Alert archive / Arkansas / Mesoscale Discussions in 2015

Mesoscale Discussion 1933

November 5, 201528 counties in Arkansas; McCurtain County, Oklahoma; 5 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Nov 5, 2015, 8:14 PM CST for 28 counties in Arkansas; McCurtain County, Oklahoma; 5 counties in Texas. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Nov 5, 2015, 8:14 PM CST (02:14 UTC)
Expired: Nov 5, 2015, 9:15 PM CST
In force: 61 min
Issued by: the Storm Prediction Center

All 34 counties

Baxter County, AR, Clark County, AR, Conway County, AR, Fulton County, AR, Garland 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, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sevier County, AR, Stone County, AR, Van Buren County, AR, Yell County, AR, McCurtain County, OK, Bowie County, TX, Cass County, TX, Morris County, TX, Red River County, TX, Titus County, TX

The radar

The Little Rock radar (KLZK), 100 km from the middle of the area, began a volume at 02:17 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

Springfield, MO (KSGF), launched 00:00Z, 2.2 hours before the alert went out and 265 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: 455 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 561 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 212 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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Nearby

Mesoscale Discussions in Arkansas, 2015 Mesoscale Discussions in Texas, 2015 Mesoscale Discussions in Oklahoma, 2015 Every mesoscale discussion in 2015

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.