Alert archive / Arkansas / Tornado Watches in 2006

Tornado Watch 161

April 6, 20065 states

The Storm Prediction Center issued this tornado watch at Apr 6, 2006, 11:33 PM CDT for 5 states. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Apr 6, 2006, 11:33 PM CDT (04:33 UTC)
Expired
Apr 7, 2006, 3:00 AM CDT
In force
3 hr
Issued by
the Storm Prediction Center
All 49 counties

Clay County, AR, Cleburne County, AR, Craighead County, AR, Cross County, AR, Faulkner County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Lawrence County, AR, Mississippi County, AR, Poinsett County, AR, Randolph County, AR, Sharp County, AR, Stone County, AR, White County, AR, Woodruff County, AR, Alexander County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Union County, IL, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dunklin County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Reynolds County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Dyer County, TN, Lake County, TN, Obion County, TN

The radar

The Memphis radar (KNQA), 127 km from the middle of the area, began a volume at 04:35 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.

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.6 hours before the alert went out and 269 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 2006-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 571 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 2006-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 198 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
571 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
665 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
198 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
0.4
Supercell composite
4.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 6, 7:53 PM CDTMesoscale DiscussionSPCBenton, Crawford, Polk, Scott, Sebastian, Washington97 min
Apr 6, 10:21 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 24 more84 min
Apr 7, 9:07 AM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Lee and 5 more113 min
Apr 7, 10:20 AM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 4 more10 hr
Apr 7, 10:47 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Chicot, Desha, Drew and 4 more118 min
Apr 7, 11:34 AM CDTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 10 more8 hr
Apr 7, 2:22 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Chicot, Clay, Craighead, Crittenden and 12 more113 min
Apr 7, 4:53 PM CDTMesoscale DiscussionSPCColumbia, Lafayette67 min
Apr 7, 5:12 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 10 more93 min
Apr 7, 5:37 PM CDTTornado WatchSPCColumbia, Lafayette, Union7 hr
Apr 7, 12:23 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Coles and 21 more2 hr
Apr 7, 12:52 PM CDTTornado WatchSPCBond, Champaign, Christian, Clark, Clay, Clinton and 27 more7 hr
Apr 7, 3:56 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 22 more94 min
Apr 7, 1:35 PM CDTMesoscale DiscussionSPCBath, Bell, Boone, Bourbon, Boyd, Boyle and 55 more55 min
Apr 7, 2:08 PM CDTTornado WatchSPCAnderson, Bath, Bell, Boone, Bourbon, Boyd and 56 more8 hr
Apr 7, 3:57 PM CDTMesoscale DiscussionSPCAnderson, Bath, Bell, Boone, Bourbon, Boyd and 59 more93 min
Apr 6, 7:12 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Caldwell, Clay, Clinton and 9 more63 min
Apr 6, 7:43 PM CDTTornado WatchSPCAndrew, Atchison, Buchanan, Caldwell, Carroll, Clay and 16 more5 hr
Apr 6, 9:51 PM CDTMesoscale DiscussionSPCAdair, Andrew, Atchison, Buchanan, Caldwell, Carroll and 27 more114 min

Nearby

Tornado Watches in Arkansas, 2006Tornado Watches in Missouri, 2006Tornado Watches in Illinois, 2006Every tornado watch 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.