Alert archive / South Dakota / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 56

February 25, 200014 counties in Minnesota; 28 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Feb 25, 2000, 5:15 PM CST for 14 counties in Minnesota; 28 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Feb 25, 2000, 5:15 PM CST (23:15 UTC)
Expired: Feb 25, 2000, 10:00 PM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 42 counties

Chippewa County, MN, Cottonwood County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Yellow Medicine County, MN, Aurora County, SD, Beadle County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Deuel County, SD, Douglas County, SD, Grant County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lyman County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Spink County, SD, Sully County, SD, Tripp County, SD

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Feb 25, 5:42 PM CST	Severe Thunderstorm Warning	ABR	Lyman	33 min
Feb 25, 5:50 PM CST	Severe Thunderstorm Warning	ABR	Hand	50 min

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.3 hours before the alert went out and 62 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: 469 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 285 m²/s²
0-3 km storm-relative helicity: 293 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 252248
MKC WW 252248
MNZ000-SDZ000-260400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 56
STORM PREDICTION CENTER NORMAN OK
448 PM CST FRI FEB 25 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   SOUTHWEST MINNESOTA                          
   EASTERN SOUTH DAKOTA                       

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 515 PM UNTIL 1000
PM CST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 60 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 50 MILES WEST NORTHWEST OF
CHAMBERLAIN SOUTH DAKOTA TO 15 MILES EAST SOUTHEAST OF REDWOOD
FALLS MINNESOTA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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 54...WW 55...

DISCUSSION...AS DRY LINE MOVES NWD INTO SERN SD AHEAD OF STRONG
SURFACE LOW NEB...STORMS ARE DEVELOPING OVER ERN SD.  AIRMASS
SUFFICIENTLY UNSTABLE GIVEN FAVORABLE SHEAR PROFILES FOR SOME
ROTATING STORMS WITH PRIMARY THREAT LARGE HAIL.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.  MEAN STORM
MOTION VECTOR 18035.


...HALES

;445,1001 451,0944 433,0944 431,1001;

Nearby

Severe Thunderstorm Watches in South Dakota, 2000 Severe Thunderstorm Watches in Minnesota, 2000 Every severe thunderstorm 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.