Alert archive / South Dakota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 129, NWS Rapid City, SD
NWS Rapid City, SD issued this severe thunderstorm warning at Jun 26, 2011, 11:09 AM MDT for Haakon County, Ziebach County, South Dakota. It was in force for 43 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 26, 2011, 11:09 AM MDT (17:09 UTC)
- Expired
- Jun 26, 2011, 11:52 AM MDT
- In force
- 43 min
- Issued by
- NWS Rapid City, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Haakon County, SD, Ziebach County, SD
The radar
The Rapid City radar (KUDX), 113 km from the middle of the area, began a volume at 17:11 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 3, 10:24 PM MST | Severe Thunderstorm Watch | SPC | 157 days |
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 5.2 hours before the alert went out and 120 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.
- Mixed-layer CAPE
- 277 J/kg
- Mixed-layer CIN
- -195 J/kg
- Mixed-layer LCL
- 837 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
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 26, 10:36 AM MDT, 33 minutes earlier.
Area forecast discussion, Jun 26, 10:36 AM MDT, 33 minutes before
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</html>Hazardous weather outlook, Jun 26, 8:30 AM MDT, 2 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 830 AM MDT SUN JUN 26 2011 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-271300- BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON- HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK- NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS- NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY- SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS- SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP- WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH- 830 AM MDT (930 AM CDT) SUN JUN 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE AGAIN EXPECTED OVER THE AREA TODAY INTO THIS EVENING. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS MAY BECOME SEVERE. LARGE HAIL WILL BE THE MAIN THREAT...THOUGH DAMAGING WIND GUSTS WILL ALSO BE POSSIBLE. THERE WILL ALSO BE A TORNADIC THREAT IN THE AFTERNOON INTO THE EARLY EVENING HOURS...PARTICULARLY OVER SOUTHWEST INTO SOUTH CENTRAL SOUTH DAKOTA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY CHANCES FOR THUNDERSTORMS RETURN FOR WEDNESDAY NIGHT INTO THURSDAY ...THOUGH AT THIS TIME WIDESPREAD SEVERE WEATHER IS NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY...ESPECIALLY SOUTH AND EAST OF THE BLACK HILLS.
In the hours before
Special weather statement, Jun 26, 6:20 AM MDT, 4 hours 49 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 620 AM MDT SUN JUN 26 2011 SDZ031-042-043-261300- JACKSON SD-PENNINGTON CO PLAINS SD-SHANNON SD- 620 AM MDT SUN JUN 26 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PENNINGTON... NORTHWESTERN JACKSON AND NORTHEASTERN SHANNON COUNTIES UNTIL 700 AM MDT... AT 618 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12 MILES WEST OF INTERIOR...OR 37 MILES WEST OF KADOKA...MOVING NORTHEAST AT 40 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS STORM... ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... INTERIOR... CEDAR PASS... MINUTEMAN MISSILE SITE... CACTUS FLAT... COTTONWOOD... THIS INCLUDES INTERSTATE 90 BETWEEN SOUTH DAKOTA MILE MARKERS 122 AND 144... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. RUDGE
Local storm report, Jun 26, 6:30 AM MDT, 4 hours 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
630 AM MDT SUN JUN 26 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 PM HEAVY RAIN 1 SW DOWNTOWN STURGIS 44.40N 103.53W
06/25/2011 M2.20 INCH MEADE SD TRAINED SPOTTER
1/4 TO 1/2 INCH HAIL MIXED IN.
&&
WFO UNR STAFFLocal storm report, Jun 26, 11:04 AM MDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
1104 AM MDT SUN JUN 26 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0420 AM TSTM WND GST 5 E PORCUPINE 43.24N 102.23W
06/26/2011 E60 MPH SHANNON SD TRAINED SPOTTER
0315 AM TSTM WND GST 5 SSW LUDLOW 45.77N 103.43W
06/26/2011 E60 MPH HARDING SD TRAINED SPOTTER
0848 AM TSTM WND GST 1 N ROCKYFORD 43.51N 102.50W
06/26/2011 E60 MPH SHANNON SD TRAINED SPOTTER
0848 AM HAIL 1 N ROCKYFORD 43.51N 102.50W
06/26/2011 E1.00 INCH SHANNON SD TRAINED SPOTTER
0405 AM TSTM WND GST 6 E RALPH 45.79N 102.94W
06/26/2011 E60 MPH PERKINS SD TRAINED SPOTTER
0943 AM TSTM WND GST 1 N BUFFALO 45.60N 103.55W
06/26/2011 M73 MPH HARDING SD ASOS
&&
JSCHILDThe office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 6:33 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 57 min |
| Jun 25, 6:53 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 42 min |
| Jun 25, 7:00 PM MDT | Severe Thunderstorm Warning | UNR | Fall River | 30 min |
| Jun 25, 7:26 PM MDT | Severe Thunderstorm Warning | UNR | 35 min | |
| Jun 25, 7:29 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 46 min |
| Jun 25, 7:58 PM MDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 62 min |
| Jun 25, 8:02 PM MDT | Severe Thunderstorm Warning | UNR | Bennett | 28 min |
| Jun 25, 8:05 PM MDT | Areal Flood Advisory | UNR | Meade, Pennington | 3 hr |
| Jun 25, 8:07 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 53 min |
| Jun 25, 8:14 PM MDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 61 min |
| Jun 25, 8:51 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Meade, Pennington | 54 min |
| Jun 25, 9:13 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Meade | 62 min |
| Jun 25, 9:44 PM MDT | Areal Flood Advisory | UNR | Meade | 6 hr |
| Jun 25, 10:02 PM MDT | Severe Thunderstorm Warning | UNR | Meade | 40 min |
| Jun 25, 10:23 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence, Meade | 31 min |
| Jun 26, 1:34 AM MDT | Areal Flood Advisory | UNR | Meade, Pennington | 8 hr |
| Jun 26, 2:10 AM MDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 41 min |
| Jun 26, 3:00 AM MDT | Areal Flood Advisory | UNR | Bennett, Custer, Jackson, Pennington | 6 hr |
| Jun 26, 3:07 AM MDT | Severe Thunderstorm Warning | UNR | Harding | 68 min |
| Jun 26, 3:58 AM MDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 62 min |
| Jun 26, 4:15 AM MDT | Severe Thunderstorm Warning | UNR | Bennett | 48 min |
| Jun 26, 4:37 AM MDT | Severe Thunderstorm Warning | UNR | Perkins | 24 min |
| Jun 26, 7:19 AM MDT | Severe Thunderstorm Warning | UNR | Harding | 56 min |
| Jun 26, 8:46 AM MDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Pennington | 59 min |
| Jun 26, 9:03 AM MDT | Areal Flood Advisory | UNR | Bennett, Custer, Jackson, Pennington | 6 hr |
| Jun 26, 10:24 AM MDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 66 min |
| Jun 26, 10:53 AM MDT | Severe Thunderstorm Warning | UNR | Ziebach | 19 min |
| Jun 26, 12:19 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Meade, Pennington | 56 min |
| Jun 26, 12:55 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 65 min |
| Jun 26, 1:54 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 32 min |
| Jun 26, 2:15 PM MDT | Severe Thunderstorm Warning | UNR | Pennington | 41 min |
| Jun 26, 2:22 PM MDT | Severe Thunderstorm Warning | UNR | Fall River | 53 min |
| Jun 26, 2:37 PM MDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 53 min |
| Jun 26, 3:18 PM MDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 57 min |
| Jun 26, 3:22 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Pennington | 53 min |
| Jun 26, 3:37 PM MDT | Severe Thunderstorm Warning | UNR | Fall River | 53 min |
| Jun 26, 3:51 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Pennington, Ziebach | 41 min |
| Jun 26, 4:12 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Pennington | 63 min |
| Jun 26, 4:32 PM MDT | Severe Thunderstorm Warning | UNR | Fall River | 58 min |
| Jun 26, 5:46 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 59 min |
| Jun 26, 5:49 PM MDT | Flash Flood Warning | UNR | Fall River | 65 min |
| Jun 25, 7:15 PM MDT | Severe Thunderstorm Warning | UNR | Weston | 45 min |
| Jun 25, 8:11 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Weston | 27 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2011Every severe thunderstorm warning in 2011
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.