Alert archive / South Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 97, NWS Aberdeen, SD

July 1, 1997Stanley County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 1, 1997, 3:13 AM MDT for Stanley County, South Dakota. It was in force for 62 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
Jul 1, 1997, 3:13 AM MDT (09:13 UTC)
Expired
Jul 1, 1997, 4:15 AM MDT
In force
62 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Stanley County, SD

The radar

The Rapid City radar (KUDX), 170 km from the middle of the area, began a volume at 09:17 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

Rapid City, SD (KUNR), launched 00:00Z, 9.2 hours before the alert went out and 175 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, Rapid City, SD at 00:00Z on 1997-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1716 joules per kilogram.LCLLFCEL10008507005003002001001 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, Rapid City, SD at 00:00Z on 1997-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.1939587897Sfc1 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
1716 J/kg
Mixed-layer CIN
-123 J/kg
Mixed-layer LCL
1107 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KABR 010915 RRA
SVRABR
SDC117-011015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
413 AM CDT (313 AM MDT) TUE JUL 1 1997

* SEVERE THUNDERSTORM WARNING FOR
  STANLEY COUNTY - CENTRAL SOUTH DAKOTA

* UNTIL 415 AM MDT (515 AM CDT)
 
* SOME LOCATIONS AFFECTED
  HAYES                               AROUND 340 AM MDT

* AT 311 AM MDT...ABERDEEN DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 30 MILES NORTHEAST
  OF KADOKA OR 14 MILES SOUTH OF HAYES MOVING NORTH AT 25 MPH.

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

HG

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 30, 8:20 PM MDT, 6 hours 53 minutes earlier.

Area forecast discussion, Jun 30, 8:20 PM MDT, 6 hours 53 minutes before
AREA FORECAST DISCUSSION FOR CENTRAL/NORTH CENTRAL/NORTHEAST SD
AND FOR TRAVERSE/BIG STONE COUNTIES OF MN
NATIONAL WEATHER SERVICE ABERDEEN SD
920 PM CDT SUN JUN 30 1997

SEVERAL OUTFLOW BOUNDRIES FORM PREVIOUS MCS ARE MOVG THRU THE CWA
ATTM WHICH HAD TRIGGERED OFF A FEW TSTMS. THESE STORMS HAS WEAKEN
AND WILL BE ALL BUT GONE BY SUN SET. THIS SHUD LEAVE P/CLDY SKIES
FOR THE REST OF THE NIGHT & WILL UPDATE TO REMOVE PRECIP.

.ABR...NONE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 6:26 PM MDTSevere Thunderstorm WarningABRSully59 min
Jun 30, 7:44 PM MDTSevere Thunderstorm WarningABRHyde46 min
Jun 30, 8:19 PM MDTSevere Thunderstorm WarningABRFaulk76 min
Jun 30, 8:58 PM MDTSevere Thunderstorm WarningABRSpink32 min
Jun 30, 10:45 PM MDTSevere Thunderstorm WarningABRBrown35 min
Jul 1, 5:13 AM MDTSevere Thunderstorm WarningABRDewey62 min
Jul 1, 5:36 AM MDTSevere Thunderstorm WarningABRJones64 min
Jul 1, 6:47 AM MDTSevere Thunderstorm WarningABRJones48 min
Jul 1, 7:19 AM MDTSevere Thunderstorm WarningABRHughes, Stanley61 min
Jul 1, 11:07 AM MDTSevere Thunderstorm WarningABRHughes, Hyde, Sully63 min
Jul 1, 11:48 AM MDTSevere Thunderstorm WarningABRHand47 min
Jul 1, 12:20 PM MDTSevere Thunderstorm WarningABRSpink60 min
Jul 1, 12:38 PM MDTSevere Thunderstorm WarningABRCodington, Hamlin62 min
Jul 1, 2:22 PM MDTSevere Thunderstorm WarningABRHamlin48 min
Jul 1, 2:28 PM MDTSevere Thunderstorm WarningABRDay47 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1997Every 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.