Alert archive / Oklahoma / Mesoscale Discussions in 2006

Mesoscale Discussion 822

May 10, 200612 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 10, 2006, 5:18 AM CDT for 12 counties in Oklahoma. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: May 10, 2006, 5:18 AM CDT (10:18 UTC)
Expired: May 10, 2006, 6:45 AM CDT
In force: 87 min
Issued by: the Storm Prediction Center

Counties Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Cotton County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Pushmataha County, OK, Stephens County, OK

The radar

The Norman radar (KTLX), 135 km from the middle of the area, began a volume at 10:19 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, 10.3 hours before the alert went out and 125 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: 3059 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 905 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 313 m²/s²
Significant tornado parameter: 4.2
Supercell composite: 16.6

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
May 9, 8:06 PM CDT	Mesoscale Discussion	SPC	Beckham, Caddo, Canadian, Comanche, Cotton, Custer and 9 more	84 min
May 9, 9:18 PM CDT	Tornado Watch	SPC	McCurtain	6 hr
May 9, 9:38 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Caddo, Carter, Choctaw, Cleveland and 25 more	97 min
May 9, 10:46 PM CDT	Severe Thunderstorm Watch	SPC	Atoka, Bryan, Caddo, Canadian, Carter, Choctaw and 22 more	7 hr
May 10, 4:01 AM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Caddo, Carter, Choctaw, Cleveland and 28 more	89 min
May 10, 4:24 AM CDT	Severe Thunderstorm Watch	SPC	McCurtain	8 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.