Alert archive / New Mexico / Mesoscale Discussions in 2016

Mesoscale Discussion 1689

September 15, 20164 counties in New Mexico; Culberson County, Reeves County, Texas

The Storm Prediction Center issued this mesoscale discussion at Sep 15, 2016, 12:03 PM MDT for 4 counties in New Mexico; Culberson County, Reeves County, Texas. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Sep 15, 2016, 12:03 PM MDT (18:03 UTC)
Expired: Sep 15, 2016, 1:00 PM MDT
In force: 57 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties De Baca County, NM, Guadalupe County, NM, Lincoln County, NM, Torrance County, NM, Culberson County, TX, Reeves County, TX

The radar

The Holloman AFB radar (KHDX), 136 km from the middle of the area, began a volume at 18:04 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 475Sep 15, 12:45 PM MDT

The nearest sounding before it

Santa Teresa, NM (KEPZ), launched 12:00Z, 6.1 hours before the alert went out and 225 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: 882 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 1781 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 159 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 15, 1:02 AM MDT	Mesoscale Discussion	SPC	Curry, Harding, Quay, Roosevelt, Union	58 min
Sep 15, 12:42 PM MDT	Severe Thunderstorm Watch	SPC	Chaves, Curry, De Baca, Eddy, Guadalupe, Lea and 4 more	7 hr
Sep 15, 3:58 PM MDT	Mesoscale Discussion	SPC	Chaves, Curry, De Baca, Doña Ana, Eddy, Lea and 5 more	92 min
Sep 15, 4:39 PM MDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Cottle, Eastland, Foard and 14 more	96 min

Nearby

Mesoscale Discussions in New Mexico, 2016 Mesoscale Discussions in Texas, 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.