Alert archive / Oklahoma / Mesoscale Discussions in 2014

Mesoscale Discussion 889

June 7, 20148 counties in Arkansas; 10 counties in Oklahoma; Bowie County, Red River County, Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2014, 9:55 PM CDT for 8 counties in Arkansas; 10 counties in Oklahoma; Bowie County, Red River County, Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 7, 2014, 9:55 PM CDT (02:55 UTC)
Expired
Jun 8, 2014, 12:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
20%

Counties Howard County, AR, Little River County, AR, Montgomery County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Atoka County, OK, Choctaw County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McCurtain County, OK, McIntosh County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK, Bowie County, TX, Red River County, TX

The radar

The Western Arkansas radar (KSRX), 102 km from the middle of the area, began a volume at 02:56 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

Norman, OK (KOUN), launched 00:00Z, 2.9 hours before the alert went out and 232 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, Norman, OK at 00:00Z on 2014-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 329 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, Norman, OK at 00:00Z on 2014-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
329 J/kg
Mixed-layer CIN
-313 J/kg
Mixed-layer LCL
1610 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

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
Jun 8, 11:24 AM CDTMesoscale DiscussionSPCAshley, Chicot, Columbia, Union66 min
Jun 8, 1:39 PM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Clark, Cleveland, Columbia and 11 more2 hr
Jun 8, 2:19 PM CDTSevere Thunderstorm WatchSPCAshley, Bradley, Calhoun, Chicot, Columbia, Desha and 10 more7 hr
Jun 8, 3:37 PM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Columbia, Desha and 8 more83 min
Jun 7, 7:06 PM CDTMesoscale DiscussionSPCCaddo, Carter, Coal, Comanche, Cotton, Garvin and 14 more2 hr
Jun 7, 8:14 PM CDTSevere Thunderstorm WatchSPCBeckham, Bryan, Caddo, Carter, Comanche, Cotton and 18 more8 hr
Jun 7, 9:50 PM CDTMesoscale DiscussionSPCBeckham, Harmon85 min
Jun 8, 2:02 AM CDTMesoscale DiscussionSPCAtoka, Caddo, Carter, Cleveland, Coal, Comanche and 20 more118 min
Jun 8, 2:37 PM CDTMesoscale DiscussionSPCCimarron53 min
Jun 8, 2:55 PM CDTTornado WatchSPCCimarron8 hr
Jun 8, 5:25 PM CDTMesoscale DiscussionSPCCimarron, Texas2 hr
Jun 7, 11:43 PM CDTMesoscale DiscussionSPCAndrews, Borden, Dawson, Gaines, Howard, Martin and 2 more92 min
Jun 8, 10:32 AM CDTMesoscale DiscussionSPCBorden, Coke, Crosby, Dawson, Fisher, Gaines and 16 more118 min
Jun 8, 2:43 PM CDTMesoscale DiscussionSPCAndrews, Coke, Concho, Crane, Crockett, Ector and 27 more3 hr
Jun 8, 5:09 PM CDTTornado WatchSPCAndrews, Brewster, Cochran, Crane, Culberson, Dawson and 15 more8 hr
Jun 8, 6:34 PM CDTMesoscale DiscussionSPCBosque, Brewster, Concho, Coryell, Crockett, Hamilton and 14 more86 min

Nearby

Mesoscale Discussions in Oklahoma, 2014Mesoscale Discussions in Arkansas, 2014Mesoscale Discussions in Texas, 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.