Alert archive / South Dakota / Flash Flood Warnings in 2010

Flash Flood Warning 4, NWS Aberdeen, SD

June 16, 2010Dewey County, South Dakota

NWS Aberdeen, SD issued this flash flood warning at Jun 16, 2010, 10:26 PM MDT for Dewey County, South Dakota. It was in force for 9 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 16, 2010, 10:26 PM MDT (04:26 UTC)
Expired
Jun 17, 2010, 7:42 AM MDT
In force
9 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 04:26 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, 4.4 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-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2010-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 935 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, Bismarck Municip, ND at 00:00Z on 2010-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 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
935 J/kg
Mixed-layer CIN
-190 J/kg
Mixed-layer LCL
1650 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 6:41 PM MDTSevere Thunderstorm WarningABRDewey64 min
Jun 16, 6:54 PM MDTTornado WarningABRDewey51 min
Jun 16, 7:32 PM MDTFlash Flood WarningABRDewey3 hr
Jun 16, 7:45 PM MDTSevere Thunderstorm WarningABRDewey60 min
Jun 16, 8:06 PM MDTTornado WarningABRDewey22 min
Jun 16, 8:44 PM MDTSevere Thunderstorm WarningABRDewey46 min
Jun 16, 9:28 PM MDTSevere Thunderstorm WarningABRDewey62 min
Jun 16, 10:22 PM MDTSevere Thunderstorm WarningABRCampbell, Corson, Dewey, Potter, Walworth38 min
Jun 16, 10:41 PM MDTSevere Thunderstorm WarningABRDewey, Stanley49 min
Jun 16, 11:03 PM MDTSevere Thunderstorm WarningABRCampbell, Edmunds, Faulk, McPherson, Potter, Walworth57 min
Jun 17, 7:49 AM MDTAreal Flood AdvisoryABRDewey24 hr
Jun 17, 12:21 PM MDTRiver Flood WarningABRDewey20 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.