Alert archive / Texas / Mesoscale Discussions in 2019
Mesoscale Discussion 201
The Storm Prediction Center issued this mesoscale discussion at Mar 14, 2019, 4:07 AM CDT for 5 counties in Arkansas; 4 parishes in Louisiana; 18 counties in Texas. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Mar 14, 2019, 4:07 AM CDT (09:07 UTC)
- Expired
- Mar 14, 2019, 5:30 AM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 27 counties
Columbia County, AR, Hempstead County, AR, Lafayette County, AR, Miller County, AR, Nevada County, AR, Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Webster Parish, LA, Angelina County, TX, Brazos County, TX, Cass County, TX, Cherokee County, TX, Gregg County, TX, Grimes County, TX, Harrison County, TX, Houston County, TX, Leon County, TX, Madison County, TX, Marion County, TX, Nacogdoches County, TX, Panola County, TX, Polk County, TX, Rusk County, TX, Shelby County, TX, Trinity County, TX, Walker County, TX
The radar
The Shreveport radar (KSHV), 70 km from the middle of the area, began a volume at 09:06 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 nearest sounding before it
Shreveport, LA (KBAD), launched 00:00Z, 9.1 hours before the alert went out and 79 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
- 3 J/kg
- Mixed-layer CIN
- -323 J/kg
- Mixed-layer LCL
- 683 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 285 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
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 |
|---|---|---|---|---|
| Mar 13, 11:30 PM CDT | Mesoscale Discussion | SPC | Hempstead, Howard, Little River, Miller, Pike, Sevier | 3 hr |
| Mar 14, 1:59 AM CDT | Severe Thunderstorm Watch | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more | 5 hr |
| Mar 14, 4:47 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 19 more | 88 min |
| Mar 14, 5:28 AM CDT | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clay and 24 more | 7 hr |
| Mar 14, 7:14 AM CDT | Mesoscale Discussion | SPC | Arkansas, Chicot, Clay, Craighead, Crittenden, Cross and 12 more | 2 hr |
| Mar 14, 5:52 AM CDT | Mesoscale Discussion | SPC | Beauregard, Bienville, Caldwell, Grant, Jackson, LaSalle and 9 more | 53 min |
Nearby
Mesoscale Discussions in Texas, 2019Mesoscale Discussions in Arkansas, 2019Mesoscale Discussions in Louisiana, 2019Every mesoscale discussion in 2019
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.