Alert archive / Oklahoma / Mesoscale Discussions in 2006

Mesoscale Discussion 202

March 9, 2006Polk County, Scott County, Sebastian County, Arkansas; 20 counties in Oklahoma; 9 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 9, 2006, 1:57 AM CST for Polk County, Scott County, Sebastian County, Arkansas; 20 counties in Oklahoma; 9 counties in Texas. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Mar 9, 2006, 1:57 AM CST (07:57 UTC)
Expired: Mar 9, 2006, 3:00 AM CST
In force: 63 min
Issued by: the Storm Prediction Center

All 32 counties

Polk County, AR, Scott County, AR, Sebastian County, AR, Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Coal County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, McCurtain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Sequoyah County, OK, Collin County, TX, Cooke County, TX, Delta County, TX, Denton County, TX, Fannin County, TX, Grayson County, TX, Lamar County, TX, Montague County, TX, Red River County, TX

The radar

The Norman radar (KTLX), 147 km from the middle of the area, began a volume at 08:00 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, 8.0 hours before the alert went out and 147 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: 727 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1304 m above ground
0-6 km bulk shear: 84 kt
0-1 km storm-relative helicity: 208 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.6

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, 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, 10:34 AM CST	Mesoscale Discussion	SPC	Benton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more	116 min
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, 8:22 PM CST	Mesoscale Discussion	SPC	Alfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 49 more	53 min
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
Mar 8, 11:02 PM CST	Mesoscale Discussion	SPC	Atascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 32 more	88 min
Mar 8, 11:25 PM CST	Tornado Watch	SPC	Anderson, Bastrop, Bell, Bexar, Blanco, Burnet and 31 more	7 hr
Mar 9, 5:14 AM CST	Mesoscale Discussion	SPC	Angelina, Hardin, Harrison, Houston, Jasper, Jefferson and 14 more	91 min

Nearby

Mesoscale Discussions in Oklahoma, 2006 Mesoscale Discussions in Texas, 2006 Mesoscale Discussions in Arkansas, 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.