Alert archive / Texas / Mesoscale Discussions in 2018
Mesoscale Discussion 191
The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2018, 5:48 PM CDT for 8 parishes in Louisiana; 16 counties in Texas. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2018, 5:48 PM CDT (22:48 UTC)
- Expired
- Mar 28, 2018, 7:15 PM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 24 counties
Allen Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Evangeline Parish, LA, Grant Parish, LA, LaSalle Parish, LA, Rapides Parish, LA, Vernon Parish, LA, Austin County, TX, Brazoria County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Hardin County, TX, Harris County, TX, Jackson County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Montgomery County, TX, Newton County, TX, Orange County, TX, Waller County, TX, Wharton County, TX
The radar
The Lake Charles radar (KLCH), 109 km from the middle of the area, began a volume at 22:51 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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.8 hours before the alert went out and 110 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
- 295 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 650 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.6
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 28, 11:38 AM CDT | Mesoscale Discussion | SPC | Beauregard, Caldwell, Franklin, Grant, Jackson, LaSalle and 7 more | 67 min |
| Mar 28, 12:03 PM CDT | Tornado Watch | SPC | Allen, Avoyelles, Beauregard, Bienville, Calcasieu, Caldwell and 12 more | 9 hr |
| Mar 28, 2:43 PM CDT | Mesoscale Discussion | SPC | East Carroll, Franklin, Madison, Morehouse, Richland, Tensas and 1 more | 92 min |
| Mar 28, 3:07 PM CDT | Mesoscale Discussion | SPC | Allen, Beauregard, Caldwell, Grant, Jackson, LaSalle and 4 more | 113 min |
| Mar 28, 3:27 PM CDT | Tornado Watch | SPC | Catahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more | 8 hr |
| Mar 28, 5:32 PM CDT | Mesoscale Discussion | SPC | Madison, Tensas | 118 min |
| Mar 27, 9:23 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Caldwell, Comal and 20 more | 97 min |
| Mar 27, 9:51 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bastrop, Bexar, Caldwell, DeWitt, Dimmit and 15 more | 5 hr |
| Mar 27, 11:58 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bastrop, Bexar, Caldwell, Comal, DeWitt and 17 more | 2 hr |
| Mar 28, 5:05 AM CDT | Mesoscale Discussion | SPC | Bastrop, Brazos, Burleson, Fayette, Grimes, Lee and 1 more | 85 min |
| Mar 28, 9:09 AM CDT | Mesoscale Discussion | SPC | Atascosa, Bexar, Frio, Medina, Wilson | 2 hr |
| Mar 28, 6:53 PM CDT | Mesoscale Discussion | SPC | Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 6 more | 97 min |
Nearby
Mesoscale Discussions in Texas, 2018Mesoscale Discussions in Louisiana, 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.