Alert archive / Texas / Mesoscale Discussions in 2018

Mesoscale Discussion 507

May 23, 20185 counties in New Mexico; 23 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 23, 2018, 7:42 PM MDT for 5 counties in New Mexico; 23 counties in Texas. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: May 23, 2018, 7:42 PM MDT (01:42 UTC)
Expired: May 23, 2018, 8:45 PM MDT
In force: 63 min
Issued by: the Storm Prediction Center

All 28 counties

Curry County, NM, Lea County, NM, Quay County, NM, Roosevelt County, NM, Union County, NM, Andrews County, TX, Bailey County, TX, Brewster County, TX, Cochran County, TX, Crane County, TX, Dallam County, TX, Deaf Smith County, TX, Ector County, TX, Gaines County, TX, Hartley County, TX, Hockley County, TX, Jeff Davis County, TX, Lamb County, TX, Loving County, TX, Oldham County, TX, Parmer County, TX, Pecos County, TX, Presidio County, TX, Reeves County, TX, Terry County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX

The radar

The Midland/Odessa radar (KMAF), 138 km from the middle of the area, began a volume at 01:46 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, 1.7 hours before the alert went out and 137 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: 516 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 2217 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -67 m²/s²
0-3 km storm-relative helicity: -17 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 24, 1:43 PM MDT	Mesoscale Discussion	SPC	Chaves, Eddy, Lincoln	2 hr
May 24, 5:06 PM MDT	Mesoscale Discussion	SPC	Culberson, Jeff Davis, Reeves	114 min

Nearby

Mesoscale Discussions in Texas, 2018 Mesoscale Discussions in New Mexico, 2018 Every mesoscale discussion in 2018

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.