Alert archive / Oklahoma / Mesoscale Discussions in 2005

Mesoscale Discussion 543

April 10, 200524 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 10, 2005, 7:32 PM CDT for 24 counties in Oklahoma. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Apr 10, 2005, 7:32 PM CDT (00:32 UTC)
Expired: Apr 10, 2005, 9:00 PM CDT
In force: 88 min
Issued by: the Storm Prediction Center

All 24 counties

Atoka County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Creek County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Johnston County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK

The radar

The Norman radar (KTLX), 50 km from the middle of the area, began a volume at 00:30 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 00:00Z, 0.5 hours before the alert went out and 54 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: 991 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 992 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.1

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
Apr 10, 8:53 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Delaware, Haskell, Latimer and 9 more	2 hr
Apr 10, 9:15 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Cherokee, Craig, Delaware, Haskell, Latimer and 10 more	7 hr
Apr 10, 9:23 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Garfield, Grant, Kay, Noble, Osage and 1 more	2 hr
Apr 11, 1:23 AM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Delaware, Haskell, Latimer and 10 more	67 min
Apr 11, 3:23 AM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Delaware, Haskell, Latimer, LeFlore and 7 more	67 min
Apr 11, 2:01 PM CDT	Mesoscale Discussion	SPC	Adair, Delaware, Ottawa	89 min

Nearby

Mesoscale Discussions in Oklahoma, 2005 Every mesoscale discussion in 2005

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.