Alert archive / Arkansas / Mesoscale Discussions in 2006

Mesoscale Discussion 282

March 13, 20064 states

The Storm Prediction Center issued this mesoscale discussion at Mar 13, 2006, 9:02 AM CST for 4 states. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued
Mar 13, 2006, 9:02 AM CST (15:02 UTC)
Expired
Mar 13, 2006, 10:00 AM CST
In force
58 min
Issued by
the Storm Prediction Center
All 25 counties

Arkansas County, AR, Ashley County, AR, Chicot County, AR, Crittenden County, AR, Cross County, AR, Desha County, AR, Drew County, AR, Lee County, AR, Lincoln County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, St. Francis County, AR, Dunklin County, MO, Pemiscot County, MO, Bolivar County, MS, Coahoma County, MS, Tunica County, MS, Washington County, MS, Dyer County, TN, Lake County, TN, Lauderdale County, TN, Shelby County, TN, Tipton County, TN

The radar

The Memphis radar (KNQA), 67 km from the middle of the area, began a volume at 15:02 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

Little Rock, AR (KLZK), launched 12:00Z, 3.0 hours before the alert went out and 69 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, Little Rock, AR at 12:00Z on 2006-03-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 759 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, Little Rock, AR at 12:00Z on 2006-03-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 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
759 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
657 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
0.9
Supercell composite
3.2

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
Mar 12, 9:13 PM CSTMesoscale DiscussionSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 4 more62 min
Mar 12, 9:34 PM CSTTornado WatchSPCBaxter, Benton, Boone, Carroll, Conway, Crawford and 17 more7 hr
Mar 12, 11:30 PM CSTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 8 more2 hr
Mar 12, 11:53 PM CSTTornado WatchSPCHoward, Little River, Miller, Montgomery, Pike, Polk and 1 more6 hr
Mar 13, 2:44 AM CSTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Clay, Cleburne and 35 more91 min
Mar 13, 3:13 AM CSTTornado WatchSPCArkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 37 more7 hr
Mar 13, 6:08 AM CSTMesoscale DiscussionSPCCrittenden, Mississippi, Poinsett97 min
Mar 13, 12:36 PM CSTMesoscale DiscussionSPCAlcorn, Attala, Benton, Calhoun, Carroll, Chickasaw and 25 more114 min
Mar 13, 1:48 PM CSTTornado WatchSPCAlcorn, Attala, Calhoun, Carroll, Chickasaw, Choctaw and 19 more6 hr
Mar 13, 3:32 PM CSTMesoscale DiscussionSPCAmite, Clarke, Copiah, Covington, Forrest, George and 17 more88 min
Mar 13, 3:59 PM CSTMesoscale DiscussionSPCAlcorn, Calhoun, Chickasaw, Choctaw, Clay, Itawamba and 10 more91 min
Mar 13, 5:41 PM CSTMesoscale DiscussionSPCChoctaw, Clay, Itawamba, Kemper, Lowndes, Monroe and 5 more64 min
Mar 12, 6:28 PM CSTMesoscale DiscussionSPCAdair, Audrain, Barton, Bates, Benton, Boone and 65 more92 min
Mar 12, 8:00 PM CSTMesoscale DiscussionSPCAdair, Audrain, Barton, Bates, Benton, Boone and 59 more90 min
Mar 12, 8:42 PM CSTTornado WatchSPCAdair, Audrain, Barry, Barton, Bates, Benton and 72 more7 hr
Mar 13, 12:35 AM CSTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Iron, Madison and 9 more85 min
Mar 13, 1:06 AM CSTTornado WatchSPCBollinger, Butler, Cape Girardeau, Carter, Madison, Mississippi and 8 more6 hr
Mar 13, 6:56 AM CSTSevere Thunderstorm WatchSPCBenton, Carroll, Crockett, Gibson, Henry, Houston and 4 more4 hr
Mar 13, 4:48 PM CSTTornado WatchSPCAnderson, Bledsoe, Blount, Bradley, Campbell, Claiborne and 16 more5 hr

Nearby

Mesoscale Discussions in Arkansas, 2006Mesoscale Discussions in Tennessee, 2006Mesoscale Discussions in Mississippi, 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.