Alert archive / Florida / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 155, NWS Jacksonville, FL

June 28, 2024Nassau County, Florida; Camden County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 28, 2024, 3:09 PM EDT for Nassau County, Florida; Camden County, Georgia. It was in force for 51 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 28, 2024, 3:09 PM EDT (19:09 UTC)
Expired: Jun 28, 2024, 4:00 PM EDT
In force: 51 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Nassau County, FL, Camden County, GA

The radar

The Jacksonville radar (KJAX), 31 km from the middle of the area, began a volume at 19:12 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

Jacksonville, FL (KJAX), launched 12:00Z, 7.2 hours before the alert went out and 30 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: 1089 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -67 m²/s²
0-3 km storm-relative helicity: -83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 28, 2:22 PM EDT, 47 minutes earlier.

Area forecast discussion, Jun 28, 2:22 PM EDT, 47 minutes before

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In the hours before

Special weather statement, Jun 28, 2:40 PM EDT, 29 minutes before

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Special weather statement, Jun 28, 2:42 PM EDT, 27 minutes before

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Special weather statement, Jun 28, 2:52 PM EDT, 17 minutes before

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Special weather statement, Jun 28, 2:55 PM EDT, 14 minutes before

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Local storm report, Jun 28, 3:01 PM EDT, 8 minutes before

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Local storm report, Jun 28, 3:03 PM EDT, 6 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 11:46 AM EDT	Special Weather Statement	JAX	Putnam	44 min
Jun 28, 2:03 PM EDT	Special Marine Warning	JAX		57 min
Jun 28, 2:05 PM EDT	Special Weather Statement	JAX	Duval	25 min
Jun 28, 2:16 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Saint Johns	29 min
Jun 28, 2:21 PM EDT	Tornado Warning	JAX	Duval	24 min
Jun 28, 2:40 PM EDT	Special Weather Statement	JAX	Hamilton	35 min
Jun 28, 2:42 PM EDT	Special Weather Statement	JAX	Alachua	33 min
Jun 28, 2:52 PM EDT	Special Weather Statement	JAX	Nassau	53 min
Jun 28, 3:00 PM EDT	Special Marine Warning	JAX		90 min
Jun 28, 3:43 PM EDT	Areal Flood Advisory	JAX	Nassau	3 hr
Jun 28, 3:44 PM EDT	Special Weather Statement	JAX	Putnam	46 min
Jun 28, 3:51 PM EDT	Areal Flood Advisory	JAX	Alachua, Gilchrist	3 hr
Jun 28, 4:04 PM EDT	Special Weather Statement	JAX	Marion	26 min
Jun 28, 4:22 PM EDT	Special Weather Statement	JAX	Baker, Bradford, Union	38 min
Jun 28, 4:28 PM EDT	Areal Flood Advisory	JAX	Marion	3 hr
Jun 28, 4:36 PM EDT	Special Weather Statement	JAX	Marion	24 min
Jun 28, 4:39 PM EDT	Areal Flood Warning	JAX	Marion	3 hr
Jun 28, 4:51 PM EDT	Special Weather Statement	JAX	Flagler	54 min
Jun 28, 5:01 PM EDT	Special Weather Statement	JAX	Clay	44 min
Jun 28, 5:10 PM EDT	Special Weather Statement	JAX	Marion	50 min
Jun 28, 5:17 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Duval, Saint Johns	24 min
Jun 28, 5:19 PM EDT	Severe Thunderstorm Warning	JAX	Marion	41 min
Jun 28, 5:23 PM EDT	Areal Flood Advisory	JAX	Marion	3 hr
Jun 28, 5:31 PM EDT	Special Marine Warning	JAX		89 min
Jun 28, 5:43 PM EDT	Special Weather Statement	JAX	Clay	47 min
Jun 28, 5:56 PM EDT	Special Weather Statement	JAX	Marion	64 min
Jun 28, 6:00 PM EDT	Special Marine Warning	JAX		60 min
Jun 28, 6:02 PM EDT	Special Weather Statement	JAX	Flagler	43 min
Jun 28, 6:08 PM EDT	Areal Flood Warning	JAX	Marion	3 hr
Jun 28, 6:15 PM EDT	Special Weather Statement	JAX	Saint Johns	45 min
Jun 28, 6:26 PM EDT	Areal Flood Advisory	JAX	Clay	3 hr
Jun 28, 2:55 PM EDT	Special Weather Statement	JAX	Brantley	50 min
Jun 28, 3:29 PM EDT	Severe Thunderstorm Warning	JAX	Camden, Glynn	46 min
Jun 28, 3:51 PM EDT	Special Weather Statement	JAX	Atkinson	39 min
Jun 28, 3:56 PM EDT	Severe Thunderstorm Warning	JAX	Brantley, Camden, Glynn, Wayne	46 min
Jun 28, 4:00 PM EDT	Areal Flood Advisory	JAX	Clinch, Ware	3 hr
Jun 28, 4:55 PM EDT	Special Weather Statement	JAX	Bacon, Coffee, Jeff Davis	50 min
Jun 28, 5:37 PM EDT	Special Weather Statement	JAX	Appling	38 min
Jun 28, 6:18 PM EDT	Areal Flood Advisory	JAX	Appling, Jeff Davis	3 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2024 Severe Thunderstorm Warnings in Georgia, 2024 Every severe thunderstorm warning in 2024

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.