Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 16, NWS Aberdeen, SD

June 21, 2002Hughes County, Hyde County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 21, 2002, 2:20 AM CDT for Hughes County, Hyde County, South Dakota. It was in force for 40 min. 1 report 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: Jun 21, 2002, 2:20 AM CDT (07:20 UTC)
Expired: Jun 21, 2002, 3:00 AM CDT
In force: 40 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

Counties Hughes County, SD, Hyde County, SD

The radar

The Aberdeen radar (KABR), 152 km from the middle of the area, began a volume at 07:22 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
Jun 21, 3:00 AM CDT	Hail 1	Harrold, 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.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 7.3 hours before the alert went out and 116 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: 2428 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KABR 210720
SVRABR
SDC065-069-210800-
/NEW.KABR.SV.W.0067.210720-210800/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
220 AM CDT FRI JUN 21 2002

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HUGHES COUNTY IN CENTRAL SOUTH DAKOTA
  HYDE COUNTY IN CENTRAL SOUTH DAKOTA

* UNTIL 300 AM CDT

* AT 220 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 20 MILES SOUTH OF HARROLD...OR ABOUT 14 MILES
  NORTHWEST OF LOWER BRULE...MOVING NORTH AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HARROLD...HOLABIRD AROUND 300 AM 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.

PARKIN

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 20, 8:35 PM CDT, 5 hours 45 minutes earlier.

Area forecast discussion, Jun 20, 8:35 PM CDT, 5 hours 45 minutes before

AREA FORECAST DISCUSSION FOR CENTRAL/N-EAST SD AND W-CENTRAL MN
NATIONAL WEATHER SERVICE ABERDEEN SD
835 PM CDT THU JUN 20 2002

ELEVATED CONVECTION HAS GENERALLY MOVED OUT OF THE CWA...ONLY A FEW
AREAS OF THE FAR NORTHEAST SEEING ANY ELEVATED ACTIVITY ATTM. NEXT
UPPER WAVE EJECTING OUT OF THE ROCKIES NOTED IN WATER VAPOR IMAGERY
IS COMBINING WITH LEE SIDE TROF OF WARM FRONT TO FIRE CONVECTION
EAST OF THE ROCKIES INTO WRN NE AND ERN WY. LATEST RUC SHOWS WARM
FRONT EDGING NORTH OVERNIGHT WITH SHORT WAVE AND ASSOCIATED MID LVL
OMEGA DRIFTING INTO THE CENTRAL/NORTHERN PLAINS THROUGH THE
OVERNIGHT HOURS. WOULD EXPECT ANY INITIAL CONVECTION THAT MOVES INTO
THE REGION LATE TONIGHT TO BEGIN AS ELEVATED ACTIVITY THEN BECOME
MORE SFC BASED AS WARM FRONT LIFTS NORTH AND BETTER LOW LVL MSTR
RETURNS. SFC DEW POINTS TO THE SOUTH ALREADY IN THE 50S WITH LOWER
60S IN NRN NEBRASKA. EXPECT THESE DEW POINTS TO ADVECT NORTH LATER
TONIGHT. PRIOR TO THIS CLOUD COVER SHOULD KEEP TEMPS FROM FALLING
TOO MUCH. HAVE ALREADY UPDATED TO RAISE OVERNIGHT TEMPS SLIGHTLY.
WILL UPDATE AGAIN TO CLEAN UP PCPN WORDING AND REMOVE EARLY ACTIVITY
FROM MOST AREAS TO CONCENTRATE ONLY ON OVERNIGHT ACTIVITY.

.ABR...NONE.
FAUCETTE

In the hours before

Local storm report, Jun 21, 2:16 AM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN, SD
216 AM CDT FRI JUN 21 2002

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

0200 AM    PIERRE                    SD   .88 INCH HAIL
06/21/02   HUGHES                         REPORTED BY LAW
                                          ENFORCEMENT

PARKIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 12:33 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman	27 min
Jun 21, 1:28 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	47 min
Jun 21, 1:57 AM CDT	Severe Thunderstorm Warning	ABR	Hand	48 min
Jun 21, 2:59 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde	46 min
Jun 21, 3:17 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Spink	43 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.