Alert archive / South Dakota / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 13, NWS Aberdeen, SD

June 12, 1993Sully County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 12, 1993, 6:20 PM CDT for Sully County, South Dakota. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Jun 12, 1993, 6:20 PM CDT (23:20 UTC)
Expired
Jun 12, 1993, 6:45 PM CDT
In force
25 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Sully County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 11.3 hours before the alert went out and 138 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 1993-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 650 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, Aberdeen, SD at 12:00Z on 1993-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 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
650 J/kg
Mixed-layer CIN
-180 J/kg
Mixed-layer LCL
1125 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
173 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHON 122320 RRA
SVRHON
SDC119-122345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE HURON SD 
620 PM CDT SAT JUN 12 1993

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 645 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE CENTRAL PART OF SOUTH DAKOTA
      SULLY

THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER.

SOME OF THE COMMUNITIES INCLUDED IN THIS WARNING ARE ONIDA AND
AGAR

AT 615 PM CDT  RADAR INDICATED A SEVERE THUNDERSTORM
HAD DEVELOPED OVER EXTREME EASTERN STANLEY COUNTY. THE THUNDERSTORM
WILL BE MOVING IN SUNNLY COUNTY SHORTLY. THE THUNDERSTORM WAS
MOVING NORTHEAST AT 30 MILES AN HOUR.

IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A REINFORCED
SHELTER.  A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 55 MPH...3/4 INCH HAIL OR LARGER...DEADLY LIGHTNING AND VERY
HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYdING AREA.

 MILLER

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, 3:40 PM CDT, 2 hours 40 minutes before
SDZ003-122100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
340 PM CDT SAT JUN 12 1993

...THUNDERSTORMS DEVELOPING ALONG THE MISSOURI RIVER...

THUNDERSTORMS HAVE STARTED TO DEVELOPE ALONG AND WEST OF THE MISSOURI
RIVER ACCORDING TO CURRENT RADAR INFORMATION. THESE STORMS...SOME HAVING
HEAVY RAIN AND SMALL HAIL...ARE EXPECTED TO MOVE TO THE NORTHEAST. THESE
STORMS WILL BE A PROBLEM FOR BOATERS ON THE OAHE FROM 35 NORTH OF PIERRE
TO THE NORTH DAKOTA STATE LINE NORTH OF POLLOCK.

REMEMBER...SOME OF THESE STORMS COULD DEVELOPE RAPIDLY INTO A SEVERE
WEATHER SITUATION...SO PLEASE KEEP AN EYE TO THE SKY AND STAY TUNED TO
YOUR LOCAL RADIO OR T.V. FOR ADDITIONAL INFORMATION

STUDNICKA
Special weather statement, Jun 12, 3:43 PM CDT, 2 hours 37 minutes before
SDZ003-122100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
340 PM CDT SAT JUN 12 1993

...THUNDERSTORMS DEVELOPING ALONG THE MISSOURI RIVER...

THUNDERSTORMS HAVE STARTED TO DEVELOPE ALONG AND WEST OF THE MISSOURI
RIVER ACCORDING TO CURRENT RADAR INFORMATION. THESE STORMS...SOME HAVING
HEAVY RAIN AND SMALL HAIL...ARE EXPECTED TO MOVE TO THE NORTHEAST. THESE
STORMS WILL BE A PROBLEM FOR BOATERS ON THE OAHE FROM 35 NORTH OF PIERRE
TO THE NORTH DAKOTA STATE LINE NORTH OF POLLOCK.

REMEMBER...SOME OF THESE STORMS COULD DEVELOPE RAPIDLY INTO A SEVERE
WEATHER SITUATION...SO PLEASE KEEP AN EYE TO THE SKY AND STAY TUNED TO
YOUR LOCAL RADIO OR T.V. FOR ADDITIONAL INFORMATION

STUDNICKA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 7:12 PM CDTSevere Thunderstorm WarningABRHughes, Sully63 min
Jun 11, 8:41 PM CDTTornado WarningABRLyman14 min
Jun 11, 9:11 PM CDTSevere Thunderstorm WarningABRHughes49 min
Jun 11, 10:35 PM CDTSevere Thunderstorm WarningABRLyman40 min
Jun 12, 12:08 AM CDTSevere Thunderstorm WarningABRMiner112 min
Jun 12, 4:22 PM CDTSevere Thunderstorm WarningABRCampbell, Corson, Walworth68 min
Jun 12, 6:33 PM CDTSevere Thunderstorm WarningABRCampbell57 min
Jun 12, 6:49 PM CDTSevere Thunderstorm WarningABRPotter56 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1993Every severe thunderstorm warning in 1993

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.