Alert archive / Oklahoma / Mesoscale Discussions in 2006

Mesoscale Discussion 201

March 8, 200630 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Mar 8, 2006, 11:44 PM CST for 30 counties in Oklahoma. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Mar 8, 2006, 11:44 PM CST (05:44 UTC)
Expired: Mar 9, 2006, 1:15 AM CST
In force: 91 min
Issued by: the Storm Prediction Center

All 30 counties

Caddo County, OK, Canadian County, OK, Cleveland County, OK, Creek County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Hughes County, OK, Kay County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, McClain County, OK, McIntosh County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Norman radar (KTLX), 28 km from the middle of the area, began a volume at 05:47 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 46Mar 9, 1:15 AM CST

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 5.7 hours before the alert went out and 43 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: 727 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1304 m above ground
0-6 km bulk shear: 84 kt
0-1 km storm-relative helicity: 208 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.6

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 8, 8:22 PM CST	Mesoscale Discussion	SPC	Alfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 49 more	53 min
Mar 8, 8:26 PM CST	Severe Thunderstorm Watch	SPC	Caddo, Canadian, Cleveland, Creek, Garfield, Grady and 24 more	5 hr
Mar 8, 10:51 PM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Comanche and 11 more	24 min
Mar 8, 11:42 PM CST	Tornado Watch	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Comanche and 14 more	6 hr
Mar 9, 1:14 AM CST	Severe Thunderstorm Watch	SPC	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 16 more	6 hr
Mar 9, 1:57 AM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Haskell and 14 more	63 min
Mar 9, 5:48 AM CST	Tornado Watch	SPC	McCurtain	6 hr
Mar 9, 6:10 AM CST	Mesoscale Discussion	SPC	Adair, Cherokee, Haskell, Latimer, LeFlore, Sequoyah	95 min
Mar 9, 10:34 AM CST	Mesoscale Discussion	SPC	Adair, Cherokee, Delaware, LeFlore, McCurtain, Ottawa and 1 more	116 min
Mar 9, 12:30 PM CST	Severe Thunderstorm Watch	SPC	Adair, Cherokee, Haskell, Latimer, LeFlore, Muskogee and 2 more	6 hr

Nearby

Mesoscale Discussions in Oklahoma, 2006 Every mesoscale discussion in 2006

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.