Severe Thunderstorm Warning 95, NWS Aberdeen, SD

Issued

Jul 20, 2002, 2:06 AM MDT (08:06 UTC)

Expired

Jul 20, 2002, 2:45 AM MDT

In force

39 min

Issued by

NWS Aberdeen, SD

Area

Counties, with a storm outline in the text

County Corson County, SD

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.

070 
WUUS53 KABR 200806
SVRABR
SDC031-200845-
/NEW.KABR.SV.W.0163.200803-200845/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
203 AM MDT SAT JUL 20 2002

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CORSON COUNTY IN NORTH CENTRAL SOUTH DAKOTA

* UNTIL 245 AM MDT

* AT 203 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  LINE OF SEVERE THUNDERSTORMS EXTENDING FROM 15 MILES SOUTHWEST OF  
  BULLHEAD TO NEAR MCINTOSH...MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BULLHEAD AROUND 210 AM MDT
  WALKER AROUND 215 AM MDT
  LITTLE EAGLE AROUND 220 AM MDT
  MCLAUGHLIN AROUND 225 AM MDT
  MAHTO...WAKPALA AROUND 230 AM MDT

THIS STORM MAY PRODUCE HAIL AND DAMAGING WIND. GO INSIDE A STURDY 
BUILDING AND STAY AWAY FROM WINDOWS.

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

LAT...LON 4592 10128 4550 10117 4563 10042 4594 10049

PARKIN

NWS Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 20, 1:30 AM MDT, 36 minutes earlier.

AREA FORECAST DISCUSSION FOR CENTRAL/N-EAST SD AND W-CENTRAL MN
NATIONAL WEATHER SERVICE ABERDEEN SD
230 AM CDT SAT JUL 20 2002

PCPN CHC FIRST PERIOD AND THEN TEMPS ARE THE MAIN FORECAST QUANDRY.

FOR TODAY MODELS ALL QUITE SIMILAR WITH MID AND LOW LEVEL FEATURES.
WARM FRONT CURRENTLY LIFTING NORTH ACROSS SOUTHERN SOUTH DAKOTA AS
SFC LOW DEVELOPS TOWARD CENTRAL SOUTH DAKOTA.  MEANWHILE IT APPEARS
THAT MID LEVEL WAVE IS MOVING ACROSS NW SD AND SW ND.  COMBINATION
OF TWO WEATHER FEATURES AND COPIOUS MOISTURE HAS PRODUCED A
GRADUALLY GROWING AREA OF ELEVATED ALMOST TROPICAL LIKE
THUNDERSTORMS ACROSS NORTHERN CWA.  OVERALL EXPECT SVR WEATHER TO BE
LIMITED TO POSSIBLE WIND GUSTS GIVEN VERY WARM MID LEVEL TEMPS. THIS
ACTIVITY TO LAST FOR A NUMBER OF HOURS THIS MORNING BEFORE WANING OR
MOVING OFF TO THE EAST.  SECOND ROUND MAY GET GOING OVER EASTERN AND
SOUTHERN CWA THIS AFTERNOON AS FRONT PRESSES INTO VERY WARM AND
MOIST AIR.  HOWEVER BEST MID LEVEL DYNAMICS WILL AGAIN BE OVER AREAS
NORTH OF MY CWA AND ETA MAINTAINS RESPECTABLE MID LEVEL WARMTH.  ALL
THAT SAID...MAIN COVERAGE OF RAIN COULD VERY WELL BE THIS
MORNING.

FOR TNT ALL MODELS HAVE SLOWED DOWN THE SOUTHWARD MOVEMENT OF
FRONTAL BOUNDARY.  MEANWHILE ANOTHER PIECE OF MID LEVEL ENERGY
EXPECTED TO MOVE ACROSS REGION.  THEREFORE WILL KEEP SOME MENTION OF
PCPN FOR TNT ACROSS EAST AND FAR SOUTHERN CWA.  FOR SUNDAY HIGH
PRESSURE BUILDS IN WITH GRADUALLY DECREASING DEWPOINTS AND MILDER
TEMPS WHICH SHOULD LAST INTO MONDAY.  AT THIS TIME DIDNT MAKE ANY
CHANGES TO THE EXTENDED.

.ABR...NONE.
TDK

Severe 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.