Alert archive / Alabama / Mesoscale Discussions in 2016

Mesoscale Discussion 134

February 23, 201619 counties in Alabama; 6 counties in Florida; 10 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Feb 23, 2016, 9:07 PM CST for 19 counties in Alabama; 6 counties in Florida; 10 counties in Georgia. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued
Feb 23, 2016, 9:07 PM CST (03:07 UTC)
Expired
Feb 23, 2016, 10:00 PM CST
In force
53 min
Issued by
the Storm Prediction Center
All 35 counties

Barbour County, AL, Bullock County, AL, Chambers County, AL, Clay County, AL, Coffee County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Elmore County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Tallapoosa County, AL, Bay County, FL, Holmes County, FL, Jackson County, FL, Okaloosa County, FL, Walton County, FL, Washington County, FL, Chattahoochee County, GA, Clay County, GA, Early County, GA, Harris County, GA, Heard County, GA, Muscogee County, GA, Quitman County, GA, Randolph County, GA, Stewart County, GA, Troup County, GA

The radar

The Ft Rucker radar (KEOX), 56 km from the middle of the area, began a volume at 03:07 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 3.1 hours before the alert went out and 173 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 2016-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 37 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 2016-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 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
37 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
626 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 23, 7:23 PM CSTMesoscale DiscussionSPCBibb, Fayette, Greene, Hale, Marengo, Pickens and 2 more37 min
Feb 23, 8:08 PM CSTTornado WatchSPCButler, Coffee, Conecuh, Covington, Crenshaw, Dale and 5 more9 hr
Feb 23, 6:51 PM CSTMesoscale DiscussionSPCEscambia54 min
Feb 24, 12:44 AM CSTMesoscale DiscussionSPCFranklin, Gadsden, Hamilton, Jefferson, Leon, Liberty and 2 more2 hr
Feb 24, 2:58 AM CSTTornado WatchSPCAlachua, Baker, Bradford, Citrus, Columbia, Gilchrist and 12 more6 hr
Feb 24, 5:48 AM CSTMesoscale DiscussionSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 7 more87 min
Feb 24, 7:36 AM CSTMesoscale DiscussionSPCCharlotte, Clay, DeSoto, Hardee, Hernando, Highlands and 11 more84 min
Feb 24, 10:42 AM CSTMesoscale DiscussionSPCBrevard, Charlotte, Collier, DeSoto, Glades, Hardee and 18 more63 min
Feb 23, 11:14 PM CSTTornado WatchSPCBibb, Bleckley, Chattahoochee, Crawford, Crisp, Dodge and 27 more6 hr
Feb 24, 7:14 AM CSTMesoscale DiscussionSPCBanks, Barrow, Dawson, Fannin, Forsyth, Franklin and 12 more2 hr

Nearby

Mesoscale Discussions in Alabama, 2016Mesoscale Discussions in Georgia, 2016Mesoscale Discussions in Florida, 2016Every mesoscale discussion in 2016

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.