Alert archive / Oklahoma / Mesoscale Discussions in 2004

Mesoscale Discussion 1463

July 1, 200436 counties in Oklahoma; 8 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2004, 8:01 PM CDT for 36 counties in Oklahoma; 8 counties in Texas. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued: Jul 1, 2004, 8:01 PM CDT (01:01 UTC)
Expired: Jul 1, 2004, 9:00 PM CDT
In force: 59 min
Issued by: the Storm Prediction Center

All 44 counties

Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Creek County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Roger Mills County, OK, Rogers County, OK, Tulsa County, OK, Washington County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Childress County, TX, Collingsworth County, TX, Donley County, TX, Hall County, TX, Hemphill County, TX, Lipscomb County, TX, Motley County, TX, Wheeler County, TX

The radar

The Norman radar (KTLX), 98 km from the middle of the area, began a volume at 01:01 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 nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.0 hours before the alert went out and 90 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: -94 J/kg
Mixed-layer LCL: 1398 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.5

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.

Issued	Product	Office	Counties	Lasted
Jul 2, 10:08 AM CDT	Mesoscale Discussion	SPC	Adair, Atoka, Bryan, Cherokee, Choctaw, Cleveland and 32 more	2 hr
Jul 2, 2:12 PM CDT	Mesoscale Discussion	SPC	Cimarron	3 hr
Jul 2, 3:29 PM CDT	Mesoscale Discussion	SPC	Comanche, Cotton, Harmon, Jackson, Jefferson, Tillman	91 min
Jul 2, 3:55 PM CDT	Severe Thunderstorm Watch	SPC	Beckham, Caddo, Comanche, Cotton, Greer, Harmon and 4 more	6 hr
Jul 2, 4:50 PM CDT	Severe Thunderstorm Watch	SPC	Cimarron, Texas	5 hr
Jul 2, 5:15 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Delaware, Haskell, Hughes and 13 more	90 min
Jul 2, 6:50 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Atoka, Cherokee, Coal, Craig, Creek and 20 more	5 hr

Nearby

Mesoscale Discussions in Oklahoma, 2004 Mesoscale Discussions in Texas, 2004 Every 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.