Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 2364

September 10, 2003Meade County, Seward County, Kansas; 8 counties in Oklahoma; 16 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Sep 10, 2003, 2:08 PM CDT for Meade County, Seward County, Kansas; 8 counties in Oklahoma; 16 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Sep 10, 2003, 2:08 PM CDT (19:08 UTC)
Expired: Sep 10, 2003, 4:45 PM CDT
In force: 3 hr
Issued by: the Storm Prediction Center

All 26 counties

Meade County, KS, Seward County, KS, Beaver County, OK, Beckham County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Roger Mills County, OK, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Donley County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, Lipscomb County, TX, Motley County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX, Wilbarger County, TX

The radar

The Amarillo radar (KAMA), 137 km from the middle of the area, began a volume at 19:13 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 921Sep 10, 2:55 PM CDT

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 7.1 hours before the alert went out and 136 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: 1127 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 1326 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.1

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
Sep 9, 7:07 PM CDT	Mesoscale Discussion	SPC	Decatur, Ellis, Gove, Graham, Lane, Logan and 12 more	113 min
Sep 9, 9:44 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Clark, Decatur, Edwards, Ellis, Finney and 34 more	3 hr
Sep 10, 11:43 AM CDT	Mesoscale Discussion	SPC	Jewell, Norton, Osborne, Phillips, Republic, Rooks and 1 more	2 hr
Sep 10, 1:55 PM CDT	Tornado Watch	SPC	Graham, Jewell, Mitchell, Norton, Osborne, Phillips and 3 more	6 hr
Sep 10, 2:55 PM CDT	Severe Thunderstorm Watch	SPC	Barton, Clark, Comanche, Edwards, Ellis, Finney and 14 more	5 hr
Sep 10, 2:57 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Sherman	2 hr
Sep 10, 3:57 PM CDT	Mesoscale Discussion	SPC	Graham, Jewell, Mitchell, Norton, Osborne, Phillips and 2 more	93 min
Sep 10, 6:42 PM CDT	Mesoscale Discussion	SPC	Barton, Clark, Comanche, Edwards, Ellis, Ford and 13 more	93 min
Sep 10, 6:53 PM CDT	Mesoscale Discussion	SPC	Jewell, Norton, Phillips, Smith	67 min

Nearby

Mesoscale Discussions in Texas, 2003 Mesoscale Discussions in Oklahoma, 2003 Mesoscale Discussions in Kansas, 2003 Every mesoscale discussion in 2003

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.