Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 1654
The Storm Prediction Center issued this mesoscale discussion at Sep 17, 2017, 4:44 PM MDT for 4 states. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Sep 17, 2017, 4:44 PM MDT (22:44 UTC)
- Expired
- Sep 17, 2017, 6:15 PM MDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 46 counties
Baca County, CO, Bent County, CO, Crowley County, CO, Las Animas County, CO, Otero County, CO, Colfax County, NM, Curry County, NM, De Baca County, NM, Harding County, NM, Lea County, NM, Quay County, NM, Roosevelt County, NM, San Miguel County, NM, Union County, NM, Cimarron County, OK, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Cochran County, TX, Crosby County, TX, Dallam County, TX, Deaf Smith County, TX, Donley County, TX, Floyd County, TX, Gaines County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hartley County, TX, Hockley County, TX, Hutchinson County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Motley County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Sherman County, TX, Swisher County, TX, Terry County, TX, Yoakum County, TX
The radar
The Amarillo radar (KAMA), 123 km from the middle of the area, began a volume at 22:47 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 10.7 hours before the alert went out and 124 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
- 240 J/kg
- Mixed-layer CIN
- -249 J/kg
- Mixed-layer LCL
- 1391 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 115 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 |
|---|---|---|---|---|
| Sep 17, 2:41 PM MDT | Severe Thunderstorm Watch | SPC | Baca, Bent, Huerfano, Las Animas, Otero, Prowers and 1 more | 7 hr |
| Sep 17, 1:28 PM MDT | Mesoscale Discussion | SPC | Chaves, Colfax, Curry, De Baca, Guadalupe, Harding and 5 more | 2 hr |
| Sep 17, 1:16 PM MDT | Mesoscale Discussion | SPC | Atoka, Beckham, Caddo, Canadian, Carter, Cleveland and 32 more | 119 min |
Nearby
Mesoscale Discussions in Texas, 2017Mesoscale Discussions in New Mexico, 2017Mesoscale Discussions in Colorado, 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.