Alert archive / Texas / Mesoscale Discussions in 2008
Mesoscale Discussion 461
The Storm Prediction Center issued this mesoscale discussion at Mar 18, 2008, 1:19 PM CDT for 43 counties in Texas. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Mar 18, 2008, 1:19 PM CDT (18:19 UTC)
- Expired
- Mar 18, 2008, 3:15 PM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 43 counties
Anderson County, TX, Austin County, TX, Bastrop County, TX, Bell County, TX, Brazos County, TX, Burleson County, TX, Caldwell County, TX, Cherokee County, TX, Colorado County, TX, Coryell County, TX, DeWitt County, TX, Falls County, TX, Fayette County, TX, Fort Bend County, TX, Freestone County, TX, Gonzales County, TX, Gregg County, TX, Grimes County, TX, Harris County, TX, Houston County, TX, Jackson County, TX, Lavaca County, TX, Lee County, TX, Leon County, TX, Liberty County, TX, Limestone County, TX, Madison County, TX, McLennan County, TX, Milam County, TX, Montgomery County, TX, Polk County, TX, Robertson County, TX, Rusk County, TX, San Jacinto County, TX, Smith County, TX, Travis County, TX, Trinity County, TX, Victoria County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 104 km from the middle of the area, began a volume at 18:20 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
Corpus Christi, TX (KCRP), launched 12:00Z, 6.3 hours before the alert went out and 256 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
- 1542 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 538 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 404 m²/s²
- 0-3 km storm-relative helicity
- 500 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.2
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 7:09 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Clay, Wichita, Wilbarger | 7 hr |
| Mar 17, 9:17 PM CDT | Mesoscale Discussion | SPC | Bandera, Blanco, Bosque, Brown, Burnet, Callahan and 53 more | 58 min |
| Mar 17, 10:21 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Wichita, Wilbarger | 54 min |
| Mar 17, 11:06 PM CDT | Mesoscale Discussion | SPC | Bandera, Blanco, Bosque, Brown, Burnet, Callahan and 53 more | 54 min |
| Mar 18, 1:13 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Foard, Haskell, Jack and 8 more | 62 min |
| Mar 18, 1:32 AM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coke, Coleman, Concho, Crockett and 9 more | 58 min |
| Mar 18, 1:43 AM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coke, Coleman, Concho, Crockett and 9 more | 32 min |
| Mar 18, 1:52 AM CDT | Tornado Watch | SPC | Bandera, Blanco, Bosque, Brown, Burnet, Callahan and 34 more | 7 hr |
| Mar 18, 4:57 AM CDT | Mesoscale Discussion | SPC | Bandera, Blanco, Burnet, Coryell, Gillespie, Hamilton and 7 more | 93 min |
| Mar 18, 7:22 AM CDT | Mesoscale Discussion | SPC | Anderson, Austin, Bastrop, Bell, Brazoria, Brazos and 40 more | 113 min |
| Mar 18, 7:50 AM CDT | Mesoscale Discussion | SPC | Bandera, Bosque, Brown, Burnet, Coleman, Comanche and 19 more | 55 min |
| Mar 18, 9:26 AM CDT | Mesoscale Discussion | SPC | Anderson, Bowie, Camp, Cass, Cherokee, Delta and 25 more | 2 hr |
| Mar 18, 10:16 AM CDT | Tornado Watch | SPC | Bowie, Camp, Cass, Delta, Fannin, Franklin and 17 more | 7 hr |
| Mar 18, 10:59 AM CDT | Tornado Watch | SPC | Anderson, Angelina, Austin, Bastrop, Bell, Brazoria and 45 more | 8 hr |
| Mar 18, 12:10 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Delta, Fannin, Franklin and 13 more | 2 hr |
| Mar 18, 1:51 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Collin, Dallas, Delta, Ellis and 15 more | 3 hr |
| Mar 18, 3:54 PM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Bowie, Brazos, Burleson and 36 more | 2 hr |
| Mar 18, 5:19 PM CDT | Tornado Watch | SPC | Bowie, Camp, Cass, Franklin, Gregg, Harrison and 12 more | 11 hr |
| Mar 18, 6:19 PM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Chambers, Cherokee, Hardin, Harrison and 16 more | 56 min |
| Mar 18, 6:47 PM CDT | Tornado Watch | SPC | Anderson, Angelina, Chambers, Cherokee, Galveston, Hardin and 12 more | 9 hr |
Nearby
Mesoscale Discussions in Texas, 2008Every mesoscale discussion in 2008
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.