Alert archive / South Dakota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 2, NWS Aberdeen, SD

April 25, 1994Clark County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Apr 25, 1994, 8:45 PM CDT for Clark County, South Dakota. It was in force for 20 min.

The area

The counties it named.

The facts

Issued
Apr 25, 1994, 8:45 PM CDT (01:45 UTC)
Expired
Apr 25, 1994, 9:05 PM CDT
In force
20 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Clark County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 1.8 hours before the alert went out and 53 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 00:00Z on 1994-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 1994-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 273 square meters per square second.1939587897Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
604 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
273 m²/s²
0-3 km storm-relative helicity
437 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHON 260145
SVRHON
SDC025-260215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE HURON SD 
845 PM CDT MON APR 25 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE EAST CENTRAL PART OF SOUTH DAKOTA
      NORTHERN CLARK

SOME OF THE COMMUNITIES INCLUDED IN THIS WARNING ARE GARDEN CITY...
BRADLEY...AND CROCKER.

 AT 835 PM CDT...DIME SIZED HAIL WAS REPORTED BY A SPOTTER NEAR
ELROD. THE STORM IS MOVING NORTH AT 45 MILES AN HOUR AND IS
EXPECTED TO MOVE OUT OF CLARK COUNTY BY 915 PM CDT.

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 LYING AREA.

 SPRINGER

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, Apr 25, 5:12 PM CDT, 3 hours 33 minutes before
SDZ003-004-009-015-016-260200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
510 PM CDT MON APR 25 1994

...WINTER WEATHER RETURNS TO NORTHCENTRAL SOUTH DAKOTA...

A WINTER STORM WATCH IS IN EFFECT FOR THE COUNTIES ON EITHER SIDE OF
THE MISSOURI RIVER IN NORTHCENTRAL SOUTH DAKOTA ON TUESDAY. THE COUNTIES
INCLUDE CORSON...CAMPBELL...DEWEY...WALWORTH AND POTTER. SOME COMMUNITIES
INCLUDED IN THIS WATCH ARE MOBRIDGE...MCINTOSH...TIMBER LAKE...GETTYSBURG
SELBY AND MOUND CITY.

A STRONG LOW PRESSURE SYSTEM IN THE CENTRAL PLAINS WILL MOVE NORTHEAST
TONIGHT AND TUESDAY.  RAIN IS EXPECTED TO BECOME MIXED WITH SNOW TONIGHT
AND CHANCE TO SNOW TONIGHT AND TUESDAY. TOTAL ACCUMULATIONS OF 6 INCHES OR
MORE ARE POSSIBLE. STRONG NORTHERLY WINDS ARE EXPECTED AT 25 TO 40 MPH WHICH
MAY CAUSE NEAR BLIZZARD CONDITIONS ALONG WITH WIND CHILL READINGS IN THE
SINGLE DIGITS.
>
RESIDENTS AND THOSE PLANNING TRAVEL IN THESE AREAS SHOULD BE READzY FOR
THE ADVERSE WINTER WEATHER. LIVESTOCK OWNERS MAY NEED TO TAKE EXTRA STEPS
TO PROTECT YOUNG LIVESTOCK AS THESE CONDITIONS WILL BE STRESSFUL. STAY
TUNED TO YOUR LOCAL RADIO AND TV FOR LATER STATEMENTS.

NIELSEN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 7:46 PM CDTSevere Thunderstorm WarningABRMiner, Sanborn29 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.