Alert archive / Texas / Mesoscale Discussions in 2013

Mesoscale Discussion 116

February 6, 2013Brooks County, Kenedy County, Kleberg County, Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 6, 2013, 1:25 PM CST for Brooks County, Kenedy County, Kleberg County, Texas. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Feb 6, 2013, 1:25 PM CST (19:25 UTC)
Expired
Feb 6, 2013, 3:00 PM CST
In force
95 min
Issued by
the Storm Prediction Center
Chance of a watch
20%

Counties Brooks County, TX, Kenedy County, TX, Kleberg County, TX

The radar

The Corpus Christi radar (KCRP), 92 km from the middle of the area, began a volume at 19:29 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 12:00Z, 7.4 hours before the alert went out and 98 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-pSkew-T log-p diagram, Corpus Christi, TX at 12:00Z on 2013-02-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 990 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2013-02-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
990 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
467 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
249 m²/s²
Significant tornado parameter
0.6
Supercell composite
2.3

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.

IssuedProductOfficeCountiesLasted
Feb 5, 9:50 PM CSTMesoscale DiscussionSPCJim Hogg, Starr, Zapata115 min
Feb 6, 6:48 AM CSTMesoscale DiscussionSPCAransas, Bee, Duval, Jim Wells, Live Oak, McMullen and 3 more87 min

Nearby

Mesoscale Discussions in Texas, 2013Every mesoscale discussion in 2013

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.