Alert archive / Arkansas / Mesoscale Discussions in 2019

Mesoscale Discussion 2162

November 26, 201929 counties in Arkansas; 5 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Nov 26, 2019, 7:31 PM CST for 29 counties in Arkansas; 5 counties in Missouri. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
Nov 26, 2019, 7:31 PM CST (01:31 UTC)
Expired
Nov 26, 2019, 9:30 PM CST
In force
119 min
Issued by
the Storm Prediction Center
All 34 counties

Arkansas County, AR, Baxter County, AR, Clay County, AR, Cleburne County, AR, Craighead County, AR, Cross County, AR, Faulkner County, AR, Fulton County, AR, Grant County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lawrence County, AR, Lee County, AR, Lonoke County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, White County, AR, Woodruff County, AR, Butler County, MO, Carter County, MO, Howell County, MO, Oregon County, MO, Ripley County, MO

The radar

The Little Rock radar (KLZK), 68 km from the middle of the area, began a volume at 01:31 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, 1.5 hours before the alert went out and 168 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 2019-11-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 258 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 2019-11-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 square meters per square second.1939587897117Sfc1 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
258 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
744 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
341 m²/s²
Significant tornado parameter
0.4
Supercell composite
1.7

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 26, 6:24 PM CSTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Cleveland, Desha and 3 more2 hr
Nov 26, 6:03 PM CSTMesoscale DiscussionSPCAudrain, Boone, Callaway, Camden, Christian, Cole and 27 more57 min
Nov 26, 6:20 PM CSTTornado WatchSPCAudrain, Barry, Benton, Boone, Callaway, Camden and 49 more6 hr
Nov 26, 9:32 PM CSTMesoscale DiscussionSPCAudrain, Barry, Benton, Boone, Callaway, Camden and 39 more118 min
Nov 26, 10:22 PM CSTTornado WatchSPCPerry4 hr

Nearby

Mesoscale Discussions in Arkansas, 2019Mesoscale Discussions in Missouri, 2019Every mesoscale discussion in 2019

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.