Alert archive / South Dakota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 78, NWS Aberdeen, SD

July 2, 2015Buffalo County, Lyman County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 2, 2015, 5:28 AM CDT for Buffalo County, Lyman County, South Dakota. It was in force for 62 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: Jul 2, 2015, 5:28 AM CDT (10:28 UTC)
Expired: Jul 2, 2015, 6:30 AM CDT
In force: 62 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Buffalo County, SD, Lyman County, SD

The radar

The Aberdeen radar (KABR), 186 km from the middle of the area, began a volume at 10:28 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

Rapid City, SD (KRAP), launched 00:00Z, 10.5 hours before the alert went out and 268 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: 382 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 1913 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -1.3

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 Jul 2, 3:07 AM CDT, 2 hours 21 minutes earlier.

Area forecast discussion, Jul 2, 3:07 AM CDT, 2 hours 21 minutes before

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Hazardous weather outlook, Jul 2, 3:15 AM CDT, 2 hours 13 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
315 AM CDT THU JUL 2 2015

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-030815-
TRAVERSE-BIG STONE-CORSON-CAMPBELL-MCPHERSON-BROWN-MARSHALL-
ROBERTS-WALWORTH-EDMUNDS-DAY-DEWEY-POTTER-FAULK-SPINK-CLARK-
CODINGTON-GRANT-HAMLIN-DEUEL-STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-
LYMAN-BUFFALO-
315 AM CDT THU JUL 2 2015

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

.DAY ONE...TODAY AND TONIGHT

A FEW STRONG STORMS ARE POSSIBLE THIS MORNING AND AGAIN THIS
AFTERNOON...WITH AN ISOLATED SEVERE STORM. THE RISK IS MAINLY FOR
HAIL AND STRONG WINDS. AGAIN...WIDESPREAD SEVERE WEATHER IS NOT
EXPECTED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

ADDITIONAL OPPORTUNITIES FOR STORMS EXIST SATURDAY AFTERNOON AS
WELL AS SUNDAY AFTERNOON AND OVERNIGHT. THE RISK FOR SEVERE
WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

CONNELLY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 5:15 AM CDT	Flash Flood Warning	ABR	Hyde, Potter, Sully	6 hr
Jul 2, 5:16 AM CDT	Flash Flood Warning	ABR	Corson	6 hr
Jul 2, 6:51 AM CDT	Severe Thunderstorm Warning	ABR	Lyman	24 min
Jul 2, 11:13 AM CDT	Special Weather Statement	ABR	Edmunds, Faulk	2 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2015 Every severe thunderstorm warning in 2015

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.