Alert archive / Texas / Mesoscale Discussions in 2024

Mesoscale Discussion 556

April 27, 202416 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2024, 11:21 PM CDT for 16 counties in Texas. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: Apr 27, 2024, 11:21 PM CDT (04:21 UTC)
Expired: Apr 28, 2024, 1:15 AM CDT
In force: 114 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 153

Counties Coke County, TX, Crockett County, TX, Glasscock County, TX, Howard County, TX, Irion County, TX, Mitchell County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Tom Green County, TX, Val Verde County, TX

The radar

The San Angelo radar (KSJT), 89 km from the middle of the area, began a volume at 04:21 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

Midland Regional, TX (KMAF), launched 00:00Z, 4.4 hours before the alert went out and 141 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 4013 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 27, 7:30 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Foard, Hardeman, Haskell and 7 more	60 min
Apr 27, 7:50 PM CDT	Tornado Watch	SPC	Archer, Baylor, Clay, Cooke, Eastland, Fisher and 19 more	7 hr
Apr 27, 9:23 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Callahan, Coke, Coleman, Concho, Crockett and 27 more	8 hr
Apr 28, 12:32 AM CDT	Mesoscale Discussion	SPC	Collin, Comanche, Dallas, Delta, Denton, Ellis and 14 more	88 min
Apr 28, 1:00 AM CDT	Tornado Watch	SPC	Bosque, Collin, Comanche, Coryell, Dallas, Delta and 20 more	6 hr
Apr 28, 4:11 AM CDT	Mesoscale Discussion	SPC	Bosque, Collin, Coryell, Dallas, Delta, Ellis and 21 more	64 min
Apr 28, 9:46 AM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Brazos, Burleson, Freestone, Grimes and 10 more	89 min
Apr 28, 1:28 PM CDT	Mesoscale Discussion	SPC	Anderson, Bell, Brazos, Burleson, Cherokee, Falls and 10 more	2 hr
Apr 28, 2:25 PM CDT	Tornado Watch	SPC	Anderson, Angelina, Austin, Bastrop, Brazos, Burleson and 38 more	11 hr
Apr 28, 3:38 PM CDT	Mesoscale Discussion	SPC	Lamar, Red River	2 hr
Apr 28, 3:47 PM CDT	Mesoscale Discussion	SPC	Anderson, Brazos, Burleson, Cherokee, Houston, Leon and 3 more	58 min
Apr 28, 6:13 PM CDT	Mesoscale Discussion	SPC	Angelina, Cherokee, Harrison, Houston, Marion, Nacogdoches and 6 more	62 min
Apr 28, 6:42 PM CDT	Tornado Watch	SPC	Jasper, Newton, Tyler	8 hr

Nearby

Mesoscale Discussions in Texas, 2024 Every mesoscale discussion in 2024

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.