Alert archive / Georgia / Mesoscale Discussions in 2025

Mesoscale Discussion 975

May 25, 2025DeKalb County, Jackson County, Alabama; 13 counties in Georgia; 10 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at May 25, 2025, 4:52 PM CDT for DeKalb County, Jackson County, Alabama; 13 counties in Georgia; 10 counties in Tennessee. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
May 25, 2025, 4:52 PM CDT (21:52 UTC)
Expired
May 25, 2025, 6:15 PM CDT
In force
83 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 324
All 25 counties

DeKalb County, AL, Jackson County, AL, Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Dade County, GA, Fannin County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Murray County, GA, Pickens County, GA, Walker County, GA, Whitfield County, GA, Bledsoe County, TN, Bradley County, TN, Grundy County, TN, Hamilton County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Polk County, TN, Rhea County, TN, Sequatchie County, TN

The radar

The Northeast Alabama radar (KHTX), 83 km from the middle of the area, began a volume at 21:56 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.9 hours before the alert went out and 180 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, Peachtre/Fal Fld, GA at 12:00Z on 2025-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Peachtre/Fal Fld, GA at 12:00Z on 2025-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.1939Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
656 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
109 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
May 25, 1:32 PM CDTMesoscale DiscussionSPCColbert, Fayette, Franklin, Lamar, Lauderdale, Lawrence and 5 more118 min
May 25, 3:24 PM CDTSevere Thunderstorm WatchSPCBlount, Cherokee, Colbert, Cullman, DeKalb, Etowah and 15 more8 hr
May 25, 1:50 PM CDTMesoscale DiscussionSPCCatoosa85 min
May 25, 2:15 PM CDTMesoscale DiscussionSPCBrantley, Bryan, Camden, Charlton, Chatham, Evans and 6 more2 hr
May 25, 2:07 PM CDTSevere Thunderstorm WatchSPCFayette, Hardeman, McNairy, Shelby8 hr
May 25, 3:33 PM CDTMesoscale DiscussionSPCFayette, Hardeman, McNairy, Shelby87 min

Nearby

Mesoscale Discussions in Georgia, 2025Mesoscale Discussions in Tennessee, 2025Mesoscale Discussions in Alabama, 2025Every mesoscale discussion in 2025

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.