Alert archive / Texas / Mesoscale Discussions in 2022
Mesoscale Discussion 302
The Storm Prediction Center issued this mesoscale discussion at Mar 21, 2022, 10:51 PM CDT for 5 counties in Arkansas; Bossier Parish, Caddo Parish, Louisiana; 16 counties in Texas. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Mar 21, 2022, 10:51 PM CDT (03:51 UTC)
- Expired
- Mar 22, 2022, 12:45 AM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado watch 56
All 23 counties
Hempstead County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Bossier Parish, LA, Caddo Parish, LA, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Gregg County, TX, Harrison County, TX, Houston County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Rusk County, TX, San Augustine County, TX, Shelby County, TX, Upshur County, TX
The radar
The Shreveport radar (KSHV), 48 km from the middle of the area, began a volume at 03:56 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
Shreveport, LA (KSHV), launched 00:00Z, 3.9 hours before the alert went out and 55 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
- 7 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 833 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 438 m²/s²
- 0-3 km storm-relative helicity
- 723 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
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 21, 8:09 PM CDT | Tornado Watch | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 2 more | 6 hr |
| Mar 21, 9:07 PM CDT | Mesoscale Discussion | SPC | Dallas, Garland, Grant, Hot Spring, Logan, Montgomery and 6 more | 53 min |
| Mar 21, 9:38 PM CDT | Severe Thunderstorm Watch | SPC | Bradley, Calhoun, Clark, Cleveland, Dallas, Garland and 7 more | 6 hr |
| Mar 21, 11:02 PM CDT | Mesoscale Discussion | SPC | Bradley, Calhoun, Clark, Cleveland, Dallas, Garland and 7 more | 118 min |
| Mar 22, 1:58 AM CDT | Tornado Watch | SPC | Columbia, Union | 5 hr |
| Mar 21, 7:03 PM CDT | Mesoscale Discussion | SPC | Bossier, Caddo, De Soto | 57 min |
| Mar 22, 1:08 AM CDT | Mesoscale Discussion | SPC | Bossier, Caddo, De Soto, Webster | 97 min |
| Mar 22, 4:00 AM CDT | Mesoscale Discussion | SPC | Bienville, Claiborne, De Soto, Jackson, Lincoln, Natchitoches and 3 more | 2 hr |
| Mar 22, 6:15 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 20 more | 90 min |
| Mar 22, 7:08 AM CDT | Tornado Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 19 more | 8 hr |
| Mar 22, 9:43 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Cameron, Concordia, East Baton Rouge and 14 more | 2 hr |
| Mar 22, 10:40 AM CDT | Tornado Watch | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 19 more | 8 hr |
| Mar 22, 12:19 PM CDT | Mesoscale Discussion | SPC | Saint Helena, Tangipahoa, Washington | 116 min |
| Mar 22, 3:05 PM CDT | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, Livingston, Orleans, Saint Charles and 6 more | 115 min |
| Mar 22, 5:33 PM CDT | Mesoscale Discussion | SPC | Ascension, Assumption, Livingston, Orleans, Saint Helena, Saint James and 4 more | 87 min |
| Mar 21, 7:24 PM CDT | Mesoscale Discussion | SPC | Anderson, Bastrop, Bell, Brazos, Burleson, Caldwell and 32 more | 96 min |
| Mar 21, 9:12 PM CDT | Mesoscale Discussion | SPC | Anderson, Brazos, Cherokee, Freestone, Henderson, Houston and 8 more | 93 min |
| Mar 21, 10:10 PM CDT | Mesoscale Discussion | SPC | Bee, Duval, Jim Wells, Live Oak, McMullen, Refugio and 2 more | 95 min |
| Mar 22, 12:38 AM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Brazos, Burleson, Caldwell, Colorado and 27 more | 67 min |
| Mar 22, 12:59 AM CDT | Tornado Watch | SPC | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 20 more | 8 hr |
Nearby
Mesoscale Discussions in Texas, 2022Mesoscale Discussions in Arkansas, 2022Mesoscale Discussions in Louisiana, 2022Every mesoscale discussion in 2022
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.