Alert archive / South Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 220, NWS Sioux Falls, SD

August 7, 2000Charles Mix County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 7, 2000, 8:42 PM CDT for Charles Mix County, South Dakota. It was in force for 33 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: Aug 7, 2000, 8:42 PM CDT (01:42 UTC)
Expired: Aug 7, 2000, 9:15 PM CDT
In force: 33 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 01:42 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 7, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

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: 1881 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 1333 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFSD 080143
SVRFSD
SDC023-080215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
842 PM CDT MON AUG 7 2000

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CHARLES MIX COUNTY IN SOUTH CENTRAL SOUTH DAKOTA

* UNTIL 915 PM CDT

* AT 842 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES SOUTH OF RAVINIA...OR ABOUT 5 MILES
  EAST OF PICKSTOWN...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WAGNER AROUND 850 PM CDT 
  DANTE AROUND 855 PM CDT

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 7, 8:40 PM CDT, 2 minutes earlier.

Area forecast discussion, Aug 7, 8:40 PM CDT, 2 minutes before

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
840 PM CDT MON AUG 7 2000

WL BE CLEANING UP THE ZONES AS THE EVENING PROGRESSES...BUT ACTIVITY
CONTS TO REDEVELOP ALONG AND N OF A WMFNT WHICH IS STRETCHING FM
NCNTRL NEB TO SRN MN...AND WL RMN RATHER STATIONARY THRU THE NIGHT.
UPR LVL DISTRUBANCE WITH PLENTY OF LIFT WL EXIT THE FSD CWA AFT
06Z HOWEVER...WHICH WL LIMIT OR STOP ANY TS ACTIVITY. SVR TSTM
WATCHES STILL IN EFFECT FOR MUCH OF FSD CWA THIS EVENING...EXCEPT
THE SIOUX CITY AREA. NLG PROFILER STILL SHOWS GOOD LLVL INFLOW OF 35
KTS COUPLED WITH STRONG VEERING DIRECTION. FIRST WATCH WL EXPIRE AT
10PM AND WsL WATCH SPC TO SEE IF ANY EXTENSIONS ARE IN THE OFFING.

.FSD...NONE
 FUHS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 7:01 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas	29 min
Aug 7, 7:01 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	44 min
Aug 7, 7:01 PM CDT	Severe Thunderstorm Warning	FSD	McCook	44 min
Aug 7, 7:09 PM CDT	Tornado Warning	FSD	Davison	36 min
Aug 7, 7:12 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson	33 min
Aug 7, 7:26 PM CDT	Severe Thunderstorm Warning	FSD	Lake	34 min
Aug 7, 7:29 PM CDT	Severe Thunderstorm Warning	FSD	Moody	31 min
Aug 7, 7:41 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	34 min
Aug 7, 7:42 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	48 min
Aug 7, 7:48 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson	42 min
Aug 7, 8:32 PM CDT	Tornado Warning	FSD	Bon Homme, Yankton	28 min
Aug 7, 11:18 PM CDT	Severe Thunderstorm Warning	FSD	Union	27 min
Aug 7, 11:28 PM CDT	Severe Thunderstorm Warning	FSD	Clay	32 min
Aug 7, 11:47 PM CDT	Severe Thunderstorm Warning	FSD	Union	28 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2000 Every severe thunderstorm warning in 2000

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.