Alert archive / South Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 69, NWS Aberdeen, SD

June 28, 1997Brown County, McPherson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 28, 1997, 9:14 AM CDT for Brown County, McPherson County, South Dakota. It was in force for 51 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: Jun 28, 1997, 9:14 AM CDT (14:14 UTC)
Expired: Jun 28, 1997, 10:05 AM CDT
In force: 51 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

Counties Brown County, SD, McPherson County, SD

The radar

The Aberdeen radar (KABR), 38 km from the middle of the area, began a volume at 14:14 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 28, 9:00 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 2.2 hours before the alert went out and 92 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: 3944 J/kg
Mixed-layer CIN: -170 J/kg
Mixed-layer LCL: 854 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KABR 281414 RRA
SVRABR
SDC013-089-281505-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
914 AM CDT SAT JUN 28 1997

* SEVERE THUNDERSTORM WARNING FOR
  BROWN COUNTY - NORTHEASTERN SOUTH DAKOTA
  EASTERN MCPHERSON COUNTY - NORTHEASTERN SOUTH DAKOTA

* UNTIL 1005 AM CDT
 
* SOME LOCATIONS AFFECTED
  WETONKA                             AROUND 910 AM CDT
  LEOLA
  PLAINVIEW COLONY
  FREDERICK                    
  RICHMOND LAKE
  WESTPORT

* AT 911 AM CDT...ABERDEEN DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS 24 MILES NORTHWEST OF ABERDEEN OR 8 MILES NORTH OF
  WETONKA MOVING EAST AT 25 MPH.

GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS!
REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR
NO ADVANCE WARNING!

HG/LVQ

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 Jun 27, 8:58 PM CDT, 12 hours 16 minutes earlier.

Area forecast discussion, Jun 27, 8:58 PM CDT, 12 hours 16 minutes before

AREA FORECAST DISCUSSION FOR CENTRAL/NORTH CENTRAL/NORTHEAST SD
AND FOR TRAVERSE/BIG STONE COUNTIES OF MN
NATIONAL WEATHER SERVICE ABERDEEN SD
9 PM CDT FRI JUN 28 1997

THIS EVE SNDG SHWS CAP OF 4.4 WITH B+ AT 5280 J/KG...SI AT -7...
LI AT -12 AND TOTAL TOTALS AT 59.  WE SHUD BE THANKFUL FOR THE CAP.
THE LO LVL JET OVR CWA HAS DCRD AS XPCTD & THE WNDS HAS DROP BLO 10
KTS OVR THE PIR AREA. RAOB ALSO SHWS WNDS ALFT HAS DCRD A LTL THIS
EVE. THIS SHUD SLO THE MOVMT OF ANY STRMS TNGT. ABR 88D IS PICKING
UP THE SVR STRMS OVR ND & NRN MN BUT ALSO ARND RAP & VTN. MDLS SHWS
LTL MOVMT IN FNT OVR ND & TROF OVR WRN SD TNGT. THUS & WITH THE CAP
WE MAY NOT SEE ANY TSTMS OVR CWA TIL AFTR MIDNGT OR POSSIBLY  ERLY
MRNG. CRNT TEMPS OVR CWA A LTL LWR THAN MOS GUID BUT FEEL MOS OVR
NGT LOWS LOOKS GUD. THEREFORE...FCST LOOK O.K. FOR NOW & DO NOT XPCT
TO UPDATE ATTM.

.ABR...NONE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 8:24 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	46 min
Jun 28, 8:53 AM CDT	Tornado Warning	ABR	Edmunds	47 min
Jun 28, 8:58 AM CDT	Tornado Warning	ABR	Faulk, Potter	47 min
Jun 28, 9:38 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds	47 min
Jun 28, 9:55 AM CDT	Severe Thunderstorm Warning	ABR	Spink	65 min
Jun 28, 10:05 AM CDT	Severe Thunderstorm Warning	ABR	Brown	45 min
Jun 28, 10:47 AM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	63 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1997 Every severe thunderstorm warning in 1997

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.