Alert archive / Tennessee / Mesoscale Discussions in 2012

Mesoscale Discussion 1042

June 3, 20125 states

The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2012, 8:34 PM CDT for 5 states. It was in force for 56 min.

The area

The outline as issued.

The facts

Issued
Jun 3, 2012, 8:34 PM CDT (01:34 UTC)
Expired
Jun 3, 2012, 9:30 PM CDT
In force
56 min
Issued by
the Storm Prediction Center
All 53 counties

Colbert County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Greene County, AR, Lawrence County, AR, Mississippi County, AR, Poinsett County, AR, Randolph County, AR, St. Francis County, AR, Woodruff County, AR, Dunklin County, MO, Pemiscot County, MO, Alcorn County, MS, Benton County, MS, DeSoto County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo 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, Giles County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Hickman County, TN, Humphreys County, TN, Lake County, TN, Lauderdale County, TN, Lawrence County, TN, Lewis County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Obion County, TN, Perry County, TN, Shelby County, TN, Tipton County, TN, Wayne County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 39 km from the middle of the area, began a volume at 01:37 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 00:00Z, 1.6 hours before the alert went out and 86 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 00:00Z on 2012-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 298 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 00:00Z on 2012-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
298 J/kg
Mixed-layer CIN
-116 J/kg
Mixed-layer LCL
2116 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.5

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
Jun 3, 7:09 PM CDTTornado WatchSPCColbert, Franklin, Lauderdale, Lawrence, Limestone, Morgan7 hr
Jun 3, 11:13 PM CDTMesoscale DiscussionSPCBlount, Cherokee, Colbert, Cullman, DeKalb, Etowah and 10 more62 min
Jun 4, 3:14 AM CDTMesoscale DiscussionSPCColbert, Franklin91 min
Jun 4, 5:33 AM CDTMesoscale DiscussionSPCAutauga, Barbour, Bibb, Blount, Bullock, Butler and 29 more87 min
Jun 4, 8:43 AM CDTMesoscale DiscussionSPCBarbour, Bullock, Chambers, Elmore, Henry, Lee and 5 more2 hr
Jun 3, 7:47 PM CDTMesoscale DiscussionSPCBenton, Carroll, Washington58 min
Jun 3, 11:25 PM CDTSevere Thunderstorm WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more8 hr
Jun 4, 1:51 AM CDTMesoscale DiscussionSPCBenton, Crawford, Madison, Washington54 min
Jun 4, 3:39 AM CDTMesoscale DiscussionSPCCleburne, Conway, Crawford, Faulkner, Franklin, Johnson and 6 more96 min
Jun 4, 1:07 PM CDTMesoscale DiscussionSPCArkansas, Bradley, Calhoun, Cleburne, Cleveland, Conway and 19 more113 min
Jun 4, 5:06 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 13 more114 min
Jun 4, 2:38 PM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Franklin, Iron, Jefferson, Lincoln and 15 more2 hr
Jun 4, 3:25 PM CDTSevere Thunderstorm WatchSPCBollinger, Cape Girardeau, Franklin, Jefferson, Lincoln, Madison and 11 more7 hr
Jun 4, 6:27 PM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Jefferson, Madison, Mississippi, New Madrid and 5 more93 min

Nearby

Mesoscale Discussions in Tennessee, 2012Mesoscale Discussions in Arkansas, 2012Mesoscale Discussions in Mississippi, 2012Every mesoscale discussion in 2012

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.