Alert archive / Oklahoma / Mesoscale Discussions in 2015

Mesoscale Discussion 592

May 10, 201530 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 10, 2015, 3:22 PM CDT for 30 counties in Oklahoma. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: May 10, 2015, 3:22 PM CDT (20:22 UTC)
Expired: May 10, 2015, 4:15 PM CDT
In force: 53 min
Issued by: the Storm Prediction Center

All 30 counties

Atoka County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Creek County, OK, Garvin County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, Lincoln County, OK, Marshall County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Norman radar (KTLX), 76 km from the middle of the area, began a volume at 20:24 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, 8.4 hours before the alert went out and 82 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: 1564 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 614 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 11.8

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 9, 7:49 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Jefferson, Johnston and 4 more	56 min
May 10, 4:20 AM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Cotton and 9 more	55 min
May 10, 6:44 AM CDT	Mesoscale Discussion	SPC	Bryan, Choctaw, McCurtain, Pushmataha	2 hr
May 10, 8:56 AM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Delaware, Haskell, Latimer, LeFlore and 8 more	2 hr
May 10, 9:28 AM CDT	Tornado Watch	SPC	Adair, Cherokee, Choctaw, Craig, Delaware, Haskell and 11 more	6 hr
May 10, 10:19 AM CDT	Tornado Watch	SPC	McCurtain	13 hr
May 10, 12:33 PM CDT	Mesoscale Discussion	SPC	Carter, Cleveland, Cotton, Garvin, Grady, Jefferson and 12 more	2 hr
May 10, 12:58 PM CDT	Tornado Watch	SPC	Atoka, Bryan, Carter, Choctaw, Cleveland, Coal and 41 more	10 hr
May 10, 5:39 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Cleveland, Creek and 12 more	96 min
May 10, 6:15 PM CDT	Mesoscale Discussion	SPC	Bryan, Choctaw, McCurtain	90 min

Nearby

Mesoscale Discussions in Oklahoma, 2015 Every mesoscale discussion in 2015

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.