Alert archive / Oklahoma / Mesoscale Discussions in 2014

Mesoscale Discussion 580

May 12, 20145 states

The Storm Prediction Center issued this mesoscale discussion at May 12, 2014, 11:52 AM CDT for 5 states. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
May 12, 2014, 11:52 AM CDT (16:52 UTC)
Expired
May 12, 2014, 1:15 PM CDT
In force
83 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 58 counties

Benton County, AR, Cherokee County, KS, Labette County, KS, McDonald County, MO, Newton County, MO, Adair County, OK, Atoka County, OK, Bryan County, OK, Carter County, OK, Cherokee County, OK, Coal County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Bosque County, TX, Brown County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Denton County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Somervell County, TX, Tarrant County, TX, Wise County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 148 km from the middle of the area, began a volume at 16:53 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, 4.9 hours before the alert went out and 120 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 2014-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1938 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 2014-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.193958Sfc1 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
1938 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
721 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
278 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 12, 2:12 PM CDTMesoscale DiscussionSPCBenton, Carroll2 hr
May 11, 8:30 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Clay, Cloud, Comanche and 25 more90 min
May 11, 9:56 PM CDTSevere Thunderstorm WatchSPCAtchison, Brown, Butler, Chase, Clay, Cowley and 26 more6 hr
May 11, 11:41 PM CDTMesoscale DiscussionSPCBarber, Chase, Dickinson, Geary, Harper, Harvey and 7 more64 min
May 12, 2:38 AM CDTMesoscale DiscussionSPCAnderson, Atchison, Coffey, Douglas, Franklin, Jefferson and 7 more2 hr
May 12, 3:15 AM CDTSevere Thunderstorm WatchSPCJohnson, Leavenworth, Miami, Wyandotte3 hr
May 12, 11:54 AM CDTMesoscale DiscussionSPCAdair, Caldwell, Carroll, Chariton, Clark, Daviess and 18 more2 hr
May 12, 1:00 PM CDTSevere Thunderstorm WatchSPCAdair, Clark, Knox, Lewis, Linn, Macon and 6 more7 hr
May 12, 3:21 PM CDTMesoscale DiscussionSPCAdair, Clark, Knox, Lewis, Linn, Macon and 6 more54 min
May 11, 7:51 PM CDTMesoscale DiscussionSPCBeckham, Greer, Harmon, Jackson, Kiowa, Roger Mills and 2 more54 min
May 11, 8:18 PM CDTSevere Thunderstorm WatchSPCBeckham, Blaine, Custer, Dewey, Greer, Harmon and 5 more6 hr
May 12, 2:38 PM CDTMesoscale DiscussionSPCAtascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 17 more97 min
May 12, 6:08 PM CDTMesoscale DiscussionSPCBurnet, Coryell, Gillespie, Kerr, Kimble, Lampasas and 4 more97 min

Nearby

Mesoscale Discussions in Oklahoma, 2014Mesoscale Discussions in Texas, 2014Mesoscale Discussions in Kansas, 2014Every mesoscale discussion in 2014

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.