Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 520

May 3, 201916 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 3, 2019, 5:58 PM CDT for 16 counties in Texas. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: May 3, 2019, 5:58 PM CDT (22:58 UTC)
Expired: May 3, 2019, 7:30 PM CDT
In force: 92 min
Issued by: the Storm Prediction Center

Counties Andrews County, TX, Bailey County, TX, Cochran County, TX, Crane County, TX, Dawson County, TX, Ector County, TX, Gaines County, TX, Hockley County, TX, Lamb County, TX, Martin County, TX, Midland County, TX, Pecos County, TX, Terry County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX

The radar

The Midland/Odessa radar (KMAF), 53 km from the middle of the area, began a volume at 23:01 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 12:00Z, 11.0 hours before the alert went out and 52 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: 249 J/kg
Mixed-layer CIN: -360 J/kg
Mixed-layer LCL: 944 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 102 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
May 2, 10:26 PM CDT	Mesoscale Discussion	SPC	Brewster, Dimmit, Kinney, Maverick, Terrell, Val Verde and 2 more	2 hr
May 3, 5:45 AM CDT	Mesoscale Discussion	SPC	Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Kleberg and 3 more	60 min
May 3, 6:13 AM CDT	Severe Thunderstorm Watch	SPC	Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 8 more	5 hr
May 3, 7:39 AM CDT	Mesoscale Discussion	SPC	Colorado, DeWitt, Fayette, Lavaca	66 min
May 3, 9:59 AM CDT	Mesoscale Discussion	SPC	Brooks, Cameron, Duval, Hidalgo, Jim Wells, Kenedy and 4 more	16 min
May 3, 12:20 PM CDT	Mesoscale Discussion	SPC	Fort Bend, Harris, Waller	2 hr
May 3, 1:26 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Brewster, Cochran, Crane, Dawson and 15 more	3 hr
May 3, 3:26 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Bailey, Borden, Brewster, Castro, Cochran and 25 more	6 hr
May 3, 4:23 PM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 16 more	67 min
May 3, 4:35 PM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 31 more	6 hr
May 3, 6:48 PM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bastrop, Bexar, Blanco, Caldwell and 16 more	57 min

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.