Alert archive / Alabama / Mesoscale Discussions in 2022

Mesoscale Discussion 2039

December 14, 20225 counties in Alabama

The Storm Prediction Center issued this mesoscale discussion at Dec 14, 2022, 9:19 PM CST for 5 counties in Alabama. It was in force for 56 min.

The area

The outline as issued.

The facts

Issued
Dec 14, 2022, 9:19 PM CST (03:19 UTC)
Expired
Dec 14, 2022, 10:15 PM CST
In force
56 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 589

Counties Coffee County, AL, Crenshaw County, AL, Dale County, AL, Henry County, AL, Pike County, AL

The radar

The Ft Rucker radar (KEOX), 57 km from the middle of the area, began a volume at 03:19 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.3 hours before the alert went out and 218 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, Tallahassee Rgnl, FL at 00:00Z on 2022-12-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 172 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, Tallahassee Rgnl, FL at 00:00Z on 2022-12-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 square meters per square second.1939587897Sfc1 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
172 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
513 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
274 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

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
Dec 14, 6:24 PM CSTMesoscale DiscussionSPCClarke, Mobile, Monroe, Washington66 min
Dec 14, 7:03 PM CSTMesoscale DiscussionSPCCoffee, Covington, Dale, Geneva, Henry, Houston117 min
Dec 14, 11:28 PM CSTMesoscale DiscussionSPCHouston2 hr
Dec 15, 1:02 AM CSTTornado WatchSPCHenry, Houston7 hr

Nearby

Mesoscale Discussions in Alabama, 2022Every mesoscale discussion in 2022

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.