Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 6
The Storm Prediction Center issued this mesoscale discussion at Jan 2, 2017, 5:35 AM CST for 24 parishes in Louisiana; 62 counties in Texas. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Jan 2, 2017, 5:35 AM CST (11:35 UTC)
- Expired
- Jan 2, 2017, 7:00 AM CST
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 86 counties
Acadia Parish, LA, Allen Parish, LA, Beauregard Parish, LA, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Cameron Parish, LA, De Soto Parish, LA, Evangeline Parish, LA, Grant Parish, LA, Jackson Parish, LA, Jefferson Davis Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Sabine Parish, LA, Vernon Parish, LA, Webster Parish, LA, Winn Parish, LA, Anderson County, TX, Angelina County, TX, Austin County, TX, Brazos County, TX, Burleson County, TX, Camp County, TX, Chambers County, TX, Cherokee County, TX, Collin County, TX, Colorado County, TX, Dallas County, TX, Ellis County, TX, Falls County, TX, Fayette County, TX, Fort Bend County, TX, Franklin County, TX, Freestone County, TX, Galveston County, TX, Gregg County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Jasper County, TX, Jefferson County, TX, Kaufman County, TX, Lee County, TX, Leon County, TX, Liberty County, TX, Limestone County, TX, Madison County, TX, Marion County, TX, Milam County, TX, Montgomery County, TX, Nacogdoches County, TX, Navarro County, TX, Newton County, TX, Orange County, TX, Panola County, TX, Polk County, TX, Rains County, TX, Robertson County, TX, Rockwall County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Van Zandt County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX, Wood County, TX
The radar
The Houston radar (KHGX), 172 km from the middle of the area, began a volume at 11:36 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
Lake Charles Mun, LA (KLCH), launched 00:00Z, 11.6 hours before the alert went out and 192 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
- 1365 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.1
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 |
|---|---|---|---|---|
| Jan 2, 2:06 AM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Bienville, Calcasieu and 23 more | 114 min |
| Jan 2, 6:12 AM CST | Tornado Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Bienville, Bossier and 27 more | 10 hr |
| Jan 2, 7:48 AM CST | Mesoscale Discussion | SPC | Acadia, Allen, Beauregard, Bienville, Bossier, Caddo and 19 more | 57 min |
| Jan 2, 10:17 AM CST | Mesoscale Discussion | SPC | Ascension, Concordia, East Baton Rouge, East Feliciana, Livingston, Orleans and 10 more | 118 min |
| Jan 2, 11:09 AM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Caldwell, Cameron, Evangeline and 12 more | 96 min |
| Jan 2, 11:22 AM CST | Tornado Watch | SPC | Ascension, Assumption, Catahoula, Concordia, East Baton Rouge, East Feliciana and 21 more | 9 hr |
| Jan 2, 2:03 PM CST | Mesoscale Discussion | SPC | Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 6 more | 117 min |
| Jan 1, 10:11 PM CST | Mesoscale Discussion | SPC | Archer, Baylor, Bosque, Brown, Callahan, Coleman and 35 more | 3 hr |
| Jan 2, 1:04 AM CST | Mesoscale Discussion | SPC | Anderson, Austin, Bandera, Bastrop, Bell, Bexar and 71 more | 86 min |
| Jan 2, 1:39 AM CST | Severe Thunderstorm Watch | SPC | Anderson, Austin, Bastrop, Bell, Blanco, Bosque and 67 more | 59 days |
| Jan 2, 3:36 AM CST | Mesoscale Discussion | SPC | Anderson, Bastrop, Bell, Blanco, Bosque, Brazos and 44 more | 54 min |
Nearby
Mesoscale Discussions in Texas, 2017Mesoscale Discussions in Louisiana, 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.