Alert archive / Oklahoma / Mesoscale Discussions in 2020

Mesoscale Discussion 1192

July 11, 20204 counties in Kansas; 7 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2020, 7:00 PM CDT for 4 counties in Kansas; 7 counties in Oklahoma. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Jul 11, 2020, 7:00 PM CDT (00:00 UTC)
Expired: Jul 11, 2020, 8:30 PM CDT
In force: 90 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 358

Counties Elk County, KS, Labette County, KS, Montgomery County, KS, Wilson County, KS, Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Ottawa County, OK, Rogers County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 96 km from the middle of the area, began a volume at 00:03 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

Springfield, MO (KSGF), launched 00:00Z, 0.0 hours before the alert went out and 145 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2598 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 1473 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.0

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.

Issued	Product	Office	Counties	Lasted
Jul 12, 3:07 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Greeley, Logan, Rawlins, Sherman, Thomas and 2 more	7 hr
Jul 12, 6:22 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Rawlins, Sherman, Wallace	83 min
Jul 11, 9:23 PM CDT	Mesoscale Discussion	SPC	Adair, Alfalfa, Blaine, Canadian, Cherokee, Creek and 24 more	2 hr
Jul 11, 10:59 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Blaine, Canadian, Cherokee, Creek, Garfield and 25 more	91 min
Jul 12, 12:42 AM CDT	Severe Thunderstorm Watch	SPC	Atoka, Bryan, Carter, Coal, Comanche, Cotton and 10 more	3 hr
Jul 12, 1:17 AM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Choctaw, Coal, Hughes, Johnston and 7 more	118 min

Nearby

Mesoscale Discussions in Oklahoma, 2020 Mesoscale Discussions in Kansas, 2020 Every 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.