Alert archive / Texas / Mesoscale Discussions in 2018
Mesoscale Discussion 279
The Storm Prediction Center issued this mesoscale discussion at Apr 20, 2018, 2:46 PM MDT for Curry County, Lea County, Roosevelt County, New Mexico; 11 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 20, 2018, 2:46 PM MDT (20:46 UTC)
- Expired
- Apr 20, 2018, 5:15 PM MDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
Counties Curry County, NM, Lea County, NM, Roosevelt County, NM, Andrews County, TX, Bailey County, TX, Cochran County, TX, Crane County, TX, Ector County, TX, Gaines County, TX, Loving County, TX, Parmer County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX
The radar
The Lubbock radar (KLBB), 146 km from the middle of the area, began a volume at 20:48 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, 8.8 hours before the alert went out and 272 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1744 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 318 m²/s²
- 0-3 km storm-relative helicity
- 425 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 |
|---|---|---|---|---|
| Apr 19, 6:27 PM MDT | Mesoscale Discussion | SPC | Doña Ana | 3 hr |
Nearby
Mesoscale Discussions in Texas, 2018Mesoscale Discussions in New Mexico, 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.