Severe Thunderstorm Warning 8, NWS Aberdeen, SD

Issued

Jun 6, 2002, 8:05 PM CDT (01:05 UTC)

Expired

Jun 6, 2002, 8:45 PM CDT

In force

40 min

Issued by

NWS Aberdeen, SD

Area

Counties, with a storm outline in the text

Counties Big Stone County, MN, Roberts County, SD

The Aberdeen radar (KABR), 138 km from the middle of the area, began a volume at 01:07 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.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WUUS53 KABR 070105
SVRABR
MNC011-SDC109-070145-
/NEW.KABR.SV.W.0049.070105-070145/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
805 PM CDT THU JUN 6 2002

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ROBERTS COUNTY IN NORTHEAST SOUTH DAKOTA
  BIG STONE COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 845 PM CDT

* AT 805 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 6 MILES NORTH OF YANKEETOWN TO 5
  MILES SOUTH OF WILMOT...OR FROM 16 MILES EAST OF SISSETON TO 15
  MILES NORTHWEST OF MILBANK...MOVING EAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  YANKEETOWN AROUND 810 PM CDT
  BONANZA GROVE AROUND 815 PM CDT
  GRACEVILLE AROUND 830 PM CDT
  LAGOONA BEACH...CLINTON AROUND 840 PM CDT

THIS IS A DANGEROUS STORM. TAKE SHELTER NOW

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
ABERDEEN.

LAT...LON 4558 9688 4533 9703 4533 9629 4558 9617

TDK

NWS Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 6, 3:40 PM CDT, 4 hours 25 minutes earlier.

AREA FORECAST DISCUSSION FOR CENTRAL/N-EAST SD AND W-CENTRAL MN
NATIONAL WEATHER SERVICE ABERDEEN SD
340 PM CDT THU JUN 6 2002

FORECAST CONTINUES TO BE TRICKY WITH THE ETA AND AVN STILL DIFFERING
ON SOME FEATURES. WILL LEAN JUST A BIT MORE TOWARD THE
ETA...ESPECIALLY FOR PRECIP AMOUNTS...WITH SOME BLEND OF THE AVN AS
WELL. A STRONG UPPER LOW WILL SPIN OVER WESTERN CANADA TONIGHT AND
FRIDAY BEFORE BEGINNING TO SLIDE SOUTHWARD FRIDAY NIGHT. THE LOW
BECOMES MORE OF AN ELONGATED TROUGH OVER THE ROCKIES BY SATURDAY
EVENING AND REMAINS THERE THROUGH MONDAY MORNING.

THE SURFACE TROUGH/FRONT CURRENTLY SLOWLY MOVING THROUGH THE CWA
WILL BE OVER THE SOUTH DAKOTA/NEBRASKA BORDER ON FRIDAY...WITH THE
SURFACE LOW OVER WESTERN NEBRASKA INTENSIFYING. HIGH PRESSURE WILL
NOSE INTO THE NORTHERN CWA TONIGHT...WITH THE MAIN INSTABILITY
REMAINING OVER THE FAR EASTERN CWA. WILL KEEP A MENTION OF
THUNDERSTORMS OVER THAT AREA FOR THIS EVENING. ETA INDICATED SOME
STABILIZING OF THE ATMOSPHERE ON FRIDAY FROM THE WEAK HIGH OVER THE
AREA. BY LATE IN THE AFTERNOON...THE FRONT BEGINS TO MAKE ITS WAY
BACK TO THE NORTH AND DECENT MOISTURE BEGINS TO STREAM BACK WITH IT.
WILL KEEP THE CHANCE FOR THUNDERSTORMS MENTIONED FOR FRIDAY
AFTERNOON AND EVENING. A DECENT SURFACE BOUNDARY REMAINS NEAR THE
AREA ON SATURDAY AND SUNDAY...WITH THE MODELS INDICATING DECENT
MOISTURE AND INSTABILITY WITH IT...SO SEE NO REASON TO REMOVE THE
MENTION OF THUNDERSTORMS FOR THOSE TWO DAYS. BASICALLY...THIS
FORECAST PERIOD WILL BE A COMBINATION OF UNSTABLE CONDITIONS AND A
BOUNDARY IN THE REGION. SO...THUNDERSTORMS ARE BOUND TO OCCUR EACH
DAY WITH JUST THE TIMING BEING THE QUESTION.

.EXTENDED DISCUSSION...

CONFIDENCE IN EXTENDED PERIOD REMAINS ELUSIVE TODAY.  WILL GO WITH
THE FLOW USING THE BEST COMPROMISE AND WAIT FOR REFINING MODEL
RUNS.  PERIOD OPENS WITH WESTERN UPPER LOW MOVING OUT OF THE FOUR
CORNERS REGION TOWARD THIS AREA.  MOISTURE FEED SETS UP AHEAD OF
SYSTEM AND OLD BAROCLINIC ZONE LINGERS GIVING CONVECTION AND
PRECIPITATION A FOCUS POINT.  WILL GO PRETTY CLOSE TO GOING FORECAST
AS CURRENT MODEL RUN GIVES NO REASON YET TO DOUBT TIMING. WILL DELAY
ENDING OF PRECIPITATION SLIGHTLY OTHERWISE LITTLE CHANGE.
TEMPERATURES LOOK TO STAY SEASONAL THROUGH THE PERIOD.

.ABR...NONE.

PARKIN/KEEFE

Severe Thunderstorm Warnings in Minnesota, 2002Severe Thunderstorm Warnings in South Dakota, 2002Every severe thunderstorm warning in 2002

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.