Alert archive / South Dakota / Tornado Warnings in 1992

Tornado Warning 24, NWS Sioux Falls, SD

June 28, 1992Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 28, 1992, 6:36 PM CDT for Minnehaha County, South Dakota. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
Jun 28, 1992, 6:36 PM CDT (23:36 UTC)
Expired
Jun 28, 1992, 7:15 PM CDT
In force
39 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Minnehaha County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 11.6 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-pSkew-T log-p diagram, Aberdeen, SD at 12:00Z on 1992-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 235 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 1992-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
235 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
774 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 282339 COR
TORFSD
SDC099-290015-

BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTED TO READ WESTERN MINNEHAHA COUNTY
NATIONAL WEATHER SERVICE SIOUX FALLS SD
636 PM CDT SUN JUN 28 1992

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  715 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...

IN SOUTHEAST SOUTH DAKOTA

   ...WESTERN MINNEHAHA COUNTY

A TORNADO WAS ON THE GROUND 5 MILES NORTHEAST OF HUMBOLT. THE TORNADO
WAS DRIFTING SLOWLY SOUTH. HUMBOLT AND HARTFORD ARE THE TOWNS
MOST THREATENED BY THIS
TORNADO.

IF YOU LIVE IN A HOME OR APARTMENT...SEEK SHELTER IN THE
INNERMOST PORTION OF THE BUILDING ON THE LOWEST FLOOR.  IF YOU LIVE
IN A MOBILE HOME9...ABANDON IT FOR A STRONGER SHELTER.

KRIEHN

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 28, 4:31 PM CDT, 2 hours 5 minutes before
SDZ018-MNZ017-282215-

SPECIAL WEATHER STATEMENT AND SHORT RANGE FORECAST
NATIONAL WEATHER SERVICE SIOUX FALLS SD
430 PM CDT SUN JUN 28 1992

...THUNDERSTORMS ARE MOVING SOUTH INTO PIPESTONE AND MURRAY
   COUNTIES IN SOUTHWEST MINNESOTA...

AT 420 PM A SHORT LINE OF THUNDERSTORMS WAS MOVING SOUTH INTO NORTHERN
PIPESTONE AND NORTHERN MURRAY COUNTIES IN SOUTHWEST MINNESOTA. THE
STRONGEST THUNDERSTORM WAS LOCATED NEAR BALATON. THE THUNDERSTORMS
WERE MOVING SOUTH AT 10 MPH.

HEAVY RAIN...BRIEF GUSTY WINDS...AND SMALL HAIL ARE LIKELY WITH THESE
STORMS. PEOPLE IN THE NORTHERN PORTIONS OF PIPESTONE AND MURRAY
COUNTIES CAN EXPECT THESE THUNDERSTORMS TO MOVE THROUGH BEFORE 500 PM.
IF THE STORMS DO NOT DISSIPATE...THEY WILL MOVE INTO THE PIPESTONE
AND SLAYTON AREA BETWEEN 500 AND 515 PM THIS EVENING.

KRIEHN
Special weather statement, Jun 28, 5:26 PM CDT, 1 hour 10 minutes before
SDZ018-MNZ017-282325-

SPECIAL WEATHER STATEMENT AND SHORT RANGE FORECAST
NATIONAL WEATHER SERVICE SIOUX FALLS SD
525 PM CDT SUN JUN 28 1992

...THUNDERSTORMS CONTINUE IN SOUTHWEST MINNESOTA...

AT 520 PM A SHORT LINE OF THUNDERSTORMS WAS NEARLY STATIONARY ACROSS
NORTHERN PIPESTONE AND NORTHERN MURRAY COUNTIES ON MINNESOTA. THE LINE
EXTENDED FROM RUTHTON TO TRACY IN SOUTHERN LYON COUNTY. THE LINE HAD
MOVED SOUTH ABOUT 5 MILES OVER THE PAST HOUR.

SINCE THE THUNDERSTORMS ARE MOVING SO SLOWLY...HEAVY RAIN IS A CONCERN.
PEOPLE IN THE NORTHERN PORTIONS OF PIPESTONE AND MURRAY COUNTIES SHOULD
BE ON THE LOOKOUT FOR HEAVY RAIN. DANGEROUS LIGHTNING IS ALSO OCCURRING
WITH THESE THUNDERSTORMS.

THE LINE OF THUNDERSTORMS WILL CONTINUE TO DRIFT SLOWLY SOUTH OVER THE
NEXT HOUR.
KRIEHN

Nearby

Tornado Warnings in South Dakota, 1992Every tornado warning in 1992Tornadoes in 1992

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.