Alert archive / South Dakota / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 111, NWS Sioux Falls, SD

September 2, 1995Clark County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Sep 2, 1995, 5:56 AM CDT for Clark County, South Dakota. It was in force for 52 min.

The area

The counties it named.

The facts

Issued: Sep 2, 1995, 5:56 AM CDT (10:56 UTC)
Expired: Sep 2, 1995, 6:48 AM CDT
In force: 52 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Clark County, SD

The radar

The Aberdeen radar (KABR), 85 km from the middle of the area, began a volume at 10:58 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, 10.9 hours before the alert went out and 53 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 021056 RRA
SVRFSD
SDC025-021200-

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

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 AM CDT 
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN EAST CENTRAL SOUTH DAKOTA

   ...EASTERN CLARK COUNTY
 
AT 554 AM CDT...A SEVERE THUNDERSTORM WAS DETECTED BY SIOUX FALLS
DOPPLER RADAR 13 MILES NORTH OF CLARK  OR 3 MILES SOUTHWEST OF
CROCKER  MOVING SOUTH AT 30 MPH.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
RAYMOND                  AROUND 617 AM CDT
CLARK                    AROUND 621 AM CDT
ELROD                    AROUND 628 AM CDT
NAPLES                   AROUND 645 AM CDT
VIENNA                   AROUND 654 AM CDT

THIIS WARNING REPLACES THE WARNING THAT WAS IN EFFECT FOR NORTHERN
CLARK COUNTY UNTIL 550 AM CDT.

WB
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTE@R FROM THE WEATHER IN A
STRONG...REINFORCED BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 5:20 AM CDT	Severe Thunderstorm Warning	FSD	Clark	30 min
Sep 2, 6:25 AM CDT	Severe Thunderstorm Warning	FSD	Hamlin	30 min
Sep 2, 6:54 AM CDT	Severe Thunderstorm Warning	FSD	Kingsbury	40 min
Sep 2, 7:58 AM CDT	Severe Thunderstorm Warning	FSD	McCook	47 min
Sep 2, 8:07 AM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	24 min
Sep 2, 8:40 AM CDT	Severe Thunderstorm Warning	FSD	Turner	45 min
Sep 2, 9:20 AM CDT	Severe Thunderstorm Warning	FSD	Yankton	41 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1995 Every 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.