Alert archive / South Dakota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 94, NWS Aberdeen, SD

June 12, 20076 counties in South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 12, 2007, 1:07 PM MDT for 6 counties in South Dakota. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 12, 2007, 1:07 PM MDT (19:07 UTC)
Expired: Jun 12, 2007, 2:00 PM MDT
In force: 53 min
Issued by: NWS Aberdeen, SD
Area: Counties, with a storm outline in the text

Counties Dewey County, SD, Hughes County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 161 km from the middle of the area, began a volume at 19:07 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 12, 1:02 PM MDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 7.1 hours before the alert went out and 149 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: 1009 J/kg
Mixed-layer CIN: -226 J/kg
Mixed-layer LCL: 1002 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -82 m²/s²
0-3 km storm-relative helicity: -69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

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 12, 10:37 AM MDT, 2 hours 30 minutes earlier.

Area forecast discussion, Jun 12, 10:37 AM MDT, 2 hours 30 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Jun 12, 4:56 AM MDT, 8 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
556 AM CDT TUE JUN 12 2007

SDZ003>005-009-010-015>017-033>037-045-048-051-131100-
CORSON-CAMPBELL-MCPHERSON-WALWORTH-EDMUNDS-DEWEY-POTTER-FAULK-
STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-LYMAN-BUFFALO-
556 AM CDT TUE JUN 12 2007 /456 AM MDT TUE JUN 12 2007/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH
DAKOTA AND NORTH CENTRAL SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

A SLOW MOVING COLD FRONT WILL SLIDE THROUGH THE AREA TODAY INTO
TONIGHT BRINGING A CHANCE FOR SHOWERS AND THUNDERSTORMS TO
CENTRAL AND NORTH CENTRAL SOUTH DAKOTA. THERE IS A SLIGHT RISK FOR
SEVERE THUNDERSTORMS WITH ANY THUNDERSTORM DEVELOPMENT. THE MAIN
SEVERE THREATS WITH THIS SYSTEM ARE DAMAGING WINDS AND FLASH
FLOODING...ALTHOUGH THE POSSIBILITY OF LARGE HAIL OR AN ISOLATED
TORNADO ALSO EXISTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE CHANCE FOR SHOWERS AND THUNDERSTORMS STILL EXISTS INTO
WEDNESDAY ACROSS CENTRAL AND NORTH CENTRAL SOUTH DAKOTA. THE
POSSIBILITY FOR HEAVY RAIN WILL CONTINUE INTO WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON INTO TONIGHT.

SDZ006-007-011-018-019-131100-
BROWN-MARSHALL-DAY-SPINK-CLARK-
556 AM CDT TUE JUN 12 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST SOUTH
DAKOTA.

.DAY ONE...TODAY AND TONIGHT

A SLOW MOVING COLD FRONT WILL SLIDE THROUGH THE AREA THIS
AFTERNOON INTO TONIGHT BRINGING A CHANCE FOR SHOWERS AND
THUNDERSTORMS TO A PORTION OF NORTHEAST SOUTH DAKOTA. THERE IS
A SLIGHT RISK FOR SEVERE THUNDERSTORMS WITH ANY THUNDERSTORM
DEVELOPMENT. THE MAIN SEVERE THREATS WITH THIS SYSTEM ARE DAMAGING
WINDS AND FLASH FLOODING...ALTHOUGH THE POSSIBILITY OF LARGE HAIL
OR AN ISOLATED TORNADO ALSO EXISTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE CHANCE FOR SHOWERS AND THUNDERSTORMS STILL EXISTS INTO
WEDNESDAY ACROSS NORTHEAST SOUTH DAKOTA. THE POSSIBILITY FOR
HEAVY RAIN WILL CONTINUE INTO WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING INTO TONIGHT.

MNZ039-046-SDZ008-020>023-131100-
TRAVERSE-BIG STONE-ROBERTS-CODINGTON-GRANT-HAMLIN-DEUEL-
556 AM CDT TUE JUN 12 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MINNESOTA AND NORTHEAST SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

A SLOW MOVING COLD FRONT WILL SLIDE THROUGH THE AREA LATE TONIGHT
BRINGING A CHANCE FOR SHOWERS AND THUNDERSTORMS TO EXTREME
NORTHEAST SOUTH DAKOTA...AND WEST CENTRAL MINNESOTA. THE MAIN
THREAT WITH ANY THUNDERSTORM DEVELOPMENT ACROSS EXTREME NORTHEAST
SOUTH DAKOTA AND WEST CENTRAL MINNESOTA...WILL BE FLASH
FLOODING...SMALL HAIL AND STRONG WINDS...WITH MUCH OF THE SEVERE
THUNDERSTORM POTENTIAL REMAINING JUST TO THE WEST OF THE AREA AT
THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE CHANCE FOR SHOWERS AND THUNDERSTORMS STILL EXISTS INTO
WEDNESDAY AND WEDNESDAY NIGHT...ACROSS EXTREME NORTHEAST SOUTH
DAKOTA AND WEST CENTRAL MINNESOTA. THE POSSIBILITY FOR HEAVY RAIN
WILL CONTINUE INTO WEDNESDAY AND WEDNESDAY NIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE TONIGHT.

ALBRECHT

In the hours before

Local storm report, Jun 12, 11:00 AM MDT, 2 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE ABERDEEN SD
1200 PM CDT TUE JUN 12 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0710 PM     HAIL             9 NNW ISABEL            45.52N 101.50W
06/11/2007  E0.75 INCH       CORSON             SD   PUBLIC

0720 PM     HAIL             ISABEL                  45.40N 101.43W
06/11/2007  E0.88 INCH       DEWEY              SD   PUBLIC

0750 PM     HAIL             BULLHEAD                45.77N 101.08W
06/11/2007  E0.88 INCH       CORSON             SD   TRAINED SPOTTER

0830 PM     TSTM WND GST     4 WSW TRAIL CITY        45.45N 100.81W
06/11/2007  E60.00 MPH       DEWEY              SD   PUBLIC

&&
CORRECTED THE TIME ON ALL REPORTS TO CDT.

WFO ABR

Local storm report, Jun 12, 11:02 AM MDT, 2 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE ABERDEEN SD
1202 PM CDT TUE JUN 12 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1100 PM     HAIL             6 SE MCINTOSH           45.86N 101.26W
06/10/2007  E0.88 INCH       CORSON             SD   CO-OP OBSERVER

            ALSO 1.61 INCHES OF RAIN.

1145 PM     HAIL             WALKER                  45.91N 101.09W
06/10/2007  E0.88 INCH       CORSON             SD   PUBLIC

1145 PM     TSTM WND GST     WALKER                  45.91N 101.09W
06/10/2007  E70.00 MPH       CORSON             SD   PUBLIC

            SHINGLES BLEW OFF OF ROOF

0100 AM     HAIL             7 ESE EUREKA            45.73N 99.49W
06/11/2007  E0.75 INCH       MCPHERSON          SD   PUBLIC

&&
UPDATED SUMMARY FOR LATE SUNDAY EVENING EVENT.

WFO ABR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 6:14 PM MDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	46 min
Jun 11, 6:48 PM MDT	Severe Thunderstorm Warning	ABR	Dewey	57 min
Jun 11, 6:58 PM MDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Walworth	62 min
Jun 12, 12:56 PM MDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	26 min
Jun 12, 2:29 PM MDT	Flash Flood Warning	ABR	Buffalo, Campbell, Corson, Dewey, Edmunds, Faulk and 10 more	6 hr
Jun 12, 4:10 PM MDT	Severe Thunderstorm Warning	ABR	Corson	20 min
Jun 12, 4:32 PM MDT	Tornado Warning	ABR	Potter	28 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2007 Every severe thunderstorm warning in 2007

Sources

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