Alert archive / South Dakota / Flash Flood Warnings in 1997

Flash Flood Warning 2, NWS Rapid City, SD

June 1, 1997Bennett County, Mellette County, Todd County, South Dakota

NWS Rapid City, SD issued this flash flood warning at Jun 1, 1997, 8:22 PM MDT for Bennett County, Mellette County, Todd County, South Dakota. It was in force for 5 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 1, 1997, 8:22 PM MDT (02:22 UTC)
Expired
Jun 2, 1997, 1:10 AM MDT
In force
5 hr
Issued by
NWS Rapid City, SD
Area
Whole counties

Counties Bennett County, SD, Mellette County, SD, Todd County, SD

The radar

The North Platte radar (KLNX), 157 km from the middle of the area, began a volume at 02:25 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, 2.4 hours before the alert went out and 247 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 1997-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 185 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 1997-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
185 J/kg
Mixed-layer CIN
-208 J/kg
Mixed-layer LCL
1822 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

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
Jun 1, 6:15 PM MDTSevere Thunderstorm WarningUNRMellette, Todd35 min
Jun 1, 6:20 PM MDTSevere Thunderstorm WarningUNRFall River30 min
Jun 1, 6:55 PM MDTFlash Flood WarningUNRMellette, Todd4 hr
Jun 1, 7:00 PM MDTSevere Thunderstorm WarningUNRBennett35 min
Jun 1, 7:04 PM MDTSevere Thunderstorm WarningUNRMellette, Todd61 min
Jun 1, 7:31 PM MDTSevere Thunderstorm WarningUNRBennett, Jackson, Mellette29 min
Jun 1, 8:10 PM MDTSevere Thunderstorm WarningUNRBennett, Todd30 min
Jun 1, 8:34 PM MDTSevere Thunderstorm WarningUNRBennett, Todd46 min
Jun 2, 4:15 PM MDTSevere Thunderstorm WarningUNRPennington45 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; radar from the NEXRAD Level II archive.