Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 2, NWS Aberdeen, SD

May 18, 1990Potter County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at May 18, 1990, 3:30 PM CDT for Potter County, South Dakota. It was in force for 60 min.

The area

The counties it named.

The facts

Issued: May 18, 1990, 3:30 PM CDT (20:30 UTC)
Expired: May 18, 1990, 4:30 PM CDT
In force: 60 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

County Potter County, SD

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 8.5 hours before the alert went out and 124 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1629 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KABR 182030
SVRABR
SDC107-182130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ABERDEEN SD
330 PM CDT FRI MAY 18 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 430 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE NORTH CENTRAL PART OF SOUTH DAKOTA
      EASTERN POTTER

SOME OF THE CITIES INCLUDED IN THIS WARNING ARE TOLSTOY AND
LEBANON.

AT 325 PM CDT  RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES
NORTH OF GETTYSBURG SD OR 50 MILES SOUTHEAST OF MOBRIDGE SD
MOVING EAST AT 25 MPH.

 AT 320 PM CDT POTTER COUNTY SHERIFF DEPARTMENT REPORTED
WIND OF 55 TO 60 MPH FROM THIS THUNDERSTORM.

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

THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR
NO ADVANCE WARNING SO BE ON THE LOOKOUT.

STUDNICKA

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, May 18, 2:38 PM CDT, 52 minutes before

SDZ003-182100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
235 PM CDT FRI MAY 18 1990

AT 230 PM CDT RADAR INDICATES AN INTENSE THUNDERSTORM WITH VERY
HEAVY RAIN AND STRONG GUSTY WIND OF 30 TO 40 MPH MOVING ONTO THE
MISSOURI RIVER WEST OF GETTYSBURG SD OR 40 MILES SOUTH OF MOBRIDGE
SD MOVING EAST AT 25 MPH.

REPORTS FROM THE POTTER COUNTY SHERIFF DEPARTMENT INDICATES BRIEF
HEAVY RAIN WITH STRONG WIND IN ADVANCE OF THIS THUNDERS9TORM AS
REPORTED BY THE PARK RANGER ALONG THE MISSOURI RIVER NEAR US HIWAY
212.

PERSONS WITHIN THE PATH OF THIS THUNDERSTORM ACTIVITY SHOULD BE
PREPARED TO TAKE COVER AS NEEDED.
 STUDNICKA

Special weather statement, May 18, 3:15 PM CDT, 15 minutes before

SDZ003-SDZ004-182300

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
315 PM CDT FRI MAY 18 1990

AT 310 PM CDT RADAR INDICATES AN AREA OF SHOWERS AND THUNDERSTORMS
EXTENDING FROM GREENWAY SD OR 45 MILES NORTHEAST OF MOBRIDGE SD ON
SOUTH TO 5 MILES SOUTH OF GETTYSBURG SD OR 50 MILES SOUTHEAST OF
MOBRIDGE SD MOVING EAST AT 25 MPH. THE MOST INTENSE THUNDERSTORM IS
PRESENTLY LOCATED 5 MILES NORTH OF GETTYSBURG.

RECENT REPORTS FROM ALONG THIS LINE OF THUNDERSTORM ACTIVITY HAS HAD
PEA SIZE HAIL FALL AT OR NEAR AKASKA SD...SELBY SD AND ALONG THE RIVER
WEST OF GETTYSBURG ALL IN THE LAST 30 MINUTES.

PERSONS WITHIN THE PATH OF THIS LINE OF THUNDERSTOMS IN MOST OF OR
ALL OF THE FOLLbOWING COUNTIES IN NORTH CENTRAL SD SHOULD BE PREPARED         [
FOR ADVERSE WEATHER BETWEEN 4 AND 6 PM CDT. THOSE COUNTIES ARE...FAULK
EDMUNDS AND MCPHERSON.
 STUDNICKA

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 5:25 PM CDT	Severe Thunderstorm Warning	ABR	Miner	35 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1990 Every severe thunderstorm warning in 1990

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.