Alert archive / Texas / Mesoscale Discussions in 2018
Mesoscale Discussion 204
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2018, 9:49 AM CDT for 46 counties in Texas. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2018, 9:49 AM CDT (14:49 UTC)
- Expired
- Apr 3, 2018, 11:45 AM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 46 counties
Anderson County, TX, Angelina County, TX, Bell County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Coryell County, TX, Falls County, TX, Freestone County, TX, Gregg County, TX, Grimes County, TX, Harrison County, TX, Henderson County, TX, Hill County, TX, Houston County, TX, Lampasas County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, Marion County, TX, McLennan County, TX, Milam County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Polk County, TX, Robertson County, TX, Rusk 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, Washington County, TX, Williamson County, TX, Wood County, TX
The radar
The Ft Hood radar (KGRK), 146 km from the middle of the area, began a volume at 14:32 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
Fort Worth, TX (KFWD), launched 12:00Z, 2.8 hours before the alert went out and 202 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
- 1112 J/kg
- Mixed-layer CIN
- -284 J/kg
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 448 m²/s²
- 0-3 km storm-relative helicity
- 477 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 3, 10:26 AM CDT | Severe Thunderstorm Watch | SPC | Anderson, Angelina, Bell, Bosque, Bowie, Brazos and 55 more | 8 hr |
| Apr 3, 1:55 PM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Bosque, Bowie, Burnet, Camp and 47 more | 95 min |
| Apr 3, 5:19 PM CDT | Mesoscale Discussion | SPC | Angelina, Austin, Bastrop, Bell, Bexar, Blanco and 42 more | 86 min |
| Apr 3, 5:51 PM CDT | Severe Thunderstorm Watch | SPC | Austin, Bastrop, Bexar, Blanco, Brazos, Burleson and 34 more | 6 hr |
Nearby
Mesoscale Discussions in Texas, 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.