Alert archive / Texas / Mesoscale Discussions in 2018
Mesoscale Discussion 871
The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2018, 9:49 PM CDT for 5 counties in Kansas; 12 counties in Oklahoma; 13 counties in Texas. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Jun 24, 2018, 9:49 PM CDT (02:49 UTC)
- Expired
- Jun 24, 2018, 11:15 PM CDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
All 30 counties
Barber County, KS, Clark County, KS, Comanche County, KS, Kiowa County, KS, Pratt County, KS, Beaver County, OK, Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Harper County, OK, Major County, OK, Roger Mills County, OK, Texas County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Carson County, TX, Dallam County, TX, Gray County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Roberts County, TX, Sherman County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 154 km from the middle of the area, began a volume at 02:49 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 2.8 hours before the alert went out and 154 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
- 2234 J/kg
- Mixed-layer CIN
- -239 J/kg
- Mixed-layer LCL
- 1484 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 344 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 7:06 PM CDT | Mesoscale Discussion | SPC | Clark, Finney, Ford, Grant, Gray, Haskell and 8 more | 84 min |
| Jun 24, 7:51 PM CDT | Mesoscale Discussion | SPC | Ellis, Jewell, Osborne, Phillips, Rooks, Smith | 84 min |
| Jun 24, 8:50 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Ford, Hodgeman, Meade | 7 hr |
| Jun 24, 10:08 PM CDT | Severe Thunderstorm Watch | SPC | Barber, Comanche, Kiowa, Pratt | 6 hr |
| Jun 24, 11:53 PM CDT | Mesoscale Discussion | SPC | Barber, Harper, Kingman, Sedgwick, Sumner | 67 min |
| Jun 25, 12:31 AM CDT | Severe Thunderstorm Watch | SPC | Chautauqua, Cowley, Elk, Harper, Montgomery, Sumner | 5 hr |
| Jun 25, 3:34 AM CDT | Mesoscale Discussion | SPC | Chautauqua, Cherokee, Elk, Labette, Montgomery, Wilson | 86 min |
| Jun 24, 7:48 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Marion, Morris, Red River and 1 more | 117 min |
Nearby
Mesoscale Discussions in Texas, 2018Mesoscale Discussions in Oklahoma, 2018Mesoscale Discussions in Kansas, 2018Every mesoscale discussion in 2018
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.