Alert archive / South Dakota / Flash Flood Warnings in 2010

Flash Flood Warning 18, NWS Aberdeen, SD

September 15, 2010Codington County, Deuel County, Hamlin County, South Dakota

NWS Aberdeen, SD issued this flash flood warning at Sep 15, 2010, 5:20 PM CDT for Codington County, Deuel County, Hamlin 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
Sep 15, 2010, 5:20 PM CDT (22:20 UTC)
Expired
Sep 15, 2010, 11:30 PM CDT
In force
6 hr
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Flood severity
None

Counties Codington County, SD, Deuel County, SD, Hamlin County, SD

The radar

The Aberdeen radar (KABR), 131 km from the middle of the area, began a volume at 22:21 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

Minneapolis, MN (KMPX), launched 12:00Z, 10.3 hours before the alert went out and 269 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, Minneapolis, MN at 12:00Z on 2010-09-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Minneapolis, MN at 12:00Z on 2010-09-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 210 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
732 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
210 m²/s²
0-3 km storm-relative helicity
302 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 14, 9:42 PM CDTSevere Thunderstorm WarningABRBuffalo, Lyman48 min
Sep 14, 10:14 PM CDTSevere Thunderstorm WarningABRBuffalo, Hughes, Lyman61 min
Sep 14, 10:19 PM CDTSevere Thunderstorm WarningABRHughes, Stanley, Sully41 min
Sep 15, 12:17 AM CDTSevere Thunderstorm WarningABRClark, Codington, Hamlin43 min
Sep 15, 12:54 AM CDTSevere Thunderstorm WarningABRCodington, Deuel, Grant, Hamlin19 min
Sep 15, 4:36 AM CDTSevere Thunderstorm WarningABRFaulk, Hand, Hyde24 min
Sep 15, 8:21 AM CDTSevere Thunderstorm WarningABRHughes, Sully21 min
Sep 15, 1:13 PM CDTAreal Flood AdvisoryABRHand24 hr
Sep 15, 5:47 PM CDTAreal Flood AdvisoryABRClark6 hr

Nearby

Flash Flood Warnings in South Dakota, 2010Every flash flood warning in 2010

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.