Alert archive / South Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 185, NWS Sioux Falls, SD

August 5, 2000Sanborn County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 5, 2000, 11:25 PM CDT for Sanborn County, South Dakota. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 5, 2000, 11:25 PM CDT (04:25 UTC)
Expired: Aug 6, 2000, 12:10 AM CDT
In force: 45 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Sanborn County, SD

The radar

The Sioux Falls radar (KFSD), 120 km from the middle of the area, began a volume at 04:28 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.

What was reported inside it

Time	Report	Where	Remark
Aug 5, 11:36 PM CDT	Hail 0.75	Woonsocket, SD

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 4.4 hours before the alert went out and 101 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: 1907 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1173 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

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

382 
WUUS53 KFSD 060425
SVRFSD
SDC111-060510-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1125 PM CDT SAT AUG 5 2000

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SANBORN COUNTY IN EAST CENTRAL SOUTH DAKOTA

* UNTIL 1210 AM CDT

* AT 1125 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES NORTHWEST OF WOONSOCKET...OR ABOUT 18
  MILES SOUTHWEST OF HURON...MOVING SOUTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WOONSOCKET AROUND 1135 PM CDT
  FORESTBURG AROUND 1145 PM CDT
  LETCHER AROUND 1155 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 5, 8:30 PM CDT, 2 hours 55 minutes earlier.

Area forecast discussion, Aug 5, 8:30 PM CDT, 2 hours 55 minutes before

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
830 PM CDT SAT AUG 5 2000

COLD FRONT CONTINUES TO MOVE EAST OUT OF THE AREA BUT NOT BEFORE
TRIGGERING A FEW WARNINGS FOR WOODBURY COUNTY.  OTHER SHOWERS IN CWA
HAVE DISSIPATED WITH THE SETTING OF THE SUN.  BIG QUESTION IS
WHETHER OR NOT WE WILL SEE PRECIP DEVELOPMENT AS NEXT SHORT WAVE
PASSES THROUGH.  MESOETA SHOWS MOST OF THE LIFT SHOULD OCCUR BEFORE
MIDNIGHT...BUT IT ALSO KEEPS MOST OF THE DYNAMICS TO THE NORTH OF
OUR CWA.  AT THIS POINT I FEEL ILL KEEP MENTION OF A CHANCE OF TSRA
ACROSS NORTHERN COUNTIES BUT NOTHING AS FAR SOUTH AS KFSD.  THE ONLY
FLY IN THE OINTMENT WITH THIS THINKING WOULD BE ANY OUTFLOW
BOUNDARIES THAT DEVELOP FROM NORTHERN CONVECTION.  WILL UPDATE ALL
ZONES TO TAKE OUT MENTION OF EVENING.

.FSD...NONE.
HEITKAMP

In the hours before

Local storm report, Aug 5, 6:04 PM CDT, 5 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
604 PM CDT SAT AUG 05 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1236 AM    WESSINGTON                SD   .75 INCH HAIL
08/05/00   BEADLE

0110 AM    ALPENA                    SD   .75 INCH HAIL
08/05/00   JERAULD                        TREES...BRANCHES AND
                                          POWER LINES DOWN

0153 AM    (MHE)MITCHELL ARPT        SD   52 MPH TSTM GUST
08/05/00   DAVISON

0200 AM    2 W MITCHELL              SD   TORNADO
08/05/00   DAVISON                        DETERMINED FROM NWS
                                          DAMAGE SURVEY.   DAMAGE
                                          TO SEVERAL STRUCTURES.

0204 AM    MITCHELL                  SD   WIND DAMAGE
08/05/00   DAVISON                        *** 10 INJ ***
                                          APARTMENTS AND TWO
                                          MOBILE HOMES DESTROYED.
                                          PICKUP AND TRAILER
                                          BLOWN OVER.  NUMEROUS
                                          OTHER BUILDINGS
                                          SUSTAINED DAMAGE.
                                          DAMAGE SURVEY CONDUCTED
                                          BY NWS. REPORTED BY
                   k                       EMERGENCY MANAGEMENT.

0204 AM    MITCHELL                  SD   .88 INCH HAIL
08/05/00   DAVISON                        REPORTED BY EMERGENCY
                                          MANAGEMENT.

Local storm report, Aug 5, 6:15 PM CDT, 5 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
615 PM CDT SAT AUG 05 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0535 PM    6 NW ANTHON               IA   .75 INCH HAIL
08/05/00   WOODBURY                       REPORTED BY STORM
                                          SPOTTER.

0549 PM    1 N ANTHON                IA   1 INCH HAIL
08/05/00   WOOD=BURY

0555 PM    2 SW ANTHON               IA   .88 INCH HAIL
08/05/00   WOODBURY                       DIME TO NICKEL SIZE
                                          HAIL WAS REPORTED.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 10:49 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld	41 min
Aug 5, 11:44 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Miner	46 min
Aug 5, 11:55 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Jerauld	35 min
Aug 6, 12:28 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison	32 min
Aug 6, 12:29 AM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner	41 min
Aug 6, 12:59 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison	31 min
Aug 6, 1:11 AM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	34 min
Aug 6, 1:18 AM CDT	Severe Thunderstorm Warning	FSD	McCook, Turner	27 min
Aug 6, 1:27 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson	48 min
Aug 6, 1:46 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	44 min
Aug 6, 2:30 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	45 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.