Alert archive / Arkansas / Mesoscale Discussions in 2006

Mesoscale Discussion 45

January 12, 20065 states

The Storm Prediction Center issued this mesoscale discussion at Jan 12, 2006, 9:52 PM CST for 5 states. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Jan 12, 2006, 9:52 PM CST (03:52 UTC)
Expired
Jan 12, 2006, 11:15 PM CST
In force
83 min
Issued by
the Storm Prediction Center
All 63 counties

Baxter County, AR, Boone County, AR, Clark County, AR, Cleburne County, AR, Columbia County, AR, Conway County, AR, Dallas County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Izard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Marion County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sevier County, AR, Stone County, AR, Van Buren County, AR, Yell County, AR, Bossier Parish, LA, Caddo Parish, LA, Webster Parish, LA, Ozark County, MO, Taney County, MO, McCurtain County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 3.9 hours before the alert went out and 221 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, Shreveport, LA at 00:00Z on 2006-01-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 803 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, Shreveport, LA at 00:00Z on 2006-01-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 208 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
803 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
941 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
208 m²/s²
0-3 km storm-relative helicity
314 m²/s²
Significant tornado parameter
0.9
Supercell composite
3.3

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
Jan 12, 6:53 PM CSTTornado WatchSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 39 more7 hr
Jan 12, 11:10 PM CSTMesoscale DiscussionSPCArkansas, Ashley, Baxter, Bradley, Calhoun, Chicot and 35 more95 min
Jan 12, 11:48 PM CSTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clay and 24 more6 hr
Jan 13, 1:08 AM CSTMesoscale DiscussionSPCCleburne, Columbia, Dallas, Faulkner, Fulton, Hot Spring and 6 more37 min
Jan 13, 1:47 AM CSTMesoscale DiscussionSPCEast Baton Rouge, East Feliciana, Livingston, Saint Helena, Saint Tammany, Tangipahoa and 2 more88 min
Jan 13, 2:14 AM CSTTornado WatchSPCAcadia, Allen, Ascension, Assumption, Avoyelles, East Baton Rouge and 28 more8 hr
Jan 13, 4:00 AM CSTMesoscale DiscussionSPCCatahoula, Concordia, East Carroll, Franklin, LaSalle, Madison and 1 more60 min
Jan 13, 5:20 AM CSTMesoscale DiscussionSPCAcadia, Ascension, Assumption, Avoyelles, Concordia, East Baton Rouge and 22 more85 min
Jan 12, 6:35 PM CSTMesoscale DiscussionSPCBarry, Christian, Dade, Dallas, Dent, Douglas and 15 more115 min

Nearby

Mesoscale Discussions in Arkansas, 2006Mesoscale Discussions in Texas, 2006Mesoscale Discussions in Louisiana, 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.