Alert archive / South Dakota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 91, NWS Aberdeen, SD

July 3, 2001Dewey County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 3, 2001, 5:00 PM MDT for Dewey County, South Dakota. It was in force for 45 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 3, 2001, 5:00 PM MDT (23:00 UTC)
Expired: Jul 3, 2001, 5:45 PM MDT
In force: 45 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

County Dewey County, SD

The radar

The Bismarck radar (KBIS), 180 km from the middle of the area, began a volume at 23:02 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.

What was reported inside it

Time	Report	Where	Remark
Jul 3, 5:05 PM MDT	Hail 1.75	Firesteel, SD
Jul 3, 5:30 PM MDT	Hail 1.75	Eagle Butte, SD
Jul 3, 5:30 PM MDT	Hail 1.75	Parade, SD	Large hail broke many car windows in Parade.

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.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.0 hours before the alert went out and 180 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1876 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KABR 032300
SVRABR

SDC041-032345-
/NEW.KABR.SV.W.0135.032300-032345/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
500 PM MDT TUE JUL 3 2001

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

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

* UNTIL 545 PM MDT

* AT 500 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTH OF GREEN GRASS...OR ABOUT 18
  MILES NORTH OF EAGLE BUTTE...MOVING SOUTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GREEN GRASS AROUND 510 PM MDT
  PARADE AROUND 530 PM MDT

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 4534 10115 4527 10138 4498 10116 4487 10110
          4494 10085

FAUCETTE

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 Jul 3, 3:40 PM MDT, 1 hour 20 minutes earlier.

Area forecast discussion, Jul 3, 3:40 PM MDT, 1 hour 20 minutes before

AREA FORECAST DISCUSSION FOR CENTRAL/NORTHCENTRAL AND NORTHEAST
SOUTH DAKOTA AND WEST CENTRAL MINNESOTA
NATIONAL WEATHER SERVICE ABERDEEN SD
340 PM CST TUE JUL 3 2001

PERSISTENT MID LVL VORT LOBE IS SLOWLY MOVING SE ACROSS SRN ND THIS
AFTERNOON. WATER VAPOR IMAGERY DEPICTS SOME DRY MID LVL AIR IN THE
VICINITY OF THIS FEATURE. CONVECTION HAS BEEN FAIRLY PERSISTENT ON
THE BOUNDARY OF THIS MID LVL DRY THROUGH THE DAY...BUT TENDS TO
DISSIPATE AS IT MOVES INTO DRIER...SLIGHTLY MORE STABLE AIR ACROSS
NORTHEAST SD. MODELS CONTINUE DRAGGING THIS MID LVL FEATURE TO THE
SE THROUGH THE EVENING WITH ONLY THE AVN DEVELOPING ANY PCPN ACROSS
THE NE PORTION OF THE CWA. AVN APPEARS TO HAVE THE LOW LVL MOISTURE
OVER DONE WHEN CURRENT DEW POINTS ARE COMPARED TO FORECAST DEW
POINTS. THIS DRIER LOW LEVEL AIR MAY RESULT IN LITTLE PCPN REACHING
THE GROUND. MODELS ARE NOT AS AGGRESSIVE WITH THE ACTIVITY TO THE
WEST WHERE BETTER LOW LEVEL MOISTURE EXISTS. ALSO...ERN SECTIONS
REMAIN IN VICINITY OF SFC HIGH WHILE THE WEST IS CLOSER TO OUTFLOWS
FROM PREVIOUS NIGHTS CONVECTION ACROSS WRN SD AND WEAKLY FORCED SFC
TROF EXTENDING FROM NW SD INTO FAR NRN SD. WITH THIS IN MIND WILL
CONTINUE SCATTERED THUNDERSTORMS FOR THE WEST THIS EVENING AND WILL
ADD LOW POPS TO THE EAST AS WELL THIS EVENING.

UPPER LVL RIDGE SHOULD BEGIN TO PUSH EAST WEDNESDAY AND THURSDAY
WITH WAA INCREASING AHEAD OF IT ON THURSDAY. AHEAD OF THIS...WX
APPEARS TRANQUIL AS SFC HIGH REMAINS IN PLACE ACROSS THE FAR EAST.
MODELS TRY TO REDEVELOP AN MCS LATE WEDNESDAY ACROSS NE WY AND SW
SD AND THIS MAY BRUSH SW PORTIONS OF THE CWA. SW CWA WILL REMAIN THE
MOST UNSTABLE AREA THROUGH THE FORECAST...SO WILL ADD LOW POPS
WEDNESDAY NIGHT TO THIS AREA. LEE SIDE TROFFING NOTED IN MODELS FOR
FRIDAY TO THE WEST OF THE CWA...WHICH COULD BE THE PRECURSOR TO
UNSETTLED WX IN THE EXTENDED PORTION...IF MID LVL TEMPS DO NOT WARM
TOO MUCH FOR CONVECTION TO DEVELOP.

.EXTENDED DISCUSSION...
MODELS ARE IN PRETTY GOOD AGREEMENT TODAY WITH JUST SOME MINOR
DIFFERENCES IN TIMING OF SURFACE FEATURES. THE UPPER PATTERN WILL BE
DOMINATED BY HIGH PRESSURE OVER THE SOUTHERN PLAINS. THIS RIDGE
RETROGRADES BACK TO THE WEST A BIT ON MONDAY AND TUESDAY...BUT
REMAINS DOMINANT. A SERIES OF SHORTWAVES WILL RIDE OVER THE RIDGE
ACROSS PORTIONS OF THE NORTHERN PLAINS THROUGHOUT THE PERIOD. THE
FIRST...ON FRIDAY...LOOKS TO REMAIN WELL NORTH OF THE CWA...BUT ONE
MOVES THROUGH THE CWA ON SUNDAY...AND ANOTHER LATE MONDAY. AT THE
SURFACE...A COLD FRONT PUSHES ACROSS THE NORTHERN PLAINS ON
FRIDAY...BUT THE BEST ENERGY WILL BE FAR ENOUGH TO NORTH TO KEEP THE
BETTER PRECIP CHANCES THERE. WEAK HIGH PRESSURE PUSHES THROUGH ON
SATURDAY BEFORE THE NEXT FRONT MOVES INTO THE REGION LATE SUNDAY
INTO MONDAY. WEAK HIGH PRESSURE LOOKS TO DOMINATE AGAIN ON TUESDAY.
WILL CARRY A CHANCE OF SHOWERS LATE FRIDAY WITH THE FRONT MOVING
THROUGH THE NORTHERN AND EASTERN CWA...THEN AGAIN SUNDAY AND MONDAY
WHEN THE TIMING OF THE SURFACE FRONT AND THE UPPER WAVES MATCH
BETTER. GUIDANCE TEMPS WERE ALL PRETTY CLOSE...WITH TEMPS GENERALLY
NEAR NORMAL THROUGHOUT THE PERIOD.

.ABR...NONE.

FAUCETTE/PARKIN

In the hours before

Local storm report, Jul 3, 2:45 PM MDT, 2 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN, SD
345 PM CDT TUE JUL 3 2001

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

0335 PM    TIMBER LAKE               SD   70 MPH TSTM WIND GUST
07/03/01   DEWEY                          REPORTED BY LAW
                                          ENFORCEMENT

KWH

Local storm report, Jul 3, 4:03 PM MDT, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN, SD
503 PM CDT TUE JUL 3 2001

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

0345 PM    MORRISTOWN                SD   1.25 INCH HAIL
07/03/01   CORSON

TK
@RUKWBCeKDENWWUS30 KABR 032203 CCA
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN, SD
503 PM CDT TUE JUL 3 2001

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

0445 PM    MORRISTOWN                SD   1.25 INCH HAIL
07/03/01   CORSON

TK

Local storm report, Jul 3, 4:03 PM MDT, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN, SD
503 PM CDT TUE JUL 3 2001

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

0445 PM    MORRISTOWN                SD   1.25 INCH HAIL
07/03/01   CORSON

TK

Local storm report, Jul 3, 4:40 PM MDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN, SD
540 PM CDT TUE JUL 3 2001

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

0520 PM    4 SE BLACK HORSE          SD   .75 INCH HAIL
07/03/01   CORSON

TDK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 1:52 PM MDT	Severe Thunderstorm Warning	ABR	Corson	23 min
Jul 3, 2:17 PM MDT	Severe Thunderstorm Warning	ABR	Dewey	43 min
Jul 3, 2:59 PM MDT	Severe Thunderstorm Warning	ABR	Dewey	61 min
Jul 3, 3:34 PM MDT	Severe Thunderstorm Warning	ABR	Corson	41 min
Jul 3, 4:20 PM MDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	40 min
Jul 3, 5:01 PM MDT	Severe Thunderstorm Warning	ABR	Corson	14 min
Jul 3, 5:15 PM MDT	Tornado Warning	ABR	Dewey	30 min
Jul 3, 5:49 PM MDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley	26 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2001 Every severe thunderstorm warning in 2001

Sources

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.