weather Statement	ABR	Hughes	25 min
Jun 24, 4:13 PM MDT	Severe Thunderstorm Warning	ABR	Hughes, Jones, Lyman, Stanley	44 min
Jun 24, 5:04 PM MDT	Severe Thunderstorm Warning	ABR	Hughes, Sully	41 min
Jun 24, 5:17 PM MDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Stanley, Sully	58 min
Jun 24, 5:37 PM MDT	Severe Thunderstorm Warning	ABR	Faulk, Hyde, Potter, Sully	53 min

Nearby

Flash Flood Warnings in South Dakota, 2022 Every flash flood warning in 2022

Sources

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