Alert archive / Arkansas / Mesoscale Discussions in 2005

Mesoscale Discussion 2415

November 14, 200520 counties in Arkansas; DeSoto County, Tate County, Tunica County, Mississippi; 8 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Nov 14, 2005, 1:12 PM CST for 20 counties in Arkansas; DeSoto County, Tate County, Tunica County, Mississippi; 8 counties in Tennessee. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: Nov 14, 2005, 1:12 PM CST (19:12 UTC)
Expired: Nov 14, 2005, 2:45 PM CST
In force: 93 min
Issued by: the Storm Prediction Center

All 31 counties

Arkansas County, AR, Cleveland County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Grant County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, DeSoto County, MS, Tate County, MS, Tunica County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Lauderdale County, TN, Shelby County, TN, Tipton County, TN

The radar

The Memphis radar (KNQA), 93 km from the middle of the area, began a volume at 19:15 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.

Tornado Watch 861Nov 14, 1:50 PM CST

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 7.2 hours before the alert went out and 82 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 302 m²/s²
0-3 km storm-relative helicity: 352 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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.

Issued	Product	Office	Counties	Lasted
Nov 14, 6:28 AM CST	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 46 more	2 hr
Nov 14, 1:50 PM CST	Tornado Watch	SPC	Arkansas, Calhoun, Clark, Clay, Cleburne, Cleveland and 29 more	7 hr
Nov 14, 3:42 PM CST	Mesoscale Discussion	SPC	Arkansas, Calhoun, Clark, Clay, Cleburne, Cleveland and 29 more	93 min
Nov 14, 5:40 PM CST	Mesoscale Discussion	SPC	Arkansas, Baxter, Benton, Boone, Calhoun, Carroll and 52 more	95 min
Nov 14, 4:56 PM CST	Mesoscale Discussion	SPC	Alcorn, Attala, Calhoun, Carroll, Chickasaw, Choctaw and 26 more	3 hr

Nearby

Mesoscale Discussions in Arkansas, 2005 Mesoscale Discussions in Tennessee, 2005 Mesoscale Discussions in Mississippi, 2005 Every mesoscale discussion in 2005

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.