Alert archive / Texas / Mesoscale Discussions in 2015

Mesoscale Discussion 659

May 16, 20155 states

The Storm Prediction Center issued this mesoscale discussion at May 16, 2015, 11:01 AM MDT for 5 states. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: May 16, 2015, 11:01 AM MDT (17:01 UTC)
Expired: May 16, 2015, 12:30 PM MDT
In force: 89 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

All 28 counties

Baca County, CO, Finney County, KS, Grant County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Morton County, KS, Seward County, KS, Stanton County, KS, Stevens County, KS, Curry County, NM, Harding County, NM, Quay County, NM, Union County, NM, Cimarron County, OK, Texas County, OK, Carson County, TX, Dallam County, TX, Deaf Smith County, TX, Hansford County, TX, Hartley County, TX, Hutchinson County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 143 km from the middle of the area, began a volume at 17:04 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.

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 5.0 hours before the alert went out and 277 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: 1786 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 57 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
May 15, 7:05 PM MDT	Mesoscale Discussion	SPC	Clark, Ford, Grant, Gray, Haskell, Meade and 4 more	2 hr
May 15, 11:43 PM MDT	Mesoscale Discussion	SPC	Barton, Clark, Edwards, Ellis, Ford, Graham and 15 more	92 min
May 16, 9:55 AM MDT	Mesoscale Discussion	SPC	Butler, Chautauqua, Cowley, Elk, Greenwood, Sumner	95 min
May 16, 12:15 PM MDT	Mesoscale Discussion	SPC	Decatur, Gove, Graham, Lane, Logan, Ness and 8 more	90 min
May 16, 1:41 PM MDT	Tornado Watch	SPC	Clark, Decatur, Finney, Ford, Gove, Graham and 24 more	5 hr
May 16, 2:04 PM MDT	Mesoscale Discussion	SPC	Butler, Cowley, Elk, Greenwood, Sedgwick, Sumner	86 min
May 16, 2:34 PM MDT	Mesoscale Discussion	SPC	Atchison, Brown, Chase, Coffey, Doniphan, Douglas and 14 more	86 min
May 16, 4:12 PM MDT	Mesoscale Discussion	SPC	Decatur, Finney, Ford, Gove, Graham, Grant and 21 more	93 min
May 16, 4:46 PM MDT	Mesoscale Discussion	SPC	Allen, Anderson, Atchison, Bourbon, Brown, Chase and 20 more	59 min
May 16, 4:57 PM MDT	Tornado Watch	SPC	Anderson, Atchison, Brown, Coffey, Doniphan, Douglas and 10 more	5 hr
May 16, 5:16 PM MDT	Mesoscale Discussion	SPC	Butler, Chautauqua, Cowley, Elk, Greenwood, Harper and 3 more	59 min
May 16, 5:23 PM MDT	Mesoscale Discussion	SPC	Decatur, Ellis, Ford, Gove, Graham, Gray and 10 more	97 min
May 16, 5:36 PM MDT	Tornado Watch	SPC	Allen, Butler, Chautauqua, Cowley, Elk, Greenwood and 6 more	5 hr
May 15, 9:53 PM MDT	Severe Thunderstorm Watch	SPC	Beaver	5 hr
May 16, 12:32 AM MDT	Mesoscale Discussion	SPC	Beaver, Ellis, Harmon	88 min
May 16, 10:57 AM MDT	Mesoscale Discussion	SPC	Beckham, Greer, Harmon, Jackson, Kiowa, Tillman	2 hr
May 16, 11:58 AM MDT	Tornado Watch	SPC	Beaver, Beckham, Greer, Harmon, Jackson, Roger Mills and 2 more	6 hr
May 16, 2:41 PM MDT	Mesoscale Discussion	SPC	Alfalfa, Atoka, Beckham, Blaine, Bryan, Caddo and 42 more	94 min
May 16, 3:00 PM MDT	Tornado Watch	SPC	Alfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 37 more	8 hr
May 16, 4:55 PM MDT	Mesoscale Discussion	SPC	Alfalfa, Beaver, Beckham, Blaine, Bryan, Caddo and 40 more	95 min
May 16, 1:43 PM MDT	Mesoscale Discussion	SPC	Callahan, Coke, Coleman, Concho, Crockett, Glasscock and 18 more	92 min
May 16, 4:47 PM MDT	Tornado Watch	SPC	Brown, Callahan, Coke, Coleman, Comanche, Cooke and 21 more	5 hr

Nearby

Mesoscale Discussions in Texas, 2015 Mesoscale Discussions in Kansas, 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.