Alert archive / Kansas / Mesoscale Discussions in 2020

Mesoscale Discussion 1190

July 11, 202030 counties in Kansas; 12 counties in Oklahoma; Lipscomb County, Ochiltree County, Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2020, 4:00 PM CDT for 30 counties in Kansas; 12 counties in Oklahoma; Lipscomb County, Ochiltree County, Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jul 11, 2020, 4:00 PM CDT (21:00 UTC)
Expired
Jul 11, 2020, 6:30 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch likely
Chance of a watch
80%
All 44 counties

Barber County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Clark County, KS, Comanche County, KS, Cowley County, KS, Dickinson County, KS, Edwards County, KS, Elk County, KS, Ellsworth County, KS, Ford County, KS, Geary County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Kiowa County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Meade County, KS, Morris County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Saline County, KS, Sedgwick County, KS, Stafford County, KS, Sumner County, KS, Alfalfa County, OK, Beaver County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Major County, OK, Noble County, OK, Woods County, OK, Woodward County, OK, Lipscomb County, TX, Ochiltree County, TX

The radar

The Vance AFB radar (KVNX), 65 km from the middle of the area, began a volume at 20:59 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.0 hours before the alert went out and 246 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 12:00Z on 2020-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1751 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 12:00Z on 2020-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 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
1751 J/kg
Mixed-layer CIN
-247 J/kg
Mixed-layer LCL
1318 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
227 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

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
Jul 10, 7:00 PM CDTMesoscale DiscussionSPCCloud, Jewell, Mitchell, Osborne, Phillips, Republic and 1 more60 min
Jul 11, 1:23 AM CDTMesoscale DiscussionSPCBrown, Jewell, Marshall, Nemaha, Phillips, Republic and 2 more2 hr
Jul 11, 7:38 AM CDTMesoscale DiscussionSPCButler, Chase, Chautauqua, Cowley, Elk, Greenwood and 1 more97 min
Jul 11, 12:43 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Brown, Clay and 22 more92 min
Jul 11, 1:35 PM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Coffey, Dickinson, Douglas, Franklin and 17 more4 hr
Jul 11, 3:07 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 8 more83 min
Jul 11, 3:36 PM CDTSevere Thunderstorm WatchSPCAllen, Bourbon, Cherokee, Crawford, Labette, Neosho and 2 more7 hr
Jul 11, 6:08 PM CDTSevere Thunderstorm WatchSPCBarber, Butler, Chautauqua, Comanche, Cowley, Elk and 6 more7 hr

Nearby

Mesoscale Discussions in Kansas, 2020Mesoscale Discussions in Oklahoma, 2020Mesoscale Discussions in Texas, 2020Every mesoscale discussion in 2020

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.