Alert archive / South Dakota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 39, NWS Rapid City, SD

June 6, 2015Todd County, Tripp County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at Jun 6, 2015, 6:06 PM CDT for Todd County, Tripp County, South Dakota. It was in force for 39 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 6, 2015, 6:06 PM CDT (23:06 UTC)
Expired: Jun 6, 2015, 6:45 PM CDT
In force: 39 min
Issued by: NWS Rapid City, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Todd County, SD, Tripp County, SD

The radar

The North Platte radar (KLNX), 148 km from the middle of the area, began a volume at 23:09 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 12:00Z, 11.1 hours before the alert went out and 226 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: 65 J/kg
Mixed-layer CIN: -190 J/kg
Mixed-layer LCL: 1039 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Rapid City, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 6, 4:28 PM CDT, 1 hour 38 minutes earlier.

Area forecast discussion, Jun 6, 4:28 PM CDT, 1 hour 38 minutes before

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Hazardous weather outlook, Jun 6, 4:37 AM CDT, 13 hours 29 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
337 AM MDT SAT JUN 6 2015

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-070945-
HARDING-PERKINS-BUTTE-NORTHERN MEADE CO PLAINS-ZIEBACH-
NORTHERN BLACK HILLS-NORTHERN FOOT HILLS-RAPID CITY-
SOUTHERN FOOT HILLS-CENTRAL BLACK HILLS-SOUTHERN BLACK HILLS-
CUSTER CO PLAINS-PENNINGTON CO PLAINS-HAAKON-FALL RIVER-SHANNON-
JACKSON-BENNETT-MELLETTE-TODD-TRIPP-STURGIS/PIEDMONT FOOT HILLS-
SOUTHERN MEADE CO PLAINS-HERMOSA FOOT HILLS-NORTHERN CAMPBELL-
SOUTHERN CAMPBELL-WESTERN CROOK-WYOMING BLACK HILLS-WESTON-
NORTHEASTERN CROOK-
337 AM MDT SAT JUN 6 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.

.DAY ONE...TODAY AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED AGAIN
TODAY...MAINLY IN THE AFTERNOON AND EVENING HOURS. THERE IS A
SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF SOUTH
CENTRAL SOUTH DAKOTA THIS AFTERNOON AND EVENING. THESE STORM WILL
BE CAPABLE OF PRODUCING LARGE HAIL AND STRONG WIND GUSTS.

HIGH STREAM FLOWS WITH SOME MINOR FLOODING WILL CONTINUE ON SOME
CREEKS AND STREAMS IN THE BLACK HILLS AND THE ADJACENT PLAINS...AS
WELL AS PORTIONS OF NORTHEASTERN WYOMING. ADDITIONAL RAINFALL
TODAY ALONG WITH SATURATED SOILS COULD AGGRAVATE FLOODING
CONDITIONS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS SUNDAY ACROSS NORTHEAST
WYOMING THROUGH SOUTHWEST SOUTH DAKOTA. SEVERE WEATHER IS NOT
EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY.

&&

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER DETAILS OR UPDATES...
OR CHECK OUR WEB SITE AT WEATHER.GOV/RAPIDCITY

In the hours before

Local storm report, Jun 6, 2:41 PM CDT, 3 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
141 PM MDT SAT JUN 06 2015

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

0140 PM     FLASH FLOOD      ARDMORE                 43.02N 103.66W
06/06/2015                   FALL RIVER         SD   TRAINED SPOTTER

            COUNTY RD 5 IMPASSIBLE .5 MILE WEST OF ARDMORE... HAT
            CREEK OVER RUNNING BRIDGE... WATER ABOUT 2 FEET DEEP

&&

ME

Local storm report, Jun 6, 3:16 PM CDT, 2 hours 50 minutes before

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Local storm report, Jun 6, 3:27 PM CDT, 2 hours 39 minutes before

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Special weather statement, Jun 6, 5:16 PM CDT, 50 minutes before

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Special weather statement, Jun 6, 5:24 PM CDT, 42 minutes before

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Special weather statement, Jun 6, 5:46 PM CDT, 20 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 9:41 PM CDT	Special Weather Statement	UNR	Fall River	49 min
Jun 5, 9:52 PM CDT	Special Weather Statement	UNR	Fall River	23 min
Jun 5, 10:38 PM CDT	Special Weather Statement	UNR	Fall River	37 min
Jun 5, 11:45 PM CDT	Special Weather Statement	UNR	Fall River	45 min
Jun 6, 12:57 PM CDT	Special Weather Statement	UNR	Custer	48 min
Jun 6, 1:31 PM CDT	Flash Flood Warning	UNR	Pennington	3 hr
Jun 6, 2:26 PM CDT	Areal Flood Warning	UNR	Jackson, Pennington	3 days
Jun 6, 2:31 PM CDT	Areal Flood Warning	UNR	Custer, Pennington	7 days
Jun 6, 3:09 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	51 min
Jun 6, 5:16 PM CDT	Special Weather Statement	UNR	Todd	59 min
Jun 6, 5:24 PM CDT	Special Weather Statement	UNR	Tripp	51 min
Jun 6, 5:53 PM CDT	Severe Thunderstorm Warning	UNR	Todd, Tripp	52 min
Jun 6, 6:51 PM CDT	Special Weather Statement	UNR	Tripp	54 min
Jun 6, 5:46 PM CDT	Special Weather Statement	UNR	Weston	44 min
Jun 6, 6:00 PM CDT	Severe Thunderstorm Warning	UNR	Weston	60 min

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.