Alert archive / Oklahoma / Mesoscale Discussions in 2006

Mesoscale Discussion 720

May 2, 200616 counties in Oklahoma; Fannin County, Grayson County, Texas

The Storm Prediction Center issued this mesoscale discussion at May 2, 2006, 1:45 PM CDT for 16 counties in Oklahoma; Fannin County, Grayson County, Texas. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: May 2, 2006, 1:45 PM CDT (18:45 UTC)
Expired: May 2, 2006, 3:15 PM CDT
In force: 90 min
Issued by: the Storm Prediction Center

Counties Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Coal County, OK, Garvin County, OK, Hughes County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Fannin County, TX, Grayson County, TX

The radar

The Norman radar (KTLX), 122 km from the middle of the area, began a volume at 18:48 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

Fort Sill, OK (KFSI), launched 12:00Z, 6.8 hours before the alert went out and 149 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: 186 J/kg
Mixed-layer CIN: -368 J/kg
Mixed-layer LCL: 1076 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 153 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 1, 7:51 PM CDT	Mesoscale Discussion	SPC	Carter, Cotton, Jefferson, Johnston, Love, Marshall and 3 more	84 min
May 2, 12:50 AM CDT	Mesoscale Discussion	SPC	Adair, Carter, Cherokee, Cleveland, Coal, Creek and 21 more	115 min
May 2, 1:02 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Atoka, Carter, Cherokee, Cleveland, Coal and 28 more	9 hr
May 2, 1:55 AM CDT	Severe Thunderstorm Watch	SPC	Bryan, Cotton, Jefferson, Stephens	8 hr
May 2, 3:52 AM CDT	Mesoscale Discussion	SPC	Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 32 more	113 min
May 2, 7:38 AM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Cotton and 13 more	97 min
May 2, 2:22 PM CDT	Mesoscale Discussion	SPC	Beaver, Beckham, Custer, Dewey, Ellis, Greer and 6 more	23 min
May 2, 2:39 PM CDT	Tornado Watch	SPC	Beckham, Ellis, Greer, Harmon, Jackson, Roger Mills	8 hr
May 2, 5:26 PM CDT	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Comanche, Cotton, Custer and 10 more	94 min
May 2, 5:42 PM CDT	Tornado Watch	SPC	Alfalfa, Blaine, Caddo, Comanche, Cotton, Custer and 8 more	5 hr
May 2, 6:30 PM CDT	Mesoscale Discussion	SPC	Beaver, Beckham, Blaine, Caddo, Carter, Comanche and 16 more	90 min
May 2, 3:17 PM CDT	Mesoscale Discussion	SPC	Austin, Bastrop, Blanco, Brazos, Burleson, Burnet and 25 more	118 min

Nearby

Mesoscale Discussions in Oklahoma, 2006 Mesoscale Discussions in Texas, 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.