Alert archive / Texas / Mesoscale Discussions in 2017

Mesoscale Discussion 675

May 9, 20178 counties in New Mexico; 16 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 9, 2017, 7:41 PM MDT for 8 counties in New Mexico; 16 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 9, 2017, 7:41 PM MDT (01:41 UTC)
Expired
May 9, 2017, 9:45 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 24 counties

Chaves County, NM, Curry County, NM, De Baca County, NM, Eddy County, NM, Harding County, NM, Lea County, NM, Quay County, NM, Roosevelt County, NM, Andrews County, TX, Bailey County, TX, Castro County, TX, Cochran County, TX, Deaf Smith County, TX, Ector County, TX, Gaines County, TX, Hockley County, TX, Lamb County, TX, Loving County, TX, Oldham County, TX, Parmer County, TX, Terry County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX

The radar

The Cannon AFB radar (KFDX), 51 km from the middle of the area, began a volume at 01:41 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.7 hours before the alert went out and 181 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-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2017-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 591 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2017-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
591 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
1404 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
70 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.

IssuedProductOfficeCountiesLasted
May 9, 9:17 PM MDTMesoscale DiscussionSPCCurry, Lea, Roosevelt28 min
May 9, 9:59 PM MDTSevere Thunderstorm WatchSPCChaves, Curry, Eddy, Lea, Roosevelt8 hr
May 10, 1:04 AM MDTMesoscale DiscussionSPCLea, Roosevelt86 min
May 10, 1:04 PM MDTMesoscale DiscussionSPCColfax, Taos, Union2 hr
May 10, 5:04 AM MDTMesoscale DiscussionSPCCollingsworth, Hemphill, Lipscomb, Wheeler116 min
May 10, 1:14 PM MDTMesoscale DiscussionSPCBaylor, Briscoe, Childress, Collingsworth, Cottle, Donley and 10 more61 min
May 10, 1:25 PM MDTMesoscale DiscussionSPCMenard, Schleicher, Sutton, Val Verde3 hr
May 10, 1:43 PM MDTTornado WatchSPCArcher, Baylor, Briscoe, Childress, Cottle, Dickens and 13 more7 hr
May 10, 2:11 PM MDTMesoscale DiscussionSPCArmstrong, Carson, Collingsworth, Donley, Gray, Hansford and 10 more94 min
May 10, 4:27 PM MDTSevere Thunderstorm WatchSPCArmstrong, Carson, Collingsworth, Donley, Gray, Hansford and 7 more3 hr
May 10, 4:58 PM MDTMesoscale DiscussionSPCArcher, Baylor, Collingsworth, Donley, Foard, Hardeman and 3 more2 hr

Nearby

Mesoscale Discussions in Texas, 2017Mesoscale Discussions in New Mexico, 2017Every mesoscale discussion in 2017

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.