Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 1823

November 22, 201627 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Nov 22, 2016, 9:13 PM CST for 27 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Nov 22, 2016, 9:13 PM CST (03:13 UTC)
Expired
Nov 22, 2016, 11:15 PM CST
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 27 counties

Anderson County, TX, Bell County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Delta County, TX, Falls County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Henderson County, TX, Hopkins County, TX, Kaufman County, TX, Leon County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Morris County, TX, Navarro County, TX, Rains County, TX, Robertson County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Williamson County, TX, Wood County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 126 km from the middle of the area, began a volume at 03:14 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

Fort Worth, TX (KFWD), launched 00:00Z, 3.2 hours before the alert went out and 142 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, Fort Worth, TX at 00:00Z on 2016-11-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 779 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, Fort Worth, TX at 00:00Z on 2016-11-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.19395878Sfc1 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
779 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
786 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.8
Supercell composite
5.6

Open this sounding in Storm Lab

The text

As transmitted.

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Nearby

Mesoscale Discussions in Texas, 2016Every mesoscale discussion in 2016

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.