Alert archive / South Dakota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 1, NWS Aberdeen, SD

May 17, 2013Jones County, Stanley County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at May 17, 2013, 7:41 PM CDT for Jones County, Stanley County, South Dakota. It was in force for 49 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: May 17, 2013, 7:41 PM CDT (00:41 UTC)
Expired: May 17, 2013, 8:30 PM CDT
In force: 49 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jones County, SD, Stanley County, SD

The radar

The Rapid City radar (KUDX), 169 km from the middle of the area, began a volume at 00:44 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 (KUNR), launched 00:00Z, 0.7 hours before the alert went out and 173 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: 514 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1707 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 7.2

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 May 17, 6:12 PM CDT, 1 hour 29 minutes earlier.

Area forecast discussion, May 17, 6:12 PM CDT, 1 hour 29 minutes before

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Hazardous weather outlook, May 17, 10:29 AM CDT, 9 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
1029 AM CDT FRI MAY 17 2013

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-181530-
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-
1029 AM CDT FRI MAY 17 2013 /929 AM MDT FRI MAY 17 2013/

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

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP LATER THIS
AFTERNOON AND EVENING ALONG A FRONTAL ZONE. SOME OF THESE COULD
BECOME SEVERE MAINLY ALONG AND WEST OF THE MISSOURI RIVER.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THUNDERSTORMS ARE EXPECTED TO DEVELOP AGAIN DURING THE AFTERNOON
AND NIGHTTIME HOURS SATURDAY. SOME OF THESE STORMS COULD BECOME
SEVERE AND PRODUCE LARGE HAIL AND DAMAGING WINDS. ISOLATED
TORNADOES ARE POSSIBLE AS WELL.

ADDITIONAL THUNDERSTORMS WILL BE POSSIBLE DURING THE AFTERNOON
AND EVENING HOURS ON SUNDAY. THE SEVERE WEATHER POSSIBILITIES ARE
EXPECTED TO BE EAST OF THE JAMES VALLEY. SOME OF THESE STORMS
COULD BECOME SEVERE.

ADDITIONAL SHOWERS AND THUNDERSTORMS ARE EXPECTED FROM MONDAY
THROUGH TUESDAY WITH NO SEVERE WEATHER EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND TONIGHT
AND AGAIN SATURDAY AFTERNOON AND NIGHT.

MOHR

In the hours before

Special weather statement, May 17, 7:17 PM CDT, 24 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 8:14 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Jones, Stanley	61 min
May 17, 11:35 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Faulk, Spink	55 min
May 18, 12:12 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Codington, Day, Grant, Hamlin and 1 more	63 min
May 18, 5:31 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	44 min
May 18, 6:06 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley, Sully	39 min
May 18, 6:11 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	49 min
May 18, 6:46 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley, Sully	44 min
May 18, 6:52 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	38 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2013 Every severe thunderstorm warning in 2013

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.