Alert archive / Oklahoma / Mesoscale Discussions in 2022

Mesoscale Discussion 660

May 5, 202210 counties in Oklahoma; Fannin County, Lamar County, Red River County, Texas

The Storm Prediction Center issued this mesoscale discussion at May 5, 2022, 1:18 PM CDT for 10 counties in Oklahoma; Fannin County, Lamar County, Red River County, Texas. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
May 5, 2022, 1:18 PM CDT (18:18 UTC)
Expired
May 5, 2022, 2:45 PM CDT
In force
87 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch unlikely
Chance of a watch
20%

Counties Atoka County, OK, Bryan County, OK, Choctaw County, OK, Coal County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McCurtain County, OK, Pittsburg County, OK, Pushmataha County, OK, Fannin County, TX, Lamar County, TX, Red River County, TX

The radar

The Western Arkansas radar (KSRX), 137 km from the middle of the area, began a volume at 18:19 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 12:00Z, 6.3 hours before the alert went out and 248 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 12:00Z on 2022-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1562 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 12:00Z on 2022-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 274 square meters per square second.1939587897Sfc1 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
1562 J/kg
Mixed-layer CIN
-147 J/kg
Mixed-layer LCL
750 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
274 m²/s²
0-3 km storm-relative helicity
346 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.2

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
May 4, 7:19 PM CDTMesoscale DiscussionSPCCleveland, McClain, McIntosh, Okfuskee, Okmulgee, Pottawatomie and 1 more56 min
May 4, 7:36 PM CDTMesoscale DiscussionSPCHarmon, Tillman84 min
May 4, 9:13 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Caddo, Carter, Cleveland, Coal and 30 more92 min
May 4, 9:41 PM CDTTornado WatchSPCAdair, Atoka, Bryan, Caddo, Carter, Cherokee and 31 more6 hr
May 4, 11:33 PM CDTMesoscale DiscussionSPCAtoka, Carter, Cleveland, Coal, Comanche, Cotton and 27 more117 min
May 5, 1:42 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Garvin and 13 more2 hr
May 5, 10:31 AM CDTMesoscale DiscussionSPCAtoka, Carter, Cleveland, Coal, Creek, Garvin and 27 more119 min
May 4, 7:16 PM CDTMesoscale DiscussionSPCCoke, Crockett, Edwards, Fisher, Glasscock, Haskell and 18 more119 min
May 4, 9:07 PM CDTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bexar, Blanco, Comal, Frio and 7 more5 hr
May 4, 9:17 PM CDTMesoscale DiscussionSPCCallahan, Coke, Crockett, Haskell, Irion, Jones and 8 more28 min
May 4, 10:45 PM CDTMesoscale DiscussionSPCBexar, Medina90 min
May 5, 9:45 AM CDTMesoscale DiscussionSPCAnderson, Bell, Brazos, Burleson, Camp, Cass and 21 more2 hr
May 5, 10:13 AM CDTTornado WatchSPCAnderson, Angelina, Bastrop, Bell, Blanco, Bowie and 54 more8 hr
May 5, 12:57 PM CDTMesoscale DiscussionSPCAnderson, Angelina, Bastrop, Brazos, Burleson, Caldwell and 32 more63 min
May 5, 3:08 PM CDTMesoscale DiscussionSPCAngelina, Brazos, Cherokee, Grimes, Houston, Madison and 7 more2 hr
May 5, 5:53 PM CDTMesoscale DiscussionSPCAustin, Bastrop, Blanco, Burleson, Caldwell, Fayette and 15 more97 min

Nearby

Mesoscale Discussions in Oklahoma, 2022Mesoscale Discussions in Texas, 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.