Alert archive / Oklahoma / Mesoscale Discussions in 2008

Mesoscale Discussion 1114

May 31, 20084 states

The Storm Prediction Center issued this mesoscale discussion at May 31, 2008, 10:01 AM CDT for 4 states. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued: May 31, 2008, 10:01 AM CDT (15:01 UTC)
Expired: May 31, 2008, 11:00 AM CDT
In force: 59 min
Issued by: the Storm Prediction Center

All 25 counties

Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR, Chautauqua County, KS, Cherokee County, KS, Elk County, KS, Labette County, KS, Montgomery County, KS, Wilson County, KS, Barry County, MO, McDonald County, MO, Newton County, MO, Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 60 km from the middle of the area, began a volume at 14:57 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 12:00Z, 3.0 hours before the alert went out and 142 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: 1870 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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.

Issued	Product	Office	Counties	Lasted
May 31, 7:26 AM CDT	Mesoscale Discussion	SPC	Benton	2 hr
May 31, 8:53 AM CDT	Severe Thunderstorm Watch	SPC	Benton, Boone, Carroll, Madison, Marion, Newton and 2 more	5 hr
May 30, 7:39 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Chautauqua, Cherokee, Cowley and 8 more	66 min
May 30, 9:16 PM CDT	Mesoscale Discussion	SPC	Chautauqua, Cherokee, Crawford, Labette, Montgomery, Neosho	29 min
May 31, 4:23 AM CDT	Mesoscale Discussion	SPC	Butler, Chautauqua, Cowley, Elk, Greenwood, Harper and 14 more	3 hr
May 31, 4:52 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Barber, Barton, Bourbon, Butler, Chase and 27 more	9 hr
May 31, 3:48 PM CDT	Mesoscale Discussion	SPC	Barber, Comanche, Harper, Sumner	117 min
May 31, 4:29 PM CDT	Mesoscale Discussion	SPC	Anderson, Bourbon, Douglas, Franklin, Johnson, Leavenworth and 3 more	91 min
May 31, 6:22 PM CDT	Tornado Watch	SPC	Chautauqua, Cowley, Elk, Harper, Labette, Montgomery and 3 more	7 hr
May 30, 9:58 PM CDT	Severe Thunderstorm Watch	SPC	Barry, Benton, Camden, Cedar, Christian, Cole and 34 more	5 hr
May 30, 11:35 PM CDT	Mesoscale Discussion	SPC	Barry, Camden, Christian, Crawford, Dade, Dallas and 34 more	55 min

Nearby

Mesoscale Discussions in Oklahoma, 2008 Mesoscale Discussions in Kansas, 2008 Mesoscale Discussions in Arkansas, 2008 Every mesoscale discussion in 2008

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.