Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 91, NWS Aberdeen, SD

July 18, 1990Spink County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 18, 1990, 2:12 PM CDT for Spink County, South Dakota. It was in force for 56 min.

The area

The counties it named.

The facts

Issued: Jul 18, 1990, 2:12 PM CDT (19:12 UTC)
Expired: Jul 18, 1990, 3:08 PM CDT
In force: 56 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

County Spink 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, 7.2 hours before the alert went out and 6 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: 2240 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KABR 181912
SVRABR
SDC115-182015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ABERDEEN SD
212 PM CDT WED JUL 18 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 315 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE NORTHEAST PART OF SOUTH DAKOTA
      SPINK

SOME OF THE CITIES INCLUDED IN THIS WARNING ARE REDFIELD...TULARE..
.MELLETTE.

AT 210 PM CDT  RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES WEST
OF TULARE OR 50 MILES SOUTH OF ABERDEEN MOVING EAST AT 30 MPH.

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 LMPH..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.

ADDISON

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, Jul 18, 1:50 PM CDT, 22 minutes before

SDZ004-181950-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
150 PM CDT WED JUL 18 1990

AT 145 PM CDT RADAR INDICATED A THUNDERSTORM IN NORTHERN FAULK COUNTY
SOUTHWEST OF ABERDEEN. MOVEMENT OF THE THUNDERSTORM WAS EAST AT 30 MPH.

THE FAULK COUNTY SHERIFF REPORTED PEA SIZED HAIL IN FAULKTON AT 130 PM.

THESE STORMS CAN BE EXPECTED TO PRODUCE HEAVY RAIN...STRONG WINDS...
SMALL HAIL...DANGEROUS LIGHTNING AS THEY CONTINUE TO MOVE A/CROSS NORTH
CENTRAL AND NORTHEAST SOUTH DAKOTA.

RESIDENTS IN THE PATHS OF THESE STORMS SHOULD BE PREPARED TO TAKE
SHELTER AND TAKE WHATEVER ACTION IS NECESSARY TO PROCTECT THEMSELVES.

 ADDISON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 10:18 AM CDT	Severe Thunderstorm Warning	ABR	Sully	27 min
Jul 18, 10:53 AM CDT	Severe Thunderstorm Warning	ABR	Hyde	37 min
Jul 18, 12:20 PM CDT	Severe Thunderstorm Warning	ABR	Faulk	55 min
Jul 18, 2:39 PM CDT	Severe Thunderstorm Warning	ABR	Clark	51 min
Jul 18, 3:39 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Hamlin	66 min
Jul 18, 5:42 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	63 min
Jul 18, 5:53 PM CDT	Severe Thunderstorm Warning	ABR	Sanborn	67 min
Jul 18, 6:46 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Potter	59 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.