Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 436

April 24, 201915 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 24, 2019, 5:23 PM CDT for 15 counties in Texas. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued: Apr 24, 2019, 5:23 PM CDT (22:23 UTC)
Expired: Apr 24, 2019, 6:30 PM CDT
In force: 67 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Aransas County, TX, Bee County, TX, Calhoun County, TX, Duval County, TX, Goliad County, TX, Jackson County, TX, Jim Hogg County, TX, Jim Wells County, TX, Kleberg County, TX, Live Oak County, TX, Matagorda County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Victoria County, TX

The radar

The Corpus Christi radar (KCRP), 43 km from the middle of the area, began a volume at 22:24 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 12:00Z, 10.4 hours before the alert went out and 55 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1393 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 600 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 7:58 PM CDT	Mesoscale Discussion	SPC	Brewster, Culberson, Jeff Davis, Loving, Presidio, Reeves and 2 more	47 min
Apr 23, 8:35 PM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coke, Coleman, Comanche, Crane and 23 more	55 min
Apr 23, 10:06 PM CDT	Mesoscale Discussion	SPC	Bandera, Blanco, Bosque, Brewster, Brown, Burnet and 49 more	54 min
Apr 23, 10:42 PM CDT	Severe Thunderstorm Watch	SPC	Bosque, Brewster, Brown, Coleman, Collin, Comanche and 32 more	6 hr
Apr 23, 11:50 PM CDT	Mesoscale Discussion	SPC	Irion, Reagan, Tom Green	85 min
Apr 24, 2:16 AM CDT	Mesoscale Discussion	SPC	Bosque, Brewster, Brown, Callahan, Coke, Coleman and 27 more	89 min
Apr 24, 10:11 AM CDT	Mesoscale Discussion	SPC	Atascosa, Austin, Bandera, Bastrop, Bee, Bell and 60 more	2 hr
Apr 24, 11:51 AM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 25 more	7 hr
Apr 24, 2:31 PM CDT	Mesoscale Discussion	SPC	Atascosa, Austin, Bandera, Bastrop, Bee, Bell and 39 more	89 min
Apr 24, 3:47 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Bastrop, Brazos, Burleson, Cherokee and 19 more	43 min
Apr 24, 4:49 PM CDT	Severe Thunderstorm Watch	SPC	Austin, Brazos, Burleson, Colorado, Grimes, Houston and 10 more	5 hr

Nearby

Mesoscale Discussions in Texas, 2019 Every mesoscale discussion in 2019

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.