Alert archive / Oklahoma / Mesoscale Discussions in 2004

Mesoscale Discussion 1472

July 2, 20049 counties in Arkansas; 6 counties in Missouri; 19 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2004, 5:15 PM CDT for 9 counties in Arkansas; 6 counties in Missouri; 19 counties in Oklahoma. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Jul 2, 2004, 5:15 PM CDT (22:15 UTC)
Expired: Jul 2, 2004, 6:45 PM CDT
In force: 90 min
Issued by: the Storm Prediction Center

All 34 counties

Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Logan County, AR, Madison County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Barry County, MO, Christian County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pittsburg County, OK, Rogers County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Western Arkansas radar (KSRX), 71 km from the middle of the area, began a volume at 22:18 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 537Jul 2, 6:50 PM CDT

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.3 hours before the alert went out and 157 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: 1342 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 29 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
Jul 2, 10:08 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Clark, Cleburne and 35 more	2 hr
Jul 2, 6:50 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Carroll, Crawford, Franklin, Johnson, Madison and 3 more	5 hr
Jul 1, 8:01 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 30 more	59 min
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

Nearby

Mesoscale Discussions in Oklahoma, 2004 Mesoscale Discussions in Arkansas, 2004 Mesoscale Discussions in Missouri, 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.