Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 390

April 15, 20164 states

The Storm Prediction Center issued this mesoscale discussion at Apr 15, 2016, 5:51 PM MDT for 4 states. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: Apr 15, 2016, 5:51 PM MDT (23:51 UTC)
Expired: Apr 15, 2016, 7:45 PM MDT
In force: 114 min
Issued by: the Storm Prediction Center

Counties Baca County, CO, Prowers County, CO, Grant County, KS, Hamilton County, KS, Kearny County, KS, Morton County, KS, Stanton County, KS, Stevens County, KS, Cimarron County, OK, Texas County, OK, Dallam County, TX, Deaf Smith County, TX, Hansford County, TX, Hartley County, TX, Moore County, TX, Oldham County, TX, Potter County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 142 km from the middle of the area, began a volume at 23:52 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 92Apr 15, 8:50 PM MDT

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.9 hours before the alert went out and 143 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: 1416 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 195 m²/s²
0-3 km storm-relative helicity: 293 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
Apr 15, 1:07 PM MDT	Mesoscale Discussion	SPC	Cheyenne, Kit Carson, Phillips, Sedgwick, Yuma	53 min
Apr 15, 1:25 PM MDT	Mesoscale Discussion	SPC	Boulder, Clear Creek, Gilpin, Grand, Jackson, Larimer and 2 more	6 hr
Apr 15, 1:38 PM MDT	Mesoscale Discussion	SPC	Baca, Prowers	2 hr
Apr 15, 1:51 PM MDT	Severe Thunderstorm Watch	SPC	Cheyenne, Kit Carson, Phillips, Sedgwick, Yuma	7 hr
Apr 15, 1:57 PM MDT	Tornado Watch	SPC	Baca, Bent, Kiowa, Prowers	7 hr
Apr 15, 4:47 PM MDT	Mesoscale Discussion	SPC	Kit Carson, Yuma	88 min
Apr 15, 4:13 PM MDT	Mesoscale Discussion	SPC	Andrews, Bailey, Briscoe, Cochran, Floyd, Gaines and 7 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2016 Mesoscale Discussions in Kansas, 2016 Mesoscale Discussions in Colorado, 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.