Alert archive / Tennessee / Mesoscale Discussions in 2010

Mesoscale Discussion 1997

October 26, 20107 states

The Storm Prediction Center issued this mesoscale discussion at Oct 26, 2010, 3:38 AM CDT for 7 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Oct 26, 2010, 3:38 AM CDT (08:38 UTC)
Expired
Oct 26, 2010, 5:45 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 120 counties

Clay County, AR, Cleburne County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Lawrence County, AR, Lee County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Randolph County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, White County, AR, Woodruff County, AR, Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saline County, IL, Union County, IL, Washington County, IL, White County, IL, Williamson County, IL, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dunklin County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Alcorn County, MS, Benton County, MS, DeSoto County, MS, Marshall County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Union County, MS, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Houston County, TN, Humphreys County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Perry County, TN, Shelby County, TN, Stewart County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 97 km from the middle of the area, began a volume at 08:42 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

Nashville Metro, TN (KBNA), launched 00:00Z, 8.6 hours before the alert went out and 288 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, Nashville Metro, TN at 00:00Z on 2010-10-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 74 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, Nashville Metro, TN at 00:00Z on 2010-10-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 240 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
74 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
905 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
240 m²/s²
0-3 km storm-relative helicity
343 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Oct 25, 10:41 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 7 more64 min
Oct 26, 4:05 AM CDTTornado WatchSPCArkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 44 more8 hr
Oct 26, 6:00 AM CDTMesoscale DiscussionSPCArkansas, Clay, Craighead, Crittenden, Cross, Grant and 11 more2 hr
Oct 25, 9:36 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Bureau, Calhoun, Carroll and 38 more24 min
Oct 25, 10:03 PM CDTTornado WatchSPCAdams, Boone, Brown, Bureau, Calhoun, Carroll and 39 more9 hr
Oct 26, 2:21 AM CDTMesoscale DiscussionSPCAdams, Boone, Brown, Bureau, Calhoun, Carroll and 54 more114 min
Oct 26, 3:28 AM CDTTornado WatchSPCBond, Champaign, Christian, Clark, Clay, Clinton and 32 more8 hr
Oct 26, 7:55 AM CDTTornado WatchSPCAdams, Allen, Bartholomew, Blackford, Clark, Crawford and 31 more7 hr
Oct 26, 12:09 PM CDTMesoscale DiscussionSPCBoyd, Breathitt, Carter, Elliott, Floyd, Greenup and 10 more66 min
Oct 26, 12:36 PM CDTTornado WatchSPCBath, Bell, Boyd, Breathitt, Carter, Clay and 31 more7 hr
Oct 26, 4:45 PM CDTMesoscale DiscussionSPCBoyd, Breathitt, Carter, Elliott, Floyd, Greenup and 10 more90 min
Oct 26, 8:54 AM CDTMesoscale DiscussionSPCItawamba, Monroe, Tishomingo66 min
Oct 26, 10:05 AM CDTMesoscale DiscussionSPCAttala, Carroll, Choctaw, Claiborne, Copiah, Hinds and 20 more115 min
Oct 26, 11:26 AM CDTMesoscale DiscussionSPCAlcorn, Attala, Calhoun, Carroll, Chickasaw, Choctaw and 24 more64 min
Oct 26, 11:42 AM CDTTornado WatchSPCAlcorn, Attala, Calhoun, Carroll, Chickasaw, Choctaw and 35 more7 hr
Oct 26, 3:12 PM CDTMesoscale DiscussionSPCAttala, Choctaw, Claiborne, Clay, Copiah, Hinds and 14 more93 min
Oct 26, 6:32 PM CDTMesoscale DiscussionSPCLowndes58 min
Oct 26, 9:27 AM CDTTornado Watch PDSSPCBedford, Benton, Bledsoe, Cannon, Cheatham, Clay and 41 more11 hr
Oct 26, 11:57 AM CDTMesoscale DiscussionSPCAnderson, Bedford, Bledsoe, Cannon, Clay, Coffee and 31 more93 min
Oct 26, 1:16 PM CDTTornado WatchSPCAnderson, Bledsoe, Blount, Bradley, Campbell, Carter and 27 more8 hr
Oct 26, 3:44 PM CDTMesoscale DiscussionSPCFranklin61 min

Nearby

Mesoscale Discussions in Tennessee, 2010Mesoscale Discussions in Arkansas, 2010Mesoscale Discussions in Kentucky, 2010Every mesoscale discussion in 2010

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.