Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 717
The Storm Prediction Center issued this mesoscale discussion at May 15, 2017, 2:06 PM MDT for 4 states. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- May 15, 2017, 2:06 PM MDT (20:06 UTC)
- Expired
- May 15, 2017, 4:00 PM MDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 48 counties
Baca County, CO, Prowers County, CO, Finney County, KS, Gove County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Meade County, KS, Morton County, KS, Ness County, KS, Scott County, KS, Seward County, KS, Stanton County, KS, Stevens County, KS, Wichita County, KS, Beaver County, OK, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Dallam County, TX, Deaf Smith County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hale County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX
The radar
The Amarillo radar (KAMA), 147 km from the middle of the area, began a volume at 20:06 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 12:00Z, 8.1 hours before the alert went out and 147 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
- 428 J/kg
- Mixed-layer CIN
- -347 J/kg
- Mixed-layer LCL
- 1717 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| May 15, 2:44 PM MDT | Severe Thunderstorm Watch | SPC | Baca, Prowers | 7 hr |
| May 15, 4:58 PM MDT | Mesoscale Discussion | SPC | Jewell, Norton, Osborne, Phillips, Rooks, Smith | 2 hr |
| May 15, 5:53 PM MDT | Severe Thunderstorm Watch | SPC | Jewell, Osborne, Phillips, Rooks, Smith | 6 hr |
Nearby
Mesoscale Discussions in Texas, 2017Mesoscale Discussions in Kansas, 2017Mesoscale Discussions in Oklahoma, 2017Every mesoscale discussion in 2017
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.