Alert archive / South Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 302, NWS Rapid City, SD

August 8, 2016Meade County, Pennington County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at Aug 8, 2016, 6:50 PM MDT for Meade County, Pennington County, South Dakota. It was in force for 55 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 8, 2016, 6:50 PM MDT (00:50 UTC)
Expired
Aug 8, 2016, 7:45 PM MDT
In force
55 min
Issued by
NWS Rapid City, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Meade County, SD, Pennington County, SD

The radar

The Rapid City radar (KUDX), 18 km from the middle of the area, began a volume at 00:53 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, 0.8 hours before the alert went out and 26 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, Rapid City, SD at 00:00Z on 2016-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 682 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, Rapid City, SD at 00:00Z on 2016-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -23 square meters per square second.19395878Sfc1 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
682 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
1879 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
19 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 Aug 8, 2:19 PM MDT, 4 hours 31 minutes earlier.

Area forecast discussion, Aug 8, 2:19 PM MDT, 4 hours 31 minutes before
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Hazardous weather outlook, Aug 8, 6:49 AM MDT, 12 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
649 AM MDT MON AUG 8 2016

WYZ054>056-058-071-091300-
NORTHERN CAMPBELL-SOUTHERN CAMPBELL-WESTERN CROOK-WESTON-
NORTHEASTERN CROOK-
649 AM MDT MON AUG 8 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
WYOMING.

.DAY ONE...TODAY AND TONIGHT

THERE IS A CHANCE FOR AFTERNOON AND EVENING THUNDERSTORMS ACROSS
THE AREA. THERE IS A MARGINAL RISK FOR SEVERE STORMS LATE THIS
AFTERNOON INTO THE EVENING. THE MAIN THREAT FROM ANY SEVERE
STORMS WILL BE STRONG WIND GUSTS...WITH HAIL ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A FIRE WEATHER WATCH IS IN EFFECT FOR TUESDAY AFTERNOON AND EARLY
EVENING. A VERY DRY AND HOT AIRMASS WILL SETTLE OVER MUCH OF
NORTHEAST WYOMING TUESDAY AFTERNOON...BEHIND A DRY LINE AND AHEAD
OF A COLD FRONT TO THE NORTH OF THE AREA. RELATIVE HUMIDITIES WILL
DROP TO 10 TO 15 PERCENT ACROSS MUCH OF THE NORTHEAST WYOMING
PLAINS. WINDS WILL BECOME SOUTH TO SOUTHWEST IN THE
AFTERNOON...WITH BREEZY CONDITIONS POSSIBLE...ESPECIALLY NEAR AND
SOUTH OF INTERSTATE 90. CRITICAL FIRE WEATHER CONDITIONS COULD
DEVELOP DURING THE AFTERNOON AND PERSIST INTO THE EARLY EVENING.

THERE IS A DAILY CHANCE FOR THUNDERSTORMS ACROSS MUCH OF THE AREA
THIS WEEK. THERE IS A MARGINAL RISK FOR SEVERE STORMS ACROSS FAR
NORTHEAST WYOMING LATE TUESDAY...WITH STRONG WIND GUSTS THE MAIN
THREAT FROM ANY SEVERE STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

&&

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

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ057-
091300-
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-
OGLALA LAKOTA-JACKSON-BENNETT-MELLETTE-TODD-TRIPP-
STURGIS/PIEDMONT FOOT HILLS-SOUTHERN MEADE CO PLAINS-
HERMOSA FOOT HILLS-WYOMING BLACK HILLS-
649 AM MDT MON AUG 8 2016 /749 AM CDT MON AUG 8 2016/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
SOUTH DAKOTA...THE BLACK HILLS OF SOUTH DAKOTA...WESTERN SOUTH
DAKOTA...AND THE BLACK HILLS OF WYOMING.

.DAY ONE...TODAY AND TONIGHT

THERE IS A CHANCE FOR AFTERNOON AND EVENING THUNDERSTORMS ACROSS
THE AREA. THERE IS A MARGINAL RISK FOR SEVERE STORMS...WITH THE
MAIN THREATS FROM ANY SEVERE STORMS BEING LARGE HAIL AND STRONG
WIND GUSTS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THERE IS A DAILY CHANCE FOR THUNDERSTORMS ACROSS MUCH OF THE AREA
THIS WEEK. THERE IS A SLIGHT RISK FOR SEVERE STORMS TUESDAY
AFTERNOON AND EVENING FROM NORTHWEST TO WEST CENTRAL SOUTH
DAKOTA...WITH LARGE HAIL AND STRONG WIND GUSTS THE MAIN THREATS
FROM ANY SEVERE STORMS. A MARGINAL RISK FOR SEVERE STORMS IS
EXPECTED OVER THE REST OF THE AREA ON TUESDAY. THERE IS ALSO A
MARGINAL RISK FOR SEVERE STORMS ON WEDNESDAY TO THE EAST OF THE
BLACK HILLS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT 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

Special weather statement, Aug 8, 5:37 PM MDT, 1 hour 13 minutes before
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Special weather statement, Aug 8, 5:47 PM MDT, 1 hour 3 minutes before
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Local storm report, Aug 8, 5:50 PM MDT, 1 hour before
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Local storm report, Aug 8, 6:23 PM MDT, 27 minutes before
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Local storm report, Aug 8, 6:27 PM MDT, 23 minutes before
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Local storm report, Aug 8, 6:40 PM MDT, 10 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 6:26 PM MDTSevere Thunderstorm WarningUNRMeade, Pennington41 min
Aug 8, 6:30 PM MDTSevere Thunderstorm WarningUNRFall River, Oglala Lakota60 min
Aug 8, 7:11 PM MDTSpecial Weather StatementUNRJackson49 min
Aug 8, 7:24 PM MDTSevere Thunderstorm WarningUNRBennett, Oglala Lakota46 min
Aug 8, 7:29 PM MDTSevere Thunderstorm WarningUNRHaakon, Jackson, Oglala Lakota, Pennington91 min
Aug 8, 7:40 PM MDTSevere Thunderstorm WarningUNRHaakon, Meade, Pennington, Perkins, Ziebach95 min
Aug 8, 9:05 PM MDTSpecial Weather StatementUNRBennett, Mellette, Todd55 min
Aug 9, 4:51 PM MDTSpecial Weather StatementUNRLawrence39 min
Aug 9, 5:02 PM MDTSevere Thunderstorm WarningUNRCuster, Pennington58 min
Aug 9, 5:16 PM MDTSpecial Weather StatementUNRCuster44 min
Aug 9, 5:23 PM MDTSpecial Weather StatementUNRLawrence52 min
Aug 9, 5:36 PM MDTSevere Thunderstorm WarningUNRCuster, Pennington39 min
Aug 9, 4:20 AM MDTRed Flag WarningUNR16 hr
Aug 9, 3:59 PM MDTSevere Thunderstorm WarningUNRWeston40 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2016Every severe thunderstorm warning in 2016

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.