Alert archive / South Dakota / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 13, NWS Sioux Falls, SD

May 18, 1996Charles Mix County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 18, 1996, 8:39 PM CDT for Charles Mix County, South Dakota. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 18, 1996, 8:39 PM CDT (01:39 UTC)
Expired: May 18, 1996, 9:25 PM CDT
In force: 46 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Charles Mix County, SD

The radar

The Sioux Falls radar (KFSD), 156 km from the middle of the area, began a volume at 01:43 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, 1.7 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2021 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 190140
SVRFSD
SDC023-190225-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
839 PM CDT SAT MAY 18 1996

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 925 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHEAST SOUTH DAKOTA

   ...NORTHERN CHARLES MIX COUNTY
 
AT 837 PM CDT...A SEVERE THUNDERSTORM WAS DETECTED BY SIOUX FALLS
DOPPLER RADAR 20 MILES SOUTH OF CHAMBERLAIN  OR 15 MILES WEST OF
ACADEMY MOVING EAST AT 35 MPH.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
ACADEMY                  AROUND 900 PM CDT
PLATTE                   AROUND 920 PM CDT
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER 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.

REMEMBERn...SEVERE THUNDERSTORMS CAN OFTEN PRODUCE A TORNADO WITH
LITTLE OR NO ADVANCE WARNING.  A TORNADO WATCH IS IN EFFECT UNTIL
1 AM CDT.

CHAPMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 8:22 PM CDT	Severe Thunderstorm Warning	FSD	Brule	43 min
May 18, 9:02 PM CDT	Tornado Warning	FSD	Brule	33 min
May 18, 9:33 PM CDT	Severe Thunderstorm Warning	FSD	Miner, Sanborn	27 min
May 18, 9:40 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	45 min
May 18, 10:20 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	45 min
May 18, 10:41 PM CDT	Tornado Warning	FSD	Brookings	34 min
May 18, 10:59 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	31 min
May 18, 11:25 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	30 min
May 18, 11:57 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	28 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1996 Every severe thunderstorm warning in 1996

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.