Alert archive / Georgia / Mesoscale Discussions in 2023

Mesoscale Discussion 366

March 26, 202323 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Mar 26, 2023, 9:30 PM EDT for 23 counties in Georgia. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: Mar 26, 2023, 9:30 PM EDT (01:30 UTC)
Expired: Mar 26, 2023, 10:30 PM EDT
In force: 60 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 90

All 23 counties

Barrow County, GA, Butts County, GA, Carroll County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, DeKalb County, GA, Douglas County, GA, Fayette County, GA, Fulton County, GA, Gwinnett County, GA, Heard County, GA, Henry County, GA, Jasper County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Rockdale County, GA, Spalding County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 40 km from the middle of the area, began a volume at 01:34 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 00:00Z, 1.5 hours before the alert went out and 34 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2023 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 579 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 3.7
Supercell composite: 15.1

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.

Issued	Product	Office	Counties	Lasted
Mar 26, 8:15 PM EDT	Severe Thunderstorm Watch	SPC	Baldwin, Barrow, Bibb, Bleckley, Butts, Carroll and 45 more	7 hr
Mar 26, 11:06 PM EDT	Mesoscale Discussion	SPC	Baldwin, Bibb, Bleckley, Chattahoochee, Crawford, Harris and 17 more	114 min
Mar 26, 11:59 PM EDT	Mesoscale Discussion	SPC	Clarke, Columbia, Greene, Hancock, Lincoln, McDuffie and 6 more	2 hr
Mar 27, 4:04 AM EDT	Mesoscale Discussion	SPC	Muscogee	116 min
Mar 27, 6:28 AM EDT	Mesoscale Discussion	SPC	Bibb, Butts, Crawford, Harris, Heard, Jasper and 9 more	62 min
Mar 27, 7:29 AM EDT	Tornado Watch	SPC	Baldwin, Bibb, Bleckley, Crawford, Dodge, Dooly and 19 more	4 hr
Mar 27, 9:55 AM EDT	Mesoscale Discussion	SPC	Ben Hill, Bleckley, Calhoun, Candler, Chattahoochee, Clay and 36 more	2 hr
Mar 27, 11:02 AM EDT	Severe Thunderstorm Watch	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 65 more	7 hr
Mar 27, 1:13 PM EDT	Mesoscale Discussion	SPC	Appling, Bacon, Baker, Ben Hill, Bleckley, Bryan and 45 more	2 hr
Mar 27, 4:11 PM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 31 more	2 hr

Nearby

Mesoscale Discussions in Georgia, 2023 Every mesoscale discussion in 2023

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.