Alert archive / Florida / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 89, NWS Jacksonville, FL

June 23, 2026Baker County, Duval County, Nassau County, Florida; Charlton County, Ware County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 23, 2026, 4:26 PM EDT for Baker County, Duval County, Nassau County, Florida; Charlton County, Ware County, Georgia. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 23, 2026, 4:26 PM EDT (20:26 UTC)
Expired
Jun 23, 2026, 5:00 PM EDT
In force
34 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Baker County, FL, Duval County, FL, Nassau County, FL, Charlton County, GA, Ware County, GA

The radar

The Jacksonville radar (KJAX), 37 km from the middle of the area, began a volume at 20:28 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

Charleston AFB, SC (KCHS), launched 12:00Z, 8.4 hours before the alert went out and 319 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, Charleston AFB, SC at 12:00Z on 2026-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1503 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, Charleston AFB, SC at 12:00Z on 2026-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.193958Sfc1 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
1503 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
847 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 7:42 PM EDT, 20 hours 44 minutes earlier.

Area forecast discussion, Jun 22, 7:42 PM EDT, 20 hours 44 minutes before
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The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 22, 8:29 PM EDTSpecial Marine WarningJAX61 min
Jun 23, 11:55 AM EDTSpecial Weather StatementJAXFlagler50 min
Jun 23, 3:09 PM EDTSpecial Weather StatementJAXHamilton51 min
Jun 23, 3:39 PM EDTSpecial Weather StatementJAXSuwannee36 min
Jun 23, 4:10 PM EDTSpecial Weather StatementJAXColumbia35 min
Jun 23, 4:19 PM EDTSpecial Weather StatementJAXSuwannee26 min
Jun 23, 4:21 PM EDTSpecial Weather StatementJAXBaker, Nassau39 min
Jun 23, 4:39 PM EDTSevere Thunderstorm WarningJAXNassau36 min
Jun 23, 4:45 PM EDTSpecial Weather StatementJAXBaker, Columbia, Union45 min
Jun 23, 4:55 PM EDTSpecial Marine WarningJAX95 min
Jun 23, 4:59 PM EDTSevere Thunderstorm WarningJAXDuval, Nassau, Saint Johns31 min
Jun 23, 5:11 PM EDTSevere Thunderstorm WarningJAXAlachua, Baker, Bradford, Clay, Columbia, Union34 min
Jun 23, 5:28 PM EDTSevere Thunderstorm WarningJAXDuval, Nassau32 min
Jun 23, 5:45 PM EDTSpecial Weather StatementJAXBradford, Clay45 min
Jun 23, 5:49 PM EDTSpecial Marine WarningJAX56 min
Jun 23, 6:01 PM EDTSpecial Weather StatementJAXPutnam, Saint Johns29 min
Jun 23, 6:05 PM EDTSpecial Marine WarningJAX85 min
Jun 23, 6:29 PM EDTSpecial Weather StatementJAXAlachua, Flagler, Marion, Putnam46 min
Jun 23, 6:37 PM EDTSpecial Marine WarningJAX85 min
Jun 23, 6:39 PM EDTSpecial Weather StatementJAXSuwannee51 min
Jun 23, 6:45 PM EDTSpecial Marine WarningJAX60 min
Jun 23, 7:25 PM EDTSpecial Marine WarningJAX37 min
Jun 23, 7:36 PM EDTSpecial Weather StatementJAXSuwannee24 min
Jun 22, 9:11 PM EDTRiver Flood WarningJAXPierce, Ware5 days
Jun 23, 3:28 PM EDTSpecial Weather StatementJAXClinch32 min
Jun 23, 3:33 PM EDTSpecial Weather StatementJAXWare27 min
Jun 23, 3:59 PM EDTSpecial Weather StatementJAXClinch31 min
Jun 23, 4:00 PM EDTSpecial Weather StatementJAXCamden30 min

Nearby

Severe Thunderstorm Warnings in Florida, 2026Severe Thunderstorm Warnings in Georgia, 2026Every severe thunderstorm warning in 2026

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.