Alert archive / South Dakota / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 112, NWS Sioux Falls, SD

September 2, 1995Hamlin County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Sep 2, 1995, 6:25 AM CDT for Hamlin County, South Dakota. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Sep 2, 1995, 6:25 AM CDT (11:25 UTC)
Expired
Sep 2, 1995, 6:55 AM CDT
In force
30 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Hamlin County, SD

The radar

The Sioux Falls radar (KFSD), 126 km from the middle of the area, began a volume at 11:25 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

Aberdeen, SD (KABR), launched 00:00Z, 11.4 hours before the alert went out and 99 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, Aberdeen, SD at 00:00Z on 1995-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1342 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, Aberdeen, SD at 00:00Z on 1995-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
1342 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
1682 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFSD 021125 RRA
SVRFSD
SDC057-021155-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
625 AM CDT SAT SEP 2 1995

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 655 AM CDT 
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN EAST CENTRAL SOUTH DAKOTA

   ...WESTERN HAMLIN COUNTY
 
AT 621 AM CDT...A SEVERE THUNDERSTORM WAS DETECTED BY SIOUX FALLS
DOPPLER RADAR 13 MILES SOUTHEAST OF CLARK  OR 5 MILES NORTHWEST OF
HAZEL MOVING SOUTH AT 30 MPH. EARLIER THIS SEVERE THUNDERSTORM
PRODUCE NICKEL SIZE HAIL IN NORTHERN CLARK COUNTY.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
HAZEL                    AROUND 632 AM CDT
BRYANT                   AROUND 649 AM CDT
 
IF SEVERE WEATHER IS OBSERVED...CONTACT YOUR LOCAL LAW ENFORCEMENT
AGENCY AND ASK THEM TO RELAY YOUR INFORMATION TO THE NATIONAL
WEATHER SERVICE.

WB

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 5:20 AM CDTSevere Thunderstorm WarningFSDClark30 min
Sep 2, 5:56 AM CDTSevere Thunderstorm WarningFSDClark52 min
Sep 2, 6:54 AM CDTSevere Thunderstorm WarningFSDKingsbury40 min
Sep 2, 7:58 AM CDTSevere Thunderstorm WarningFSDMcCook47 min
Sep 2, 8:07 AM CDTSevere Thunderstorm WarningFSDMinnehaha, Moody24 min
Sep 2, 8:40 AM CDTSevere Thunderstorm WarningFSDTurner45 min
Sep 2, 9:20 AM CDTSevere Thunderstorm WarningFSDYankton41 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1995Every severe thunderstorm warning in 1995

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.