Alert archive / Texas / Mesoscale Discussions in 2015
Mesoscale Discussion 479
The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2015, 5:25 AM CDT for Brooks County, Kenedy County, Texas. It was in force for 95 min.
The area
The outline as issued.
The facts
- Issued
- Apr 27, 2015, 5:25 AM CDT (10:25 UTC)
- Expired
- Apr 27, 2015, 7:00 AM CDT
- In force
- 95 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
Counties Brooks County, TX, Kenedy County, TX
The radar
The Corpus Christi radar (KCRP), 93 km from the middle of the area, began a volume at 10:24 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 00:00Z, 10.4 hours before the alert went out and 100 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
- 3577 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 627 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 3.5
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 |
|---|---|---|---|---|
| Apr 26, 7:10 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Carson, Childress, Clay, Collingsworth and 14 more | 65 min |
| Apr 26, 7:59 PM CDT | Severe Thunderstorm Watch | SPC | Bandera, Bexar, Blanco, Brown, Burnet, Coleman and 24 more | 6 hr |
| Apr 26, 9:29 PM CDT | Mesoscale Discussion | SPC | Dallas, Ellis, Hood, Hunt, Johnson, Kaufman and 4 more | 91 min |
| Apr 26, 10:45 PM CDT | Tornado Watch | SPC | Anderson, Bell, Bosque, Comanche, Coryell, Ellis and 19 more | 5 hr |
| Apr 27, 12:49 AM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Atascosa, Austin, Bastrop, Bexar and 49 more | 86 min |
| Apr 27, 1:27 AM CDT | Tornado Watch | SPC | Angelina, Atascosa, Austin, Bastrop, Bee, Brazos and 50 more | 6 hr |
| Apr 27, 3:42 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Cooke, Denton, Foard and 12 more | 93 min |
| Apr 27, 4:56 AM CDT | Mesoscale Discussion | SPC | Angelina, Chambers, Hardin, Harris, Jasper, Jefferson and 13 more | 2 hr |
| Apr 27, 6:01 AM CDT | Tornado Watch | SPC | Jefferson, Orange | 7 hr |
| Apr 27, 1:08 PM CDT | Mesoscale Discussion | SPC | Angelina, Chambers, Hardin, Jasper, Jefferson, Liberty and 9 more | 97 min |
| Apr 27, 3:29 PM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Bell, Bosque, Brazos, Burleson and 22 more | 91 min |
Nearby
Mesoscale Discussions in Texas, 2015Every mesoscale discussion in 2015
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.