Alert archive / Oklahoma / Mesoscale Discussions in 2003

Mesoscale Discussion 326

March 24, 200323 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Mar 24, 2003, 8:45 PM CST for 23 counties in Oklahoma. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Mar 24, 2003, 8:45 PM CST (02:45 UTC)
Expired: Mar 24, 2003, 11:45 PM CST
In force: 3 hr
Issued by: the Storm Prediction Center

All 23 counties

Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Creek County, OK, Grady County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, McClain County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Tillman County, OK, Tulsa County, OK, Wagoner County, OK, Washita County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.8 hours before the alert went out and 35 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: 873 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 1843 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 216 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 8.4

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
Mar 25, 2:33 AM CST	Mesoscale Discussion	SPC	Alfalfa, Craig, Garfield, Grant, Kay, Major and 8 more	3 hr
Mar 25, 1:39 PM CST	Mesoscale Discussion	SPC	Choctaw, McCurtain	3 hr
Mar 25, 3:05 PM CST	Severe Thunderstorm Watch	SPC	Choctaw, Latimer, LeFlore, McCurtain, Pushmataha	6 hr

Nearby

Mesoscale Discussions in Oklahoma, 2003 Every mesoscale discussion in 2003

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.