Alert archive / South Dakota / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 375

June 1, 199716 counties in South Dakota; 4 counties in Wyoming

The Storm Prediction Center issued this severe thunderstorm watch at Jun 1, 1997, 2:45 PM MDT for 16 counties in South Dakota; 4 counties in Wyoming. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 1, 1997, 2:45 PM MDT (20:45 UTC)
Expired
Jun 1, 1997, 9:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Butte County, SD, Campbell County, SD, Corson County, SD, Custer County, SD, Dewey County, SD, Edmunds County, SD, Fall River County, SD, Haakon County, SD, Lawrence County, SD, McPherson County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD, Potter County, SD, Walworth County, SD, Ziebach County, SD, Converse County, WY, Natrona County, WY, Niobrara County, WY, Weston County, WY

Warnings issued inside it

12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 1, 4:25 PM MDTSevere Thunderstorm WarningCYSNiobrara45 min
Jun 1, 4:42 PM MDTSevere Thunderstorm WarningCYSNiobrara63 min
Jun 1, 4:50 PM MDTSevere Thunderstorm WarningUNRCuster, Pennington30 min
Jun 1, 5:07 PM MDTSevere Thunderstorm WarningCYSNiobrara48 min
Jun 1, 5:20 PM MDTSevere Thunderstorm WarningUNRCuster, Pennington30 min
Jun 1, 5:47 PM MDTSevere Thunderstorm WarningABRMcPherson43 min
Jun 1, 6:20 PM MDTSevere Thunderstorm WarningUNRFall River30 min
Jun 1, 6:36 PM MDTSevere Thunderstorm WarningABRMcPherson44 min
Jun 1, 7:23 PM MDTSevere Thunderstorm WarningABRWalworth47 min
Jun 1, 7:36 PM MDTSevere Thunderstorm WarningABRMcPherson44 min
Jun 1, 7:36 PM MDTSevere Thunderstorm WarningRIWNatrona49 min
Jun 1, 7:53 PM MDTSevere Thunderstorm WarningABRCampbell, McPherson42 min

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 8.8 hours before the alert went out and 84 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, Rapid City, SD at 12:00Z on 1997-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Rapid City, SD at 12:00Z on 1997-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 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
1 J/kg
Mixed-layer CIN
-382 J/kg
Mixed-layer LCL
2462 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
198 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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 31, 6:30 PM MDTSevere Thunderstorm WatchSPCBig Horn, Fremont, Hot Springs, Park, Sublette, Teton and 1 more6 hr
Jun 1, 4:45 PM MDTTornado WatchSPCGoshen, Laramie6 hr

Nearby

Severe Thunderstorm Watches in South Dakota, 1997Severe Thunderstorm Watches in Wyoming, 1997Every severe thunderstorm watch 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.