Alert archive / Oklahoma / Mesoscale Discussions in 2017

Mesoscale Discussion 1205

June 30, 201741 counties in Oklahoma; 5 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2017, 10:24 PM CDT for 41 counties in Oklahoma; 5 counties in Texas. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Jun 30, 2017, 10:24 PM CDT (03:24 UTC)
Expired
Jun 30, 2017, 11:30 PM CDT
In force
66 min
Issued by
the Storm Prediction Center
All 46 counties

Adair County, OK, Atoka County, OK, Beckham County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cherokee County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Haskell County, OK, Hughes County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Kiowa County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Sequoyah County, OK, Stephens County, OK, Tillman County, OK, Wagoner County, OK, Washita County, OK, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Norman radar (KTLX), 64 km from the middle of the area, began a volume at 03:23 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, 3.4 hours before the alert went out and 240 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 2017-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1697 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 2017-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 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
1697 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
1703 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

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
Jun 30, 7:51 PM CDTMesoscale DiscussionSPCArmstrong, Bailey, Briscoe, Carson, Castro, Childress and 30 more114 min
Jun 30, 11:58 PM CDTMesoscale DiscussionSPCBailey, Castro, Cochran, Hale, Hockley, Lamb and 2 more92 min
Jul 1, 2:34 AM CDTSevere Thunderstorm WatchSPCBorden, Callahan, Coke, Coleman, Crosby, Dawson and 14 more5 hr
Jul 1, 2:56 AM CDTMesoscale DiscussionSPCBorden, Callahan, Coke, Coleman, Crosby, Dawson and 17 more64 min
Jul 1, 5:25 AM CDTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Comanche, Eastland and 6 more2 hr
Jul 1, 11:33 AM CDTMesoscale DiscussionSPCAnderson, Angelina, Camp, Cass, Cherokee, Ellis and 27 more117 min
Jul 1, 4:32 PM CDTMesoscale DiscussionSPCBailey, Cochran118 min

Nearby

Mesoscale Discussions in Oklahoma, 2017Mesoscale Discussions in Texas, 2017Every mesoscale discussion in 2017

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.