Alert archive / Texas / Mesoscale Discussions in 2014

Mesoscale Discussion 186

March 15, 201410 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 15, 2014, 9:51 PM CDT for 10 counties in Texas. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued
Mar 15, 2014, 9:51 PM CDT (02:51 UTC)
Expired
Mar 15, 2014, 11:15 PM CDT
In force
84 min
Issued by
the Storm Prediction Center
Chance of a watch
20%

Counties Falls County, TX, Houston County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, McLennan County, TX, Robertson County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 2.9 hours before the alert went out and 196 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, Fort Worth, TX at 00:00Z on 2014-03-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 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, Fort Worth, TX at 00:00Z on 2014-03-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
20 J/kg
Mixed-layer CIN
-182 J/kg
Mixed-layer LCL
743 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
63 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.

IssuedProductOfficeCountiesLasted
Mar 16, 5:46 AM CDTMesoscale DiscussionSPCAtascosa, Austin, Bee, Chambers, Colorado, DeWitt and 28 more119 min

Nearby

Mesoscale Discussions in Texas, 2014Every mesoscale discussion in 2014

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.