Alert archive / Oklahoma / Mesoscale Discussions in 2016

Mesoscale Discussion 453

April 26, 2016Chautauqua County, Labette County, Montgomery County, Kansas; 7 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2016, 10:09 AM CDT for Chautauqua County, Labette County, Montgomery County, Kansas; 7 counties in Oklahoma. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Apr 26, 2016, 10:09 AM CDT (15:09 UTC)
Expired: Apr 26, 2016, 11:45 AM CDT
In force: 96 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Chautauqua County, KS, Labette County, KS, Montgomery County, KS, Creek County, OK, Lincoln County, OK, Nowata County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 80 km from the middle of the area, began a volume at 15:09 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 12:00Z, 3.2 hours before the alert went out and 174 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: 2872 J/kg
Mixed-layer CIN: -157 J/kg
Mixed-layer LCL: 657 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.3

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
Apr 26, 2:18 AM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Clay, Cloud, Dickinson, Doniphan and 21 more	117 min
Apr 26, 3:02 AM CDT	Severe Thunderstorm Watch	SPC	Brown, Clay, Cloud, Douglas, Geary, Jackson and 14 more	6 hr
Apr 26, 4:37 AM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Clay, Cloud, Doniphan, Douglas and 13 more	83 min
Apr 26, 6:23 AM CDT	Severe Thunderstorm Watch	SPC	Atchison, Doniphan, Johnson, Leavenworth, Miami, Wyandotte	7 hr
Apr 26, 7:18 AM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jefferson, Leavenworth, Wyandotte	87 min
Apr 26, 1:35 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Clay and 37 more	115 min
Apr 26, 2:12 PM CDT	Tornado Watch	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Clay and 46 more	7 hr
Apr 26, 6:14 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Leavenworth	61 min
Apr 26, 6:32 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Clay and 46 more	58 min
Apr 26, 1:53 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 35 more	2 hr
Apr 26, 2:32 PM CDT	Tornado Watch PDS	SPC	Alfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 47 more	9 hr
Apr 26, 5:13 PM CDT	Mesoscale Discussion	SPC	Blaine, Caddo, Canadian, Comanche, Garfield, Grant and 4 more	62 min

Nearby

Mesoscale Discussions in Oklahoma, 2016 Mesoscale Discussions in Kansas, 2016 Every mesoscale discussion in 2016

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.