Alert archive / South Dakota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 103, NWS Sioux Falls, SD

June 24, 1998Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 24, 1998, 9:35 PM CDT for Minnehaha County, South Dakota. It was in force for 35 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: Jun 24, 1998, 9:35 PM CDT (02:35 UTC)
Expired: Jun 24, 1998, 10:10 PM CDT
In force: 35 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Minnehaha County, SD

What was reported inside it

Time	Report	Where	Remark
Jun 24, 9:43 PM CDT	Thunderstorm Wind 61	Hartford, 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
Jun 24, 6:30 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.6 hours before the alert went out and 187 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: 6538 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 857 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 250235 RRA
SVRFSD
SDC099-250310-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
935 PM CDT WED JUN 24 1998

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MINNEHAHA COUNTY IN SOUTHEASTERN SOUTH DAKOTA

* UNTIL 1010 PM CDT

* AT 933 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  DAMAGING WINDS 10 MILES NORTHWEST OF SIOUX FALLS  OR 3 MILES
  SOUTHWEST OF CROOKS MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LYONS                    AROUND 935 PM CDT
  CROOKS                   AROUND 936 PM CDT
  RENNER                   AROUND 940 PM CDT
  BALTIC                   AROUND 945 PM CDT
  DELL RAPIDS              AROUND 950 PM CDT
  GARRETSON                AROUND 955 PM CDT

A TORNADO WATCH IS ALSO IN EFFECT.  SEVERE THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE TORNADOES.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.
 HAMEN

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 Jun 24, 9:05 PM CDT, 30 minutes earlier.

Area forecast discussion, Jun 24, 9:05 PM CDT, 30 minutes before

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
905 PM CDT WED JUN 24 1998

DUE TO SVR WX IN THE CWA ATTM...WL NOT BE WORRYING ABOUT UPDTG ZFP. TOR
AND SVR WATCHES STILL IN EFFECT. WL BE UPDATING LATER TO CLEAR THE
WATCHES AS CONDITIONS WARRANT.

.FSD...NONE
GILLISPIE

In the hours before

Local storm report, Jun 24, 8:41 PM CDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SOUTH DAKOTA
841 PM CDT WED JUN 24 1998

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

0813 PM    WHITE LAKE                SD   1 INCH HAIL
06/24/98   AURORA

0820 PM    WHITE LAKE                SD   1 INCH HAIL
06/24/98   AURORA

0825 PM    5 SE DELMONT              SD   60 MPH TSTM GUST
06/24/98   HUTCHINSON                     OCCURRED IN SOUTHWEST PART
                                          OF COUNTY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 7:02 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	48 min
Jun 24, 7:50 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	35 min
Jun 24, 8:16 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Jerauld	34 min
Jun 24, 8:17 PM CDT	Tornado Warning	FSD	Bon Homme	33 min
Jun 24, 8:20 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson	35 min
Jun 24, 8:47 PM CDT	Severe Thunderstorm Warning	FSD	McCook	33 min
Jun 24, 8:54 PM CDT	Severe Thunderstorm Warning	FSD	Sanborn	31 min
Jun 24, 9:16 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	34 min
Jun 24, 9:30 PM CDT	Severe Thunderstorm Warning	FSD	Kingsbury	45 min
Jun 24, 9:38 PM CDT	Severe Thunderstorm Warning	FSD	Moody	32 min
Jun 24, 9:44 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	31 min
Jun 24, 9:50 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	35 min
Jun 24, 10:15 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	45 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1998 Every severe thunderstorm warning in 1998

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.