Alert archive / Texas / Mesoscale Discussions in 2015

Mesoscale Discussion 1845

October 7, 20156 counties in New Mexico; 8 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Oct 7, 2015, 4:40 PM MDT for 6 counties in New Mexico; 8 counties in Texas. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Oct 7, 2015, 4:40 PM MDT (22:40 UTC)
Expired: Oct 7, 2015, 6:15 PM MDT
In force: 95 min
Issued by: the Storm Prediction Center

Counties Chaves County, NM, Doña Ana County, NM, Eddy County, NM, Lea County, NM, Otero County, NM, Roosevelt County, NM, Brewster County, TX, Culberson County, TX, El Paso County, TX, Hudspeth County, TX, Jeff Davis County, TX, Loving County, TX, Presidio County, TX, Reeves County, TX

The radar

The Midland/Odessa radar (KMAF), 206 km from the middle of the area, began a volume at 22:43 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, 10.7 hours before the alert went out and 205 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: 1577 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: -50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 7, 11:59 AM MDT	Mesoscale Discussion	SPC	Chaves, Doña Ana, Eddy, Lea, Lincoln, Otero	3 hr
Oct 7, 1:41 PM MDT	Severe Thunderstorm Watch	SPC	Doña Ana, Eddy, Otero, Sierra	6 hr

Nearby

Mesoscale Discussions in Texas, 2015 Mesoscale Discussions in New Mexico, 2015 Every mesoscale discussion in 2015

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.