Alert archive / Tennessee / Mesoscale Discussions in 2006

Mesoscale Discussion 984

May 26, 20065 counties in Alabama; 8 counties in Mississippi; 14 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at May 26, 2006, 3:57 AM CDT for 5 counties in Alabama; 8 counties in Mississippi; 14 counties in Tennessee. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
May 26, 2006, 3:57 AM CDT (08:57 UTC)
Expired
May 26, 2006, 5:30 AM CDT
In force
93 min
Issued by
the Storm Prediction Center
All 27 counties

Colbert County, AL, Jackson County, AL, Lauderdale County, AL, Limestone County, AL, Madison County, AL, Alcorn County, MS, Benton County, MS, Lafayette County, MS, Marshall County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Chester County, TN, Fayette County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Lincoln County, TN, Marion County, TN, McNairy County, TN, Moore County, TN, Sequatchie County, TN, Tipton County, TN

The radar

The Memphis radar (KNQA), 130 km from the middle of the area, began a volume at 09:01 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, 9.0 hours before the alert went out and 140 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 2006-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3271 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 2006-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.1939Sfc1 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
3271 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1370 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.8

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
May 26, 12:53 AM CDTSevere Thunderstorm WatchSPCJackson, Lauderdale, Limestone, Madison4 hr
May 26, 5:57 PM CDTSevere Thunderstorm WatchSPCColbert, DeKalb, Franklin, Jackson, Lauderdale, Lawrence and 4 more5 hr
May 26, 1:11 AM CDTMesoscale DiscussionSPCCampbell, Carter, Claiborne, Grainger, Greene, Hamblen and 8 more94 min
May 26, 10:42 AM CDTMesoscale DiscussionSPCCarter, Greene, Johnson, Sullivan, Unicoi, Washington2 hr
May 26, 4:35 PM CDTSevere Thunderstorm WatchSPCCarroll, Chester, Crockett, Decatur, Dyer, Fayette and 14 more6 hr

Nearby

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