Alert archive / South Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 8, NWS Aberdeen, SD

May 17, 1997Roberts County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at May 17, 1997, 9:26 PM CDT for Roberts County, South Dakota. It was in force for 49 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 17, 1997, 9:26 PM CDT (02:26 UTC)
Expired: May 17, 1997, 10:15 PM CDT
In force: 49 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

County Roberts County, SD

The radar

The Aberdeen radar (KABR), 116 km from the middle of the area, began a volume at 02:29 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
May 17, 7:15 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.4 hours before the alert went out and 140 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: 590 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 2608 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KABR 180226 RRA
SVRABR
SDC109-180315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
926 PM CDT SAT MAY 17 1997

* SEVERE THUNDERSTORM WARNING FOR
  EASTERN ROBERTS COUNTY - IN NORTHEASTERN SOUTH DAKOTA

* UNTIL 1015 PM CDT
 
* PLEASE TAKE COVER IF YOU ARE IN THE WARNED AREA.

* AT 924 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY ABERDEEN
  DOPPLER RADAR 14 MILES SOUTHEAST OF SISSETON OR 5 MILES SOUTHEASTR
  OF PEEVER MOVING EAST AT 30 MPH.

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

GS/DEE

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 17, 9:11 PM CDT, 15 minutes earlier.

Area forecast discussion, May 17, 9:11 PM CDT, 15 minutes before

AREA FORECAST DISCUSSION FOR CENTRAL/NORTH CENTRAL/NORTHEAST SD
AND FOR TRAVERSE/BIG STONE COUNTIES OF MN
NATIONAL WEATHER SERVICE ABERDEEN SD
910 PM CDT SAT MAY 17 1997

88D & SAT PIX SHWS SCT SHWRS & TSTMS SHUD CONT ACRS CWA THRU MIDNGT.
CRNT FCST HOLDING UP JUST FINE.  NO NEED TO FIX WHAT ISN`T BROKEN.

In the hours before

Local storm report, May 17, 9:15 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  ABERDEEN SD
915 PM CDT SAT MAY 17 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0750 PM    2 N BRITTON               SD   1.75 INCH HAIL
05/17/97   MARSHALL

0750 PM    BRITTON                   SD   0.75 INCH HAIL
05/17/97   MARSHALL

0830 PM    LAKE CITY                 SD   0.75 INCH HAIL
05/17/97   MARSHALL

NWS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 7:08 PM CDT	Tornado Warning	ABR	Brown, Marshall	32 min
May 17, 7:41 PM CDT	Tornado Warning	ABR	Marshall	19 min
May 17, 8:02 PM CDT	Tornado Warning	ABR	Marshall	33 min
May 17, 8:38 PM CDT	Severe Thunderstorm Warning	ABR	Marshall, Roberts	47 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.