Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 1367

June 21, 20045 states

The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2004, 1:25 PM MDT for 5 states. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Jun 21, 2004, 1:25 PM MDT (19:25 UTC)
Expired
Jun 21, 2004, 3:00 PM MDT
In force
95 min
Issued by
the Storm Prediction Center
All 59 counties

Alamosa County, CO, Baca County, CO, Bent County, CO, Costilla County, CO, Custer County, CO, Fremont County, CO, Huerfano County, CO, Las Animas County, CO, Otero County, CO, Pueblo County, CO, Clark County, KS, Meade County, KS, Morton County, KS, Seward County, KS, Stanton County, KS, Stevens County, KS, Colfax County, NM, Harding County, NM, Union County, NM, Beaver County, OK, Beckham County, OK, Cimarron County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Roger Mills County, OK, Texas County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Dallam County, TX, Deaf Smith County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hall County, TX, Hansford County, TX, Hardeman County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX, Wheeler County, TX

The radar

The Pueblo radar (KPUX), 185 km from the middle of the area, began a volume at 19:27 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 7.4 hours before the alert went out and 239 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-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2004-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 811 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2004-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 268 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
811 J/kg
Mixed-layer CIN
-219 J/kg
Mixed-layer LCL
1583 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
268 m²/s²
0-3 km storm-relative helicity
361 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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.

IssuedProductOfficeCountiesLasted
Jun 21, 2:45 PM MDTSevere Thunderstorm WatchSPCBaca, Las Animas5 hr
Jun 21, 5:57 PM MDTMesoscale DiscussionSPCBaca, Las Animas93 min
Jun 20, 8:52 PM MDTMesoscale DiscussionSPCBarton, Clark, Decatur, Ellis, Ellsworth, Finney and 38 more83 min
Jun 20, 9:20 PM MDTSevere Thunderstorm WatchSPCCloud, Jewell, Mitchell, Osborne, Phillips, Republic and 2 more5 hr
Jun 20, 9:35 PM MDTSevere Thunderstorm WatchSPCBarber, Barton, Comanche, Edwards, Ellis, Ellsworth and 16 more4 hr
Jun 20, 11:59 PM MDTMesoscale DiscussionSPCAllen, Butler, Chase, Chautauqua, Clay, Cloud and 34 more61 min
Jun 20, 7:39 PM MDTMesoscale DiscussionSPCBeaver, Beckham, Dewey, Ellis, Greer, Harper and 4 more2 hr
Jun 21, 1:00 AM MDTMesoscale DiscussionSPCBlaine, Canadian, Creek, Custer, Dewey, Ellis and 15 more3 hr
Jun 21, 1:36 PM MDTMesoscale DiscussionSPCBowie, Callahan, Camp, Cass, Coleman, Collin and 41 more84 min
Jun 21, 4:21 PM MDTMesoscale DiscussionSPCBrown, Comanche, Eastland, Erath, Hamilton, Mills and 1 more84 min

Nearby

Mesoscale Discussions in Texas, 2004Mesoscale Discussions in Oklahoma, 2004Mesoscale Discussions in Colorado, 2004Every mesoscale discussion in 2004

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.