Alert archive / South Dakota / Flash Flood Warnings in 2024

Flash Flood Warning 13, NWS Aberdeen, SD

August 21, 2024Jones County, Lyman County, South Dakota

NWS Aberdeen, SD issued this flash flood warning at Aug 21, 2024, 11:09 PM CDT for Jones County, Lyman 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
Aug 21, 2024, 11:09 PM CDT (04:09 UTC)
Expired
Aug 22, 2024, 5:15 AM CDT
In force
6 hr
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Flood severity
None

Counties Jones County, SD, Lyman County, SD

The radar

The Rapid City radar (KUDX), 206 km from the middle of the area, began a volume at 04:10 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.2 hours before the alert went out and 312 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2024-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2959 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2024-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2959 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
1365 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 7:44 PM CDTSevere Thunderstorm WarningABRJones, Stanley61 min
Aug 21, 8:30 PM CDTSevere Thunderstorm WarningABRJones, Lyman, Stanley60 min
Aug 21, 8:32 PM CDTFlash Flood WarningABRJones, Stanley6 hr
Aug 21, 8:56 PM CDTSevere Thunderstorm Warning Considerable damage threatABRJones49 min
Aug 21, 9:44 PM CDTSevere Thunderstorm WarningABRJones, Lyman46 min
Aug 21, 9:47 PM CDTFlash Flood WarningABRJones, Stanley5 hr
Aug 21, 9:49 PM CDTSpecial Weather StatementABRHughes, Hyde26 min
Aug 21, 9:56 PM CDTSevere Thunderstorm WarningABRJones, Stanley49 min
Aug 21, 10:02 PM CDTSpecial Weather StatementABRDewey28 min
Aug 21, 10:13 PM CDTSevere Thunderstorm WarningABRDewey, Stanley23 min
Aug 21, 10:17 PM CDTFlash Flood WarningABRHughes, Stanley6 hr
Aug 21, 10:31 PM CDTSevere Thunderstorm WarningABRJones44 min
Aug 21, 11:24 PM CDTFlash Flood WarningABRHughes, Hyde6 hr

Nearby

Flash Flood Warnings in South Dakota, 2024Every flash flood warning in 2024

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.