Alert archive / Oklahoma / Mesoscale Discussions in 2006

Mesoscale Discussion 2020

September 23, 200612 counties in Arkansas; Barry County, McDonald County, Missouri; 22 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Sep 23, 2006, 2:12 AM CDT for 12 counties in Arkansas; Barry County, McDonald County, Missouri; 22 counties in Oklahoma. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued
Sep 23, 2006, 2:12 AM CDT (07:12 UTC)
Expired
Sep 23, 2006, 3:15 AM CDT
In force
63 min
Issued by
the Storm Prediction Center
All 36 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, Scott County, AR, Sebastian County, AR, Washington County, AR, Barry County, MO, McDonald County, MO, Adair County, OK, Atoka County, OK, Bryan County, OK, Carter County, OK, Cherokee County, OK, Coal County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Marshall County, OK, Mayes County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Western Arkansas radar (KSRX), 74 km from the middle of the area, began a volume at 07:14 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 7.2 hours before the alert went out and 199 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2006-09-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 287 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2006-09-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
287 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1903 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

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.

IssuedProductOfficeCountiesLasted
Sep 22, 7:32 PM CDTMesoscale DiscussionSPCBenton, Crawford, Washington88 min
Sep 22, 8:58 PM CDTTornado WatchSPCBenton, Carroll, Crawford, Franklin, Logan, Madison and 5 more7 hr
Sep 22, 10:23 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clay, Cleburne and 27 more2 hr
Sep 23, 12:59 AM CDTTornado WatchSPCBaxter, Boone, Clay, Cleburne, Conway, Craighead and 16 more8 hr
Sep 23, 3:33 AM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 22 more7 hr
Sep 23, 4:10 AM CDTMesoscale DiscussionSPCBaxter, Clay, Cleburne, Craighead, Fulton, Greene and 9 more2 hr
Sep 23, 7:35 AM CDTMesoscale DiscussionSPCArkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 38 more85 min
Sep 23, 8:49 AM CDTTornado WatchSPCArkansas, Clay, Cleburne, Conway, Craighead, Crittenden and 30 more5 hr
Sep 23, 10:51 AM CDTMesoscale DiscussionSPCArkansas, Clark, Cleveland, Craighead, Crittenden, Cross and 28 more114 min
Sep 23, 12:17 PM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Columbia, Hempstead, Lafayette and 5 more2 hr
Sep 23, 1:37 PM CDTMesoscale DiscussionSPCArkansas, Cleveland, Crittenden, Desha, Jefferson, Lee and 5 more83 min
Sep 23, 2:08 PM CDTSevere Thunderstorm WatchSPCBradley, Calhoun, Clark, Cleveland, Columbia, Dallas and 13 more6 hr
Sep 23, 4:19 PM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Cleveland, Columbia and 5 more116 min
Sep 22, 7:50 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 22 more115 min

Nearby

Mesoscale Discussions in Oklahoma, 2006Mesoscale Discussions in Arkansas, 2006Mesoscale Discussions in Missouri, 2006Every 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.