Alert archive / South Dakota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 3, NWS Aberdeen, SD

May 14, 1998Lyman County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at May 14, 1998, 8:50 PM CDT for Lyman County, South Dakota. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 14, 1998, 8:50 PM CDT (01:50 UTC)
Expired
May 14, 1998, 9:40 PM CDT
In force
50 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Lyman County, SD

The radar

The Aberdeen radar (KABR), 207 km from the middle of the area, began a volume at 01:50 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 1.8 hours before the alert went out and 160 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 1998-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2296 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 1998-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.19395878Sfc1 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
2296 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1504 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
116 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 150150 RRA
SVRABR
SDC085-150240-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
850 PM CDT THU MAY 14 1998

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN LYMAN COUNTY IN CENTRAL SOUTH DAKOTA

* UNTIL 940 PM CDT

* AT 848 PM CDT... ABERDEEN DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM 22 MILES SOUTH OF CHAMBERLAIN OR 4 MILES SOUTHEAST OF
  IONA MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  IONA                 AT 855 PM CDT

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!

HG/MM

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.

NWS Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at May 14, 10:00 AM CDT, 10 hours 50 minutes earlier.

Area forecast discussion, May 14, 10:00 AM CDT, 10 hours 50 minutes before
AREA FORECAST DISCUSSION FOR CENTRAL/NORTH CENTRAL/NORTHEAST SD
AND FOR TRAVERSE/BIG STONE COUNTIES OF MN
NATIONAL WEATHER SERVICE ABERDEEN SD
10 AM CDT THU MAY 14 1998

ABR 12Z SOUNDING QUITE IMPRESSIVE FOR MID MAY IN NE SD. REAL DECENT
INSTABILITY BUT A STRONG CAP IN PLACE (ABOUT 6.0C)...7H TEMP +11C.
WOW AM TEMPTED TO TAKE OUT ANY MENTION OF TSRA THIS AFTN NE CWA AS
WILL HAVE TO AWAIT DAYTIME HEATING AND LIFT FROM SYS MOVING OUT OF
SW US FOR THINGS TO POP. MIGHT BE A BIT EASIER TO GET SOME COVECTION
IN CENTRAL ZONES UNDER COOLER TEMPS ALOFT BUT ALSO SOME DRYING
OCCURRING IN BOUNDARY LAYER VIA NW WINDS. WILL BE UPDATING ZONES TO
BEEF UP WNDS AND TEMPS IN FEW PLACES.

.ABR...NONE.
TDK

The office that day

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

IssuedProductOfficeCountiesLasted
May 14, 7:44 PM CDTTornado WarningABRLyman46 min
May 14, 9:41 PM CDTSevere Thunderstorm WarningABRCodington, Day29 min
May 14, 9:58 PM CDTSevere Thunderstorm WarningABRGrant, Roberts47 min
May 14, 10:09 PM CDTSevere Thunderstorm WarningABRDay46 min
May 14, 11:06 PM CDTSevere Thunderstorm WarningABRHamlin49 min
May 14, 11:26 PM CDTSevere Thunderstorm WarningABRLyman34 min
May 15, 3:40 AM CDTSevere Thunderstorm WarningABRCodington, Hamlin30 min
May 15, 4:37 AM CDTSevere Thunderstorm WarningABRGrant33 min
May 15, 2:52 PM CDTFlash Flood WarningABRSpink4 hr
May 15, 2:57 PM CDTFlash Flood WarningABRSpink4 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 1998Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.