Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 85, NWS Aberdeen, SD

July 2, 2002Clark County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 2, 2002, 11:57 AM CDT for Clark County, South Dakota. It was in force for 48 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 2, 2002, 11:57 AM CDT (16:57 UTC)
Expired: Jul 2, 2002, 12:45 PM CDT
In force: 48 min
Issued by: NWS Aberdeen, SD
Area: Counties, with a storm outline in the text

County Clark County, SD

The radar

The Aberdeen radar (KABR), 67 km from the middle of the area, began a volume at 17:01 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 2, 12:05 PM CDT	Hail 0.75	Raymond, 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.

Did it verify

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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 2, 10:30 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 5.0 hours before the alert went out and 51 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: 1723 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

153 
WUUS53 KABR 021657
SVRABR
SDC025-021745-
/NEW.KABR.SV.W.0144.021657-021745/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
1157 AM CDT TUE JUL 2 2002

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLARK COUNTY IN NORTHEAST SOUTH DAKOTA

* UNTIL 1245 PM CDT

* AT 1157 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 12 MILES SOUTHWEST OF CROCKER...OR ABOUT 16
  MILES NORTHWEST OF CLARK...MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CROCKER AROUND 1210 PM CDT
  BRADLEY...HILLCREST COLONY AROUND 1220 PM CDT
  GARDEN CITY AROUND 1225 PM CDT

THIS IS A DANGEROUS STORM. TAKE SHELTER NOW

THIS STORM HAS A HISTORY OF PRODUCING LARGE 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 4512 9797 4492 9796 4492 9751 4514 9750

HINTZ

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 2, 10:00 AM CDT, 1 hour 57 minutes earlier.

Area forecast discussion, Jul 2, 10:00 AM CDT, 1 hour 57 minutes before

AREA FORECAST DISCUSSION FOR CENTRAL/N-EAST SD AND W-CENTRAL MN
NATIONAL WEATHER SERVICE ABERDEEN SD
1000 AM CDT TUE JUL 2 2002

CONVECTION CONTINUES ALONG EAST-WEST BOUNDARY...AND SOME BACK
BUILDING HAS BEEN OCCURRING. THIS CONVECTION SHOULD SLOWLY SLIDE
SOUTHEAST TODAY...BUT HIGHER DEWPOINTS AND GOOD SOUTHERLY FLOW
SHOULD KEEP CONVECTION ACTIVE AS IT MOVES.

WILL UPDATE FORECAST TO DROP TEMPERATURES A BIT IN AREAS OF HEAVY
RAIN AND COUNTIES EAST DUE TO MASSIVE CIRRUS BLOW OFF. THIS CIRRUS
SHIELD WILL DELAY HEATING A FEW HOURS...AND WILL DROP TEMPS A CAT
AREAS EAST OF CURRENT CONVECTION. OUTFLOW ALSO LEFT BEHIND AND SEEN
ON PIR ASOS...SO WILL DROP TEMPS A BIT THERE TO ALLOW FOR THIS.

UPDATE OUT SOON.

.ABR...NONE

HARDING

In the hours before

Local storm report, Jul 2, 10:04 AM CDT, 1 hour 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN, SD
1004 AM CDT TUE JUL 2 2002

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

0650 AM    23 N HIGHMORE             SD   .75 INCH HAIL
07/02/02   HYDE                           REPORTED BY
PUBLIC

0720 AM    7 NW POLO                 SD   1.00 INCH HAIL
07/02/02   HAND                           REPORTED BY
PUBLIC

0749 AM    1 S MIRANDA               SD   1.00 INCH HAIL
07/02/02   FAULK                          REPORTED BY
PUBLIC

0820 AM    8NW REDFIELD              SD   1.75 INCH HAIL
07/02/02   SPINK                          REPORTED BY
PUBLIC

0842 AM    4 W FAULKTON              SD   .75 INCH HAIL
07/02/02   FAULK                          REPORTED BY
PUBLIC

0940 AM    4 NE MIRANDA              SD   .75 INCH HAIL
07/02/02   FAULK                          REPORTED BY
PUBLIC

0920 AM    4 NW ATHOL                SD   .75 INCH HAIL
07/02/02   SPINK                          REPORTED BY
PUBLIC

0925 AM    3 SE BRENTFORD            SD   1.00 INCH HAIL
07/02/02   SPINK                          REPORTED BY
PUBLIC

GM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 6:44 AM CDT	Severe Thunderstorm Warning	ABR	Hand, Hyde	46 min
Jul 2, 7:30 AM CDT	Severe Thunderstorm Warning	ABR	Faulk	45 min
Jul 2, 8:07 AM CDT	Severe Thunderstorm Warning	ABR	Spink	68 min
Jul 2, 8:23 AM CDT	Severe Thunderstorm Warning	ABR	Faulk	52 min
Jul 2, 9:13 AM CDT	Severe Thunderstorm Warning	ABR	Faulk	47 min
Jul 2, 9:19 AM CDT	Severe Thunderstorm Warning	ABR	Spink	26 min
Jul 2, 9:58 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Spink	47 min
Jul 2, 10:42 AM CDT	Severe Thunderstorm Warning	ABR	Faulk	18 min
Jul 2, 10:43 AM CDT	Severe Thunderstorm Warning	ABR	Spink	47 min
Jul 2, 11:32 AM CDT	Severe Thunderstorm Warning	ABR	Spink	28 min

Nearby

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

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.