Alert archive / South Dakota / Flash Flood Warnings in 1997

Flash Flood Warning 9, NWS Rapid City, SD

July 11, 1997Edmunds County, South Dakota

NWS Rapid City, SD issued this flash flood warning at Jul 11, 1997, 7:43 PM CDT for Edmunds County, South Dakota. It was in force for 8 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
Jul 11, 1997, 7:43 PM CDT (00:43 UTC)
Expired
Jul 12, 1997, 3:40 AM CDT
In force
8 hr
Issued by
NWS Rapid City, SD
Area
Whole counties

County Edmunds County, SD

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.7 hours before the alert went out and 189 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 1997-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3242 joules per kilogram.LCLEL10008507005003002001001 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 1997-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -54 square meters per square second.1939Sfc1 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
3242 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1128 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-54 m²/s²
0-3 km storm-relative helicity
-67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 2:36 PM CDTSevere Thunderstorm WarningUNRLawrence44 min
Jul 12, 4:38 PM CDTSevere Thunderstorm WarningUNRButte, Lawrence32 min
Jul 12, 4:41 PM CDTSevere Thunderstorm WarningUNRFall River49 min
Jul 12, 4:48 PM CDTSevere Thunderstorm WarningUNRLawrence, Meade62 min
Jul 12, 5:23 PM CDTSevere Thunderstorm WarningUNRFall River62 min
Jul 12, 6:14 PM CDTSevere Thunderstorm WarningUNR61 min
Jul 11, 7:48 PM CDTSevere Thunderstorm WarningUNRWeston62 min
Jul 12, 3:25 PM CDTSevere Thunderstorm WarningUNRCampbell65 min
Jul 12, 3:29 PM CDTSevere Thunderstorm WarningUNRWeston61 min

Nearby

Flash Flood Warnings in South Dakota, 1997Every flash flood warning in 1997

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.