Alert archive / Arkansas / Mesoscale Discussions in 2006

Mesoscale Discussion 206

March 9, 200613 counties in Arkansas; 10 counties in Missouri; 7 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Mar 9, 2006, 10:34 AM CST for 13 counties in Arkansas; 10 counties in Missouri; 7 counties in Oklahoma. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Mar 9, 2006, 10:34 AM CST (16:34 UTC)
Expired: Mar 9, 2006, 12:30 PM CST
In force: 116 min
Issued by: the Storm Prediction Center

All 30 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Newton County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Barry County, MO, Christian County, MO, Dade County, MO, Greene County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Taney County, MO, Adair County, OK, Cherokee County, OK, Delaware County, OK, LeFlore County, OK, McCurtain County, OK, Ottawa County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 37 km from the middle of the area, began a volume at 16:36 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 51Mar 9, 12:30 PM CST

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 4.6 hours before the alert went out and 149 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: 1055 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 117 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
Mar 9, 1:14 AM CST	Severe Thunderstorm Watch	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Crawford and 16 more	6 hr
Mar 9, 1:36 AM CST	Tornado Watch	SPC	Arkansas, Bradley, Calhoun, Clark, Cleveland, Columbia and 33 more	5 hr
Mar 9, 1:57 AM CST	Mesoscale Discussion	SPC	Polk, Scott, Sebastian	63 min
Mar 9, 5:48 AM CST	Tornado Watch	SPC	Ashley, Chicot, Columbia, Hempstead, Howard, Lafayette and 5 more	6 hr
Mar 9, 6:10 AM CST	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Clay, Cleburne and 30 more	95 min
Mar 9, 6:52 AM CST	Tornado Watch	SPC	Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 39 more	6 hr
Mar 9, 10:30 AM CST	Mesoscale Discussion	SPC	Arkansas, Bradley, Clay, Cleveland, Craighead, Crittenden and 18 more	2 hr
Mar 9, 11:05 AM CST	Mesoscale Discussion	SPC	Chicot	85 min
Mar 9, 11:29 AM CST	Tornado Watch	SPC	Chicot	7 hr
Mar 9, 12:30 PM CST	Severe Thunderstorm Watch	SPC	Baxter, Benton, Boone, Carroll, Conway, Crawford and 20 more	6 hr
Mar 9, 1:55 PM CST	Mesoscale Discussion	SPC	Clark, Cleburne, Faulkner, Fulton, Grant, Hot Spring and 14 more	2 hr
Mar 9, 3:06 PM CST	Mesoscale Discussion	SPC	Baxter, Boone, Conway, Marion, Newton, Perry and 3 more	84 min
Mar 9, 4:44 PM CST	Mesoscale Discussion	SPC	Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more	61 min
Mar 9, 5:18 PM CST	Tornado Watch	SPC	Clay, Craighead, Greene, Mississippi	3 hr
Mar 8, 7:04 PM CST	Mesoscale Discussion	SPC	Barton, Bates, Benton, Boone, Caldwell, Camden and 32 more	56 min
Mar 8, 8:22 PM CST	Mesoscale Discussion	SPC	Newton	53 min
Mar 8, 9:56 PM CST	Mesoscale Discussion	SPC	Barton, Bates, Cass, Cedar, Dade, Henry and 3 more	64 min
Mar 9, 12:55 PM CST	Tornado Watch	SPC	Mississippi, New Madrid, Pemiscot	6 hr
Mar 8, 8:26 PM CST	Severe Thunderstorm Watch	SPC	Caddo, Canadian, Cleveland, Creek, Garfield, Grady and 24 more	5 hr
Mar 8, 10:51 PM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Comanche and 11 more	24 min
Mar 8, 11:42 PM CST	Tornado Watch	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Comanche and 14 more	6 hr
Mar 8, 11:44 PM CST	Mesoscale Discussion	SPC	Caddo, Canadian, Cleveland, Creek, Garfield, Grady and 24 more	91 min

Nearby

Mesoscale Discussions in Arkansas, 2006 Mesoscale Discussions in Missouri, 2006 Mesoscale Discussions in Oklahoma, 2006 Every mesoscale discussion in 2006

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.