Alert archive / New Mexico / Mesoscale Discussions in 2016

Mesoscale Discussion 1705

September 17, 2016Chaves County, Eddy County, Lea County, New Mexico

The Storm Prediction Center issued this mesoscale discussion at Sep 17, 2016, 1:33 PM MDT for Chaves County, Eddy County, Lea County, New Mexico. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Sep 17, 2016, 1:33 PM MDT (19:33 UTC)
Expired: Sep 17, 2016, 2:30 PM MDT
In force: 57 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Chaves County, NM, Eddy County, NM, Lea County, NM

The radar

The Holloman AFB radar (KHDX), 162 km from the middle of the area, began a volume at 19:35 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.

Severe Thunderstorm Watch 480Sep 17, 2:00 PM MDT

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 7.6 hours before the alert went out and 234 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: 1130 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 957 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

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
Sep 17, 1:38 PM MDT	Mesoscale Discussion	SPC	Harding, Union	2 hr
Sep 17, 2:02 PM MDT	Severe Thunderstorm Watch	SPC	Chaves, Eddy, Lea, Lincoln	7 hr
Sep 17, 2:19 PM MDT	Severe Thunderstorm Watch	SPC	Colfax, Harding, Mora, Quay, San Miguel, Union	10 hr
Sep 17, 4:33 PM MDT	Mesoscale Discussion	SPC	Harding, Quay, San Miguel, Union	117 min
Sep 17, 4:56 PM MDT	Mesoscale Discussion	SPC	Chaves, Eddy, Lea, Roosevelt	2 hr

Nearby

Mesoscale Discussions in New Mexico, 2016 Every mesoscale discussion in 2016

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.