Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 74, NWS Aberdeen, SD

June 28, 1997Traverse County, Minnesota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 28, 1997, 10:47 AM CDT for Traverse County, Minnesota. It was in force for 63 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, 10:47 AM CDT (15:47 UTC)
Expired: Jun 28, 1997, 11:50 AM CDT
In force: 63 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

County Traverse County, MN

The radar

The Aberdeen radar (KABR), 155 km from the middle of the area, began a volume at 15:47 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, 3.8 hours before the alert went out and 179 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.

094 
WUUS1 KABR 281548 RRA
SVRABR
MNC155-SDC037-091-109-281650-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
1047 AM CDT SAT JUN 28 1997

* SEVERE THUNDERSTORM WARNING FOR
  DAY COUNTY - NORTHEASTERN SOUTH DAKOTA
  NORTHERN ROBERTS COUNTY - NORTHEASTERN SOUTH DAKOTA
  EASTERN MARSHALL COUNTY - NORTHEASTERN SOUTH DAKOTA
  TRAVERSE COUNTY - WEST CENTRAL MINNESOTA

* UNTIL 1150 AM CDT
 
* SOME LOCATIONS AFFECTED
  LAKE CITY                           AROUND 1046 AM CDT
  EDEN                                AROUND 1045 AM CDT
  GRENVILLE                           AROUND 1050 AM CDT
  VEBLEN                              AROUND 1050 AM CDT
  WAUBAY                              AROUND 1100 AM CDT
  CLAIRE CITY                         AROUND 1105 AM CDT
  HAMMER                              AROUND 1110 AM CDT
  SISSETON                            AROUND 1110 AM CDT
  NEW EFFINGTON                       AROUND 1115 AM CDT
  SUMMIT                              AROUND 1120 AM CDT
  PEEVER                              AROUND 1120 AM CDT
  VICTOR                              AROUND 1125 AM CDT
  BROWNS VALLEY                       AROUND 1125 AM CDT
  WILMOT                              AROUND 1130 AM CDT
  ROSHOLT                             AROUND 1130 AM CDT
  CORONA                              AROUND 1135 AM CDT

* AT 1044 AM CDT...ABERDEEN DOPPLER RADAR AND LOCAL LAW ENFORCEMENT
  INDICATED A LINE OF SEVERE THUNDERSTORMS 21 MILES WEST OF SISSETON
  OR 3 MILES WEST OF EDEN MOVING EAST AT 40 MPH.

THIS STORM HAS A HISTORY OF DAMAGING WINDS OVER 60 MPH. GO INSIDE A
STURDY BUILDING AND STAY AWAY FROM WINDOWS

MM/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 27, 8:58 PM CDT, 13 hours 49 minutes earlier.

Area forecast discussion, Jun 27, 8:58 PM CDT, 13 hours 49 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, 11:21 AM CDT	Severe Thunderstorm Warning	ABR	Big Stone	64 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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.