Alert archive / South Dakota / Tornado Watches in 2000

Tornado Watch 616

July 24, 2000Big Stone County, Traverse County, Minnesota; 12 counties in Nebraska; 33 counties in South Dakota

The Storm Prediction Center issued this tornado watch at Jul 24, 2000, 5:30 PM CDT for Big Stone County, Traverse County, Minnesota; 12 counties in Nebraska; 33 counties in South Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jul 24, 2000, 5:30 PM CDT (22:30 UTC)
Expired: Jul 24, 2000, 11:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 47 counties

Big Stone County, MN, Traverse County, MN, Antelope County, NE, Blaine County, NE, Boyd County, NE, Brown County, NE, Garfield County, NE, Holt County, NE, Keya Paha County, NE, Knox County, NE, Loup County, NE, Rock County, NE, Thomas County, NE, Wheeler County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lyman County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Miner County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Tripp County, SD

The radar

The Sioux Falls radar (KFSD), 195 km from the middle of the area, began a volume at 22:32 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.

Warnings issued inside it

22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jul 24, 5:45 PM CDT	Tornado Warning	UNR	Todd, Tripp	45 min
Jul 24, 6:25 PM CDT	Tornado Warning	UNR	Tripp	50 min
Jul 24, 6:36 PM CDT	Tornado Warning	LBF	Keya Paha	54 min
Jul 24, 6:36 PM CDT	Severe Thunderstorm Warning	ABR	Brown	24 min
Jul 24, 6:41 PM CDT	Severe Thunderstorm Warning	ABR	Spink	49 min
Jul 24, 6:45 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	60 min
Jul 24, 7:10 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	65 min
Jul 24, 7:26 PM CDT	Tornado Warning	LBF	Brown, Keya Paha	64 min
Jul 24, 7:27 PM CDT	Severe Thunderstorm Warning	ABR	Spink	48 min
Jul 24, 7:34 PM CDT	Severe Thunderstorm Warning	ABR	Faulk	26 min
Jul 24, 7:50 PM CDT	Severe Thunderstorm Warning	ABR	Hand	40 min
Jul 24, 8:08 PM CDT	Tornado Warning	ABR	Hand	37 min
Jul 24, 8:14 PM CDT	Tornado Warning	LBF	Brown, Cherry	61 min
Jul 24, 8:14 PM CDT	Severe Thunderstorm Warning	ABR	Spink	46 min
Jul 24, 8:46 PM CDT	Severe Thunderstorm Warning	ABR	Hand	59 min
Jul 24, 8:58 PM CDT	Severe Thunderstorm Warning	ABR	Hyde	32 min
Jul 24, 9:05 PM CDT	Tornado Warning	LBF	Blaine	55 min
Jul 24, 9:14 PM CDT	Tornado Warning	LBF	Brown, Cherry	31 min
Jul 24, 9:34 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	56 min
Jul 24, 9:58 PM CDT	Tornado Warning	LBF	Blaine	62 min
Jul 24, 10:11 PM CDT	Severe Thunderstorm Warning	LBF	Garfield	49 min
Jul 24, 10:48 PM CDT	Severe Thunderstorm Warning	ABR	Hand	27 min

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.5 hours before the alert went out and 172 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: 959 J/kg
Mixed-layer CIN: -282 J/kg
Mixed-layer LCL: 1002 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

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

542 
WWUS9 KMKC 242156
SEL6  

SEL6  
MKC WW 242149
MNZ000-NEZ000-SDZ000-250400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 616
STORM PREDICTION CENTER NORMAN OK
449 PM CDT MON JUL 24 2000

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   WESTCENTRAL MINNESOTA                          
   NORTHERN NEBRASKA                           
   EASTERN SOUTH DAKOTA                       

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EAST AND WEST
OF A LINE FROM 25 MILES WEST OF BURWELL NEBRASKA TO 50 MILES
NORTHEAST OF ABERDEEN SOUTH DAKOTA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 615...

DISCUSSION...THUNDERSTORMS EXPECTED TO DEVELOP RAPIDLY VICINITY
FRONTAL ZONE  NCENTRAL SD SSWWD INTO N CNTRL NEB.  AIRMASS E OF
FRONT HAS BECOME MODERATELY TO STRONGLY UNSTABLE AND WEAKLY CAPPED. 
WITH STRONG DIRECTIONAL SHEAR PROFILES...A FEW TORNADIC SUPERCELLS
SHOULD FORM  ACROSS SD AND PROPAGATE S/SSEWD INTO NRN NEB.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. 
MEAN STORM MOTION VECTOR 33025.


...HALES

455,0960 414,0981 414,1010 455,0991

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 24, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	Becker, Beltrami, Clay, Clearwater, Hubbard, Kittson and 12 more	6 hr

Nearby

Tornado Watches in South Dakota, 2000 Tornado Watches in Nebraska, 2000 Tornado Watches in Minnesota, 2000 Every tornado watch 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.