Alert archive / South Dakota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 152, NWS Aberdeen, SD

August 6, 2007Hand County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 6, 2007, 10:28 AM CDT for Hand County, South Dakota. It was in force for 47 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
Aug 6, 2007, 10:28 AM CDT (15:28 UTC)
Expired
Aug 6, 2007, 11:15 AM CDT
In force
47 min
Issued by
NWS Aberdeen, SD
Area
Counties, with a storm outline in the text

County Hand County, SD

The radar

The Aberdeen radar (KABR), 111 km from the middle of the area, began a volume at 15:29 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 nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 3.5 hours before the alert went out and 62 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-pSkew-T log-p diagram, Aberdeen, SD at 12:00Z on 2007-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2007-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
29 J/kg
Mixed-layer CIN
-323 J/kg
Mixed-layer LCL
1008 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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 Aug 6, 3:40 AM CDT, 6 hours 48 minutes earlier.

Area forecast discussion, Aug 6, 3:40 AM CDT, 6 hours 48 minutes before
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Hazardous weather outlook, Aug 6, 4:58 AM CDT, 5 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
458 AM CDT MON AUG 6 2007

SDZ003>006-009>011-016>020-022-034>037-048-051-071000-
CORSON-CAMPBELL-MCPHERSON-BROWN-WALWORTH-EDMUNDS-DAY-POTTER-FAULK-
SPINK-CLARK-CODINGTON-HAMLIN-SULLY-HUGHES-HYDE-HAND-LYMAN-BUFFALO-
458 AM CDT MON AUG 6 2007 /358 AM MDT MON AUG 6 2007/

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE POSSIBLE TODAY ACROSS PORTIONS OF CENTRAL AND
EASTERN SOUTH DAKOTA. A FEW STORMS COULD BECOME SEVERE WITH LARGE
HAIL AND STRONG WINDS BEING THE MAIN THREATS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

OFF AND ON CHANCES FOR THUNDERSTORMS EXIST THROUGH MUCH OF THE
WEEK AS THE WEATHER PATTERN REMAINS A BIT MORE ACTIVE THAN RECENT
WEEKS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON ACROSS PORTIONS
OF CENTRAL SOUTH DAKOTA.

MNZ039-046-SDZ007-008-021-023-071000-
TRAVERSE-BIG STONE-MARSHALL-ROBERTS-GRANT-DEUEL-
458 AM CDT MON AUG 6 2007

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

.DAY ONE...TODAY AND TONIGHT

AREAS OF DENSE FOG WILL OCCUR THROUGH SUNRISE ACROSS EXTREME
NORTHEASTERN SOUTH DAKOTA AS WELL AS BIG STONE AND TRAVERSE
COUNTIES IN MINNESOTA. VISIBILITIES MAY BE REDUCED TO LESS THAN
ONE QUARTER MILE AT TIMES.

THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON BUT THE SEVERE THREAT
APPEARS TO BE LIMITED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

OFF AND ON CHANCES FOR THUNDERSTORMS EXIST THROUGH MUCH OF THE
WEEK AS THE WEATHER PATTERN REMAINS A BIT MORE ACTIVE THAN RECENT
WEEKS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.

SDZ015-033-045-071000-
DEWEY-STANLEY-JONES-
458 AM CDT MON AUG 6 2007 /358 AM MDT MON AUG 6 2007/

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE POSSIBLE TODAY ACROSS PORTIONS OF CENTRAL SOUTH
DAKOTA. A FEW STORMS COULD BECOME SEVERE WITH LARGE HAIL AND
STRONG WINDS BEING THE MAIN THREATS.

THE GRASSLAND FIRE DANGER WILL REACH THE HIGH TO VERY HIGH
CATEGORY THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

OFF AND ON CHANCES FOR THUNDERSTORMS EXIST THROUGH MUCH OF THE
WEEK AS THE WEATHER PATTERN REMAINS A BIT MORE ACTIVE THAN RECENT
WEEKS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON ACROSS PORTIONS
OF CENTRAL SOUTH DAKOTA.

TMT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 8:43 PM CDTSevere Thunderstorm WarningABRCorson20 min
Aug 6, 5:40 PM CDTSevere Thunderstorm WarningABRHughes, Hyde37 min
Aug 6, 5:59 PM CDTTornado WarningABRLyman46 min
Aug 6, 6:24 PM CDTSevere Thunderstorm WarningABRHand, Hyde36 min
Aug 6, 6:44 PM CDTSevere Thunderstorm WarningABRLyman40 min
Aug 6, 6:59 PM CDTFlash Flood WarningABRHand, Hyde3 hr
Aug 6, 6:59 PM CDTFlash Flood WarningABRHand, Hyde3 hr
Aug 6, 6:59 PM CDTFlash Flood WarningABRHand, Hyde3 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2007Every 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.