Alert archive / South Dakota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 44, NWS Sioux Falls, SD

June 12, 1994Lincoln County, Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 12, 1994, 7:12 PM CDT for Lincoln County, Minnehaha County, South Dakota. It was in force for 21 min.

The area

The counties it named.

The facts

Issued
Jun 12, 1994, 7:12 PM CDT (00:12 UTC)
Expired
Jun 12, 1994, 7:33 PM CDT
In force
21 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Lincoln County, SD, Minnehaha County, SD

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.2 hours before the alert went out and 242 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, Omaha, NE at 00:00Z on 1994-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4262 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 1994-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 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
4262 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1255 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
514 m²/s²
Significant tornado parameter
4.3
Supercell composite
35.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Jun 12, 5:40 PM CDT, 1 hour 32 minutes before
SDZ022-023-038-039-053-054-122335-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
540 PM CDT SUN JUN 12 1994

...TORNADO WATCH FOR MUCH OF CENTRAL AND EASTERN SOUTH DAKOTA UNTIL
1000 PM CDT...

AT 530 PM CDT...ISOLATED SEVERE THUNDERSTORMS CONTINUED OVER A SMALL
PART OF EAST CENTRAL SOUTH DAKOTA.

THESE STORMS WERE LOCATED 15 MILES SOUTHEAST OF HURON AND 20 MILES SOUTH
OF WATERTOWN AND HAVE PRODUCE LARGE HAIL AND STRONG DAMAGING WINDS.
PERSONS IN SOUTHEAST BEADLE...NORTHERN SANBORN...SOUTHEAST HAMLIN
AND SOUTHERN DEUEL COUNTIES SHOULD REMAIN ALERT FOR THREATENING WEATHER
AND SEEK SHELTER IMMEDIATELY IF SIGHTED.

MOVEMENT WAS EAST AT 30 MILES AN HOUR.

PFEIFFER
Special weather statement, Jun 12, 5:43 PM CDT, 1 hour 29 minutes before
SDZ022-023-038-039-053-054-122335-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
540 PM CDT SUN JUN 12 1994

...TORNADO WATCH FOR MUCH OF CENTRAL AND EASTERN SOUTH DAKOTA UNTIL
1000 PM CDT...

AT 530 PM CDT...ISOLATED SEVERE THUNDERSTORMS CONTINUED OVER A SMALL
PART OF EAST CENTRAL SOUTH DAKOTA.

THESE STORMS WERE LOCATED 15 MILES SOUTHEAST OF HURON AND 20 MILES SOUTH
OF WATERTOWN AND HAVE PRODUCE LARGE HAIL AND STRONG DAMAGING WINDS.
PERSONS IN SOUTHEAST BEADLE...NORTHERN SANBORN...SOUTHEAST HAMLIN
AND SOUTHERN DEUEL COUNTIES SHOULD REMAIN ALERT FOR THREATENING WEATHER
AND SEEK SHELTER IMMEDIATELY IF SIGHTED.

MOVEMENT WAS EAST AT 30 MILES AN HOUR.

PFEIFFER
Special weather statement, Jun 12, 6:14 PM CDT, 58 minutes before
IAZ021-032-043-013-020-031-NEZ014-013-015-SDZ071-130015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
614 PM CDT SUN JUN 12 1994

...STRONG THUNDERSTORMS WILL MOVE INTO THE AREA...

STRONG THUNDERSTORMS WILL MOVE INTO DIXON COUNTY NEBRASKA BETWEEN 630
AND 7 PM. THESE STORMS HAVE HAD A HISTORY OF PRODUCING HAIL. DIXON
COUNTY IS ABOUT 25 MILES WEST OF SIOUX CITY. OTHERS STORMS WERE
DEVELOPING NORTHWEST OF SIOUX CITY NEAR NORA SOUTH DAKOTA OR 35 MILES
NORTHWEST OF SIOUX CITY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 10 PM FOR ALL BUT THURSTON
COUNTY NEBRASKA. THURSTON COUNTY IS ALSO IN A TORNADO WATCH UNTIL
MIDNIGHT.

MICHELS
Special weather statement, Jun 12, 6:15 PM CDT, 57 minutes before
IAZ021-032-043-013-020-031-NEZ014-013-015-SDZ071-130015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
614 PM CDT SUN JUN 12 1994

...STRONG THUNDERSTORMS WILL MOVE INTO THE AREA...

STRONG THUNDERSTORMS WILL MOVE INTO DIXON COUNTY NEBRASKA BETWEEN 630
AND 7 PM. THESE STORMS HAVE HAD A HISTORY OF PRODUCING HAIL. DIXON
COUNTY IS ABOUT 25 MILES WEST OF SIOUX CITY. OTHERS STORMS WERE
DEVELOPING NORTHWEST OF SIOUX CITY NEAR NORA PSOUTH DAKOTA OR 35 MILES
NORTHWEST OF SIOUX CITY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 10 PM FOR ALL BUT THURSTON
COUNTY NEBRASKA. THURSTON COUNTY IS ALSO IN A TORNADO WATCH UNTIL
MIDNIGHT.

MICHELS
Special weather statement, Jun 12, 7:00 PM CDT, 12 minutes before
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Special weather statement, Jun 12, 7:01 PM CDT, 11 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 8:01 PM CDTSevere Thunderstorm WarningFSDLyon, Osceola29 min
Jun 12, 8:18 PM CDTSevere Thunderstorm WarningFSDO'Brien27 min
Jun 12, 8:23 PM CDTSevere Thunderstorm WarningFSDSioux52 min
Jun 12, 8:23 PM CDTSevere Thunderstorm WarningFSDPlymouth37 min
Jun 12, 8:46 PM CDTSevere Thunderstorm WarningFSDO'Brien29 min
Jun 12, 9:01 PM CDTSevere Thunderstorm WarningFSDPlymouth29 min
Jun 12, 9:05 PM CDTSevere Thunderstorm WarningFSDWoodbury40 min
Jun 12, 9:13 PM CDTSevere Thunderstorm WarningFSDCherokee46 min
Jun 12, 9:46 PM CDTSevere Thunderstorm WarningFSDWoodbury29 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1994Every severe thunderstorm warning in 1994

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.