Alert archive / South Dakota / Mesoscale Discussions in 2015
Mesoscale Discussion 1307
The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2015, 3:46 PM CDT for 4 states. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Jul 5, 2015, 3:46 PM CDT (20:46 UTC)
- Expired
- Jul 5, 2015, 5:45 PM CDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 58 counties
Lyon County, IA, Plymouth County, IA, Sioux County, IA, Lincoln County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Boyd County, NE, Brown County, NE, Cedar County, NE, Cherry County, NE, Dawes County, NE, Holt County, NE, Keya Paha County, NE, Knox County, NE, Rock County, NE, Sheridan County, NE, Aurora County, SD, Beadle County, SD, Bennett County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clay County, SD, Custer County, SD, Davison County, SD, Deuel County, SD, Douglas County, SD, Fall River County, SD, Gregory County, SD, Haakon County, SD, Hamlin County, SD, Hanson County, SD, Hutchinson County, SD, Jackson County, SD, Jerauld County, SD, Jones County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Lyman County, SD, McCook County, SD, Meade County, SD, Mellette County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Oglala Lakota County, SD, Pennington County, SD, Sanborn County, SD, Todd County, SD, Tripp County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The North Platte radar (KLNX), 206 km from the middle of the area, began a volume at 20:49 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Rapid City, SD (KRAP), launched 12:00Z, 8.8 hours before the alert went out and 251 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
- 357 J/kg
- Mixed-layer CIN
- -280 J/kg
- Mixed-layer LCL
- 2268 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 9:54 AM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Cass, Clay, Clearwater, Hubbard and 6 more | 96 min |
| Jul 5, 10:40 AM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Clay, Clearwater, Hubbard, Mahnomen and 5 more | 7 hr |
| Jul 5, 1:19 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Big Stone, Cass, Chippewa, Clay and 22 more | 86 min |
| Jul 5, 5:02 PM CDT | Mesoscale Discussion | SPC | Aitkin, Carlton, Cass, Cook, Crow Wing, Itasca and 2 more | 118 min |
| Jul 5, 4:51 PM CDT | Severe Thunderstorm Watch | SPC | Arthur, Box Butte, Boyd, Brown, Cherry, Cheyenne and 10 more | 7 hr |
Nearby
Mesoscale Discussions in South Dakota, 2015Mesoscale Discussions in Nebraska, 2015Mesoscale Discussions in Minnesota, 2015Every mesoscale discussion 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.