Alert archive / Alabama / Mesoscale Discussions in 2013

Mesoscale Discussion 145

February 10, 20138 counties in Alabama; Santa Rosa County, Florida

The Storm Prediction Center issued this mesoscale discussion at Feb 10, 2013, 6:05 PM CST for 8 counties in Alabama; Santa Rosa County, Florida. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
Feb 10, 2013, 6:05 PM CST (00:05 UTC)
Expired
Feb 10, 2013, 7:30 PM CST
In force
85 min
Issued by
the Storm Prediction Center

Counties Barbour County, AL, Bullock County, AL, Butler County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Pike County, AL, Santa Rosa County, FL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.1 hours before the alert went out and 198 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, Birmingham, AL at 00:00Z on 2013-02-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 14 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, Birmingham, AL at 00:00Z on 2013-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -133 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
14 J/kg
Mixed-layer CIN
-278 J/kg
Mixed-layer LCL
607 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-133 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 10, 6:23 PM CSTMesoscale DiscussionSPCBullock, Butler, Choctaw, Clarke, Conecuh, Crenshaw and 7 more97 min
Feb 10, 9:32 PM CSTMesoscale DiscussionSPCButler, Clarke, Coffee, Conecuh, Covington, Dale and 7 more88 min
Feb 11, 1:55 AM CSTMesoscale DiscussionSPCButler, Clarke, Conecuh, Monroe, Washington, Wilcox95 min
Feb 11, 11:58 AM CSTMesoscale DiscussionSPCGeneva, Houston92 min

Nearby

Mesoscale Discussions in Alabama, 2013Mesoscale Discussions in Florida, 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.