Alert archive / Texas / Mesoscale Discussions in 2009

Mesoscale Discussion 926

June 2, 2009Roger Mills County, Oklahoma; Gray County, Hemphill County, Wheeler County, Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 2, 2009, 4:05 PM CDT for Roger Mills County, Oklahoma; Gray County, Hemphill County, Wheeler County, Texas. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Jun 2, 2009, 4:05 PM CDT (21:05 UTC)
Expired: Jun 2, 2009, 5:00 PM CDT
In force: 55 min
Issued by: the Storm Prediction Center

Counties Roger Mills County, OK, Gray County, TX, Hemphill County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 140 km from the middle of the area, began a volume at 21:06 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

Dodge City, (KDDC), launched 12:00Z, 9.1 hours before the alert went out and 236 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: 21 J/kg
Mixed-layer CIN: -339 J/kg
Mixed-layer LCL: 1411 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jun 2, 3:32 AM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Foard, King, Knox, Throckmorton and 1 more	118 min
Jun 2, 2:24 PM CDT	Mesoscale Discussion	SPC	Borden, Brown, Callahan, Cochran, Coke, Coleman and 27 more	66 min
Jun 2, 2:46 PM CDT	Tornado Watch	SPC	Andrews, Bailey, Borden, Brown, Callahan, Cochran and 47 more	7 hr
Jun 2, 5:16 PM CDT	Mesoscale Discussion	SPC	Borden, Brown, Burnet, Callahan, Coke, Coleman and 36 more	89 min

Nearby

Mesoscale Discussions in Texas, 2009 Mesoscale Discussions in Oklahoma, 2009 Every mesoscale discussion in 2009

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.