Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 114, NWS Sioux Falls, SD

June 24, 1998Nobles County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 24, 1998, 11:40 PM CDT for Nobles County, Minnesota. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 24, 1998, 11:40 PM CDT (04:40 UTC)
Expired: Jun 25, 1998, 12:15 AM CDT
In force: 35 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Nobles County, MN

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

Minneapolis, MN (KMPX), launched 00:00Z, 4.7 hours before the alert went out and 216 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: 3921 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1033 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 250440 RRA
SVRFSD
MNC105-250515-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1140 PM CDT WED JUN 24 1998

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN NOBLES COUNTY IN SOUTHWESTERN MINNESOTA

* UNTIL 1215 AM CDT

* AT 1138 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A SEVERE THUNDERSTORM 7 MILES SOUTHWEST OF WORTHINGTON
  OR 5 MILES SOUTHWEST OF WORTHINGTON MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WORTHINGTON              AROUND 1145 PM CDT
  BREWSTER                 AROUND 1150 PM CDT

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

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WINDS AND LARGE HAIL OCCUR WITH SEVERE
THUNDERSTORMS.  STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM> HAS
PASSED.
 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, 2 hours 35 minutes earlier.

Area forecast discussion, Jun 24, 9:05 PM CDT, 2 hours 35 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, 2 hours 59 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, 9:38 PM CDT	Severe Thunderstorm Warning	FSD	Pipestone	32 min
Jun 24, 9:41 PM CDT	Severe Thunderstorm Warning	FSD	Rock	34 min
Jun 24, 9:44 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	31 min
Jun 24, 10:04 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Murray	46 min
Jun 24, 10:15 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Pipestone	45 min
Jun 24, 10:28 PM CDT	Severe Thunderstorm Warning	FSD	Nobles	47 min
Jun 24, 11:26 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood	34 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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; the sounding from the Mesonet's radiosonde archive.