Alert archive / Texas / Mesoscale Discussions in 2022

Mesoscale Discussion 397

April 4, 20227 counties in Oklahoma; 19 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 4, 2022, 5:35 PM CDT for 7 counties in Oklahoma; 19 counties in Texas. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
Apr 4, 2022, 5:35 PM CDT (22:35 UTC)
Expired
Apr 4, 2022, 7:00 PM CDT
In force
85 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 91
All 26 counties

Carter County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Jefferson County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coleman County, TX, Comanche County, TX, Eastland County, TX, Erath County, TX, Jack County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Shackelford County, TX, Stephens County, TX, Throckmorton County, TX, Wichita County, TX, Wise County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 56 km from the middle of the area, began a volume at 22:35 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

Midland Regional, TX (KMAF), launched 12:00Z, 10.6 hours before the alert went out and 332 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, Midland Regional, TX at 12:00Z on 2022-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Midland Regional, TX at 12:00Z on 2022-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1296 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
252 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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
Apr 4, 12:29 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Comanche and 15 more91 min
Apr 4, 2:16 PM CDTMesoscale DiscussionSPCCarter, Cotton, Jefferson, Love2 hr
Apr 4, 2:55 PM CDTSevere Thunderstorm WatchSPCCarter, Comanche, Cotton, Jackson, Jefferson, Love and 2 more6 hr
Apr 4, 5:00 PM CDTMesoscale DiscussionSPCDimmit, Edwards, Kinney, Maverick, Real, Uvalde and 1 more2 hr
Apr 4, 6:25 PM CDTMesoscale DiscussionSPCBosque, Collin, Dallas, Delta, Ellis, Fannin and 15 more95 min

Nearby

Mesoscale Discussions in Texas, 2022Mesoscale Discussions in Oklahoma, 2022Every mesoscale discussion in 2022

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.