Alert archive / Arkansas / Mesoscale Discussions in 2006

Mesoscale Discussion 401

April 2, 20066 states

The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2006, 10:42 AM CDT for 6 states. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Apr 2, 2006, 10:42 AM CDT (15:42 UTC)
Expired
Apr 2, 2006, 12:15 PM CDT
In force
93 min
Issued by
the Storm Prediction Center
All 57 counties

Arkansas County, AR, Clay County, AR, Cleveland County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Grant County, AR, Greene County, AR, Independence County, AR, Jackson County, AR, Jefferson County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Alexander County, IL, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Bollinger County, MO, Butler County, MO, Carter County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, DeSoto County, MS, Tunica County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Haywood County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 78 km from the middle of the area, began a volume at 15:42 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

Little Rock, AR (KLZK), launched 12:00Z, 3.7 hours before the alert went out and 103 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 2006-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 258 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 2006-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 square meters per square second.193958Sfc1 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
258 J/kg
Mixed-layer CIN
-207 J/kg
Mixed-layer LCL
540 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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
Apr 1, 6:30 PM CSTMesoscale DiscussionSPCArkansas, Cleveland, Conway, Crawford, Dallas, Faulkner and 21 more90 min
Apr 1, 11:36 PM CSTSevere Thunderstorm WatchSPCBenton, Carroll, Madison, Washington4 hr
Apr 2, 12:44 AM CSTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 8 more2 hr
Apr 2, 11:34 AM CDTSevere Thunderstorm WatchSPCColumbia, Lafayette, Miller, Nevada6 hr
Apr 2, 2:15 PM CDTMesoscale DiscussionSPCArkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 42 more90 min
Apr 2, 3:27 PM CDTTornado WatchSPCBaxter, Boone, Clay, Cleburne, Conway, Craighead and 25 more7 hr
Apr 2, 4:40 PM CDTTornado WatchSPCArkansas, Ashley, Chicot, Craighead, Crittenden, Cross and 12 more6 hr
Apr 2, 12:28 PM CDTTornado WatchSPCAdams, Brown, Hancock, Henderson, McDonough, Pike and 1 more8 hr
Apr 2, 3:16 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Bureau, Calhoun, Cass and 37 more89 min
Apr 2, 3:50 PM CDTTornado WatchSPCAlexander, Bond, Brown, Bureau, Calhoun, Cass and 35 more5 hr
Apr 2, 5:28 PM CDTTornado WatchSPCBoone, Carroll, Cook, DeKalb, DuPage, Ford and 16 more4 hr
Apr 2, 5:44 PM CDTTornado WatchSPCChampaign, Clark, Clay, Coles, Crawford, Cumberland and 20 more7 hr
Apr 2, 6:51 PM CDTMesoscale DiscussionSPCChampaign, Clark, Clay, Coles, Crawford, Cumberland and 21 more54 min
Apr 2, 1:14 PM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Clinton, Cumberland, McCreary and 5 more91 min
Apr 2, 5:08 PM CDTSevere Thunderstorm WatchSPCBath, Bell, Bourbon, Boyle, Breathitt, Casey and 37 more5 hr
Apr 2, 1:35 AM CSTSevere Thunderstorm WatchSPCCamden, Christian, Dallas, Dent, Douglas, Greene and 14 more3 hr
Apr 2, 9:41 AM CDTMesoscale DiscussionSPCAndrew, Atchison, Bates, Buchanan, Caldwell, Carroll and 24 more2 hr
Apr 2, 11:34 AM CDTMesoscale DiscussionSPCAudrain, Barry, Benton, Boone, Callaway, Camden and 32 more116 min
Apr 2, 1:13 PM CDTSevere Thunderstorm WatchSPCAndrew, Atchison, Buchanan, Caldwell, Clay, Clinton and 9 more4 hr

Nearby

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