Alert archive / South Dakota / Tornado Warnings in 2000

Tornado Warning 23, NWS Sioux Falls, SD

July 11, 2000Lincoln County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jul 11, 2000, 7:30 PM CDT for Lincoln County, South Dakota. It was in force for 30 min. 2 reports 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: Jul 11, 2000, 7:30 PM CDT (00:30 UTC)
Expired: Jul 11, 2000, 8:00 PM CDT
In force: 30 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Lincoln County, SD

The radar

The Sioux Falls radar (KFSD), 34 km from the middle of the area, began a volume at 00:32 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
Jul 11, 7:40 PM CDT	Thunderstorm Wind 52 E	Lennox, SD	Thunderstorm winds caused tree damage, including numerous branches down.
Jul 11, 8:00 PM CDT	Hail 1	Lennox, 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 11, 7:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.5 hours before the alert went out and 220 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: 3053 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1183 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFSD 120031
TORFSD

SDC083-120100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
730 PM CDT TUE JUL 11 2000

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 800 PM CDT

* AT 730 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  A TORNADO 17 MILES NORTHWEST OF HARRISBURG NEAR WALL LAKE...OR
  ABOUT 11 MILES   NORTHEAST OF PARKER...MOVING SOUTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  TEA AROUND 750 PM CDT
  HARRISBURG AROUND 800 PM CDT

DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY
TOSSED AROUND BY TORNA&DO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A
TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO STRUCTURE
IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 7:01 PM CDT	Severe Thunderstorm Warning	FSD	Douglas, Hutchinson	29 min
Jul 11, 7:11 PM CDT	Tornado Warning	FSD	Minnehaha	34 min
Jul 11, 7:20 PM CDT	Severe Thunderstorm Warning	FSD	Turner	25 min
Jul 11, 7:21 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme	24 min
Jul 11, 7:30 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	30 min
Jul 11, 7:43 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	32 min
Jul 11, 7:44 PM CDT	Tornado Warning	FSD	Lincoln, Turner	31 min
Jul 11, 8:06 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	54 min
Jul 11, 8:18 PM CDT	Severe Thunderstorm Warning	FSD	Union	27 min
Jul 11, 8:57 PM CDT	Severe Thunderstorm Warning	FSD	Union	33 min

Nearby

Tornado Warnings in South Dakota, 2000 Every tornado warning in 2000 Tornadoes 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.