Alert archive / Texas / Mesoscale Discussions in 2023

Mesoscale Discussion 608

April 23, 20235 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2023, 12:54 PM CDT for 5 counties in Texas. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: Apr 23, 2023, 12:54 PM CDT (17:54 UTC)
Expired: Apr 23, 2023, 2:00 PM CDT
In force: 66 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 164

Counties Cameron County, TX, Hidalgo County, TX, Kenedy County, TX, Starr County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 80 km from the middle of the area, began a volume at 17:54 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 5.9 hours before the alert went out and 83 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: 2723 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 291 m²/s²
Significant tornado parameter: 3.5
Supercell composite: 13.2

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 22, 7:46 PM CDT	Mesoscale Discussion	SPC	Blanco, Brown, Burnet, Coke, Coleman, Concho and 17 more	89 min
Apr 22, 9:16 PM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bexar, Comal, Dimmit, Edwards and 12 more	89 min
Apr 22, 9:47 PM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Bandera, Bexar, Blanco, Caldwell, Comal and 21 more	7 hr
Apr 22, 11:34 PM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bexar, Comal, Edwards, Frio and 10 more	86 min
Apr 23, 3:13 AM CDT	Mesoscale Discussion	SPC	Aransas, Atascosa, Bandera, Bee, Bexar, Brooks and 26 more	2 hr
Apr 23, 4:54 AM CDT	Severe Thunderstorm Watch	SPC	Aransas, Atascosa, Bee, Bexar, Brooks, Calhoun and 28 more	9 hr
Apr 23, 9:59 AM CDT	Mesoscale Discussion	SPC	Bee, Brooks, Cameron, Duval, Hidalgo, Jim Hogg and 13 more	91 min

Nearby

Mesoscale Discussions in Texas, 2023 Every mesoscale discussion in 2023

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.