Alert archive / Florida / Mesoscale Discussions in 2025

Mesoscale Discussion 920

May 21, 202515 counties in Florida; 15 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at May 21, 2025, 11:33 AM EDT for 15 counties in Florida; 15 counties in Georgia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 21, 2025, 11:33 AM EDT (15:33 UTC)
Expired: May 21, 2025, 2:00 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

All 30 counties

Baker County, FL, Bay County, FL, Calhoun County, FL, Columbia County, FL, Gadsden County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Taylor County, FL, Wakulla County, FL, Atkinson County, GA, Brantley County, GA, Brooks County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Cook County, GA, Decatur County, GA, Echols County, GA, Grady County, GA, Lanier County, GA, Lowndes County, GA, Pierce County, GA, Thomas County, GA, Ware County, GA

The radar

The Tallahassee radar (KTLH), 66 km from the middle of the area, began a volume at 15:37 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 text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 21, 6:14 PM EDT	Mesoscale Discussion	SPC	Baker, Columbia, Hamilton, Suwannee	91 min
May 20, 9:14 PM EDT	Mesoscale Discussion	SPC	Bartow, Catoosa, Chattooga, Cherokee, Dade, Dawson and 9 more	2 hr
May 21, 12:25 AM EDT	Mesoscale Discussion	SPC	Bartow, Carroll, Cherokee, Cobb, Dawson, Douglas and 6 more	2 hr
May 21, 4:36 AM EDT	Mesoscale Discussion	SPC	Baldwin, Bibb, Bleckley, Burke, Butts, Candler and 37 more	84 min
May 21, 5:17 AM EDT	Mesoscale Discussion	SPC	Chattahoochee, Dooly, Houston, Macon, Marion, Muscogee and 7 more	58 min

Nearby

Mesoscale Discussions in Florida, 2025 Mesoscale Discussions in Georgia, 2025 Every 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; radar from the NEXRAD Level II archive.