Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 245

February 16, 200817 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 16, 2008, 6:48 PM CST for 17 counties in Texas. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Feb 16, 2008, 6:48 PM CST (00:48 UTC)
Expired: Feb 16, 2008, 7:45 PM CST
In force: 57 min
Issued by: the Storm Prediction Center

Counties Aransas County, TX, Bee County, TX, Brooks County, TX, Cameron County, TX, Duval County, TX, Hidalgo County, TX, Jim Hogg County, TX, Jim Wells County, TX, Kenedy County, TX, Kleberg County, TX, Live Oak County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Starr County, TX, Willacy County, TX, Zapata County, TX

The radar

The Corpus Christi radar (KCRP), 119 km from the middle of the area, began a volume at 00:50 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

Corpus Christi, TX (KCRP), launched 00:00Z, 0.8 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 711 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 375 m²/s²
0-3 km storm-relative helicity: 654 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.9

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
Feb 16, 7:18 PM CST	Mesoscale Discussion	SPC	Chambers, Hardin, Jasper, Jefferson, Liberty, Newton and 4 more	87 min
Feb 16, 8:25 PM CST	Tornado Watch	SPC	Brazoria, Chambers, Fort Bend, Galveston, Hardin, Harris and 7 more	6 hr
Feb 16, 10:41 PM CST	Mesoscale Discussion	SPC	Jefferson, Orange	94 min

Nearby

Mesoscale Discussions in Texas, 2008 Every mesoscale discussion in 2008

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.