Alert archive / Florida / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 92, NWS Jacksonville, FL

April 11, 2024Flagler County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 11, 2024, 1:41 PM EDT for Flagler County, Florida. It was in force for 19 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: Apr 11, 2024, 1:41 PM EDT (17:41 UTC)
Expired: Apr 11, 2024, 2:00 PM EDT
In force: 19 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Flagler County, FL

The radar

The Jacksonville radar (KJAX), 119 km from the middle of the area, began a volume at 17:40 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 11, 7:32 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 5.7 hours before the alert went out and 121 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 847 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 184 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 Apr 11, 1:11 PM EDT, 30 minutes earlier.

Area forecast discussion, Apr 11, 1:11 PM EDT, 30 minutes before

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In the hours before

Special weather statement, Apr 11, 12:52 PM EDT, 49 minutes before

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Local storm report, Apr 11, 12:54 PM EDT, 47 minutes before

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Local storm report, Apr 11, 1:12 PM EDT, 29 minutes before

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Special weather statement, Apr 11, 1:13 PM EDT, 28 minutes before

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Special weather statement, Apr 11, 1:18 PM EDT, 23 minutes before

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Special weather statement, Apr 11, 1:31 PM EDT, 10 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
Apr 11, 4:22 AM EDT	Areal Flood Advisory	JAX	Hamilton	3 hr
Apr 11, 5:10 AM EDT	Areal Flood Warning	JAX	Hamilton	3 hr
Apr 11, 5:53 AM EDT	Special Weather Statement	JAX	Nassau	67 min
Apr 11, 6:11 AM EDT	Severe Thunderstorm Warning	JAX	Hamilton	49 min
Apr 11, 6:24 AM EDT	Special Marine Warning	JAX		66 min
Apr 11, 6:53 AM EDT	Severe Thunderstorm Warning	JAX	Hamilton, Suwannee	52 min
Apr 11, 7:24 AM EDT	Special Marine Warning	JAX		66 min
Apr 11, 7:24 AM EDT	Tornado Warning	JAX	Suwannee	21 min
Apr 11, 7:42 AM EDT	Tornado Warning	JAX	Suwannee	18 min
Apr 11, 7:58 AM EDT	Severe Thunderstorm Warning	JAX	Columbia, Hamilton, Suwannee	32 min
Apr 11, 8:04 AM EDT	Areal Flood Advisory	JAX	Columbia, Hamilton, Suwannee	3 hr
Apr 11, 8:27 AM EDT	Special Weather Statement	JAX	Baker, Columbia	33 min
Apr 11, 8:40 AM EDT	Areal Flood Advisory	JAX	Baker, Columbia, Hamilton, Suwannee	3 hr
Apr 11, 8:43 AM EDT	Special Marine Warning	JAX		47 min
Apr 11, 8:58 AM EDT	Special Weather Statement	JAX	Baker, Columbia, Gilchrist	17 min
Apr 11, 9:15 AM EDT	Special Weather Statement	JAX	Baker, Gilchrist	15 min
Apr 11, 9:31 AM EDT	Special Weather Statement	JAX	Gilchrist	14 min
Apr 11, 9:44 AM EDT	Special Weather Statement	JAX	Baker, Union	16 min
Apr 11, 9:46 AM EDT	River Flood Warning	JAX	Hamilton, Suwannee	47 hr
Apr 11, 9:46 AM EDT	Special Weather Statement	JAX	Gilchrist	14 min
Apr 11, 9:48 AM EDT	River Flood Warning	JAX	Columbia, Hamilton, Suwannee	36 hr
Apr 11, 9:49 AM EDT	Special Weather Statement	JAX	Nassau	11 min
Apr 11, 9:58 AM EDT	Special Weather Statement	JAX	Nassau	17 min
Apr 11, 10:05 AM EDT	Severe Thunderstorm Warning	JAX	Marion	25 min
Apr 11, 10:13 AM EDT	Special Weather Statement	JAX	Nassau	17 min
Apr 11, 10:23 AM EDT	Special Marine Warning	JAX		67 min
Apr 11, 10:24 AM EDT	Special Weather Statement	JAX	Marion	36 min
Apr 11, 10:26 AM EDT	Special Weather Statement	JAX	Nassau	19 min
Apr 11, 10:34 AM EDT	Special Weather Statement	JAX	Clay	26 min
Apr 11, 10:38 AM EDT	Special Weather Statement	JAX	Putnam	22 min
Apr 11, 10:53 AM EDT	Special Weather Statement	JAX	Duval	22 min
Apr 11, 10:57 AM EDT	Special Weather Statement	JAX	Clay	18 min
Apr 11, 11:05 AM EDT	Severe Thunderstorm Warning Considerable damage threat	JAX	Clay, Putnam, Saint Johns	25 min
Apr 11, 11:27 AM EDT	Severe Thunderstorm Warning Considerable damage threat	JAX	Clay, Saint Johns	18 min
Apr 11, 11:29 AM EDT	Tornado Warning	JAX	Clay, Saint Johns	16 min
Apr 11, 11:34 AM EDT	Severe Thunderstorm Warning Considerable damage threat	JAX	Marion	26 min
Apr 11, 11:36 AM EDT	Special Marine Warning	JAX		70 min
Apr 11, 11:41 AM EDT	Tornado Warning	JAX	Saint Johns	19 min
Apr 11, 11:54 AM EDT	Severe Thunderstorm Warning Considerable damage threat	JAX	Marion	21 min
Apr 11, 12:03 PM EDT	Special Weather Statement	JAX	Putnam	42 min
Apr 11, 12:04 PM EDT	Special Weather Statement	JAX	Putnam	41 min
Apr 11, 12:09 PM EDT	Special Weather Statement	JAX	Duval	21 min
Apr 11, 12:18 PM EDT	Severe Thunderstorm Warning	JAX	Flagler, Marion, Putnam	27 min
Apr 11, 12:20 PM EDT	Special Weather Statement	JAX	Marion	25 min
Apr 11, 12:22 PM EDT	Special Weather Statement	JAX	Clay	23 min
Apr 11, 12:40 PM EDT	Tornado Warning	JAX	Flagler, Putnam	35 min
Apr 11, 12:45 PM EDT	Special Marine Warning	JAX		60 min
Apr 11, 12:49 PM EDT	Special Weather Statement	JAX	Saint Johns	26 min
Apr 11, 12:52 PM EDT	Special Weather Statement	JAX	Marion, Putnam	23 min
Apr 11, 12:59 PM EDT	Severe Thunderstorm Warning Considerable damage threat	JAX	Flagler	16 min
Apr 11, 1:13 PM EDT	Special Weather Statement	JAX	Flagler	17 min
Apr 11, 1:18 PM EDT	Special Weather Statement	JAX	Flagler	27 min
Apr 11, 1:20 PM EDT	Special Marine Warning	JAX		55 min
Apr 11, 1:31 PM EDT	Special Weather Statement	JAX	Flagler	29 min
Apr 11, 1:49 PM EDT	Special Marine Warning	JAX		56 min
Apr 11, 2:01 PM EDT	Special Weather Statement	JAX	Flagler	14 min
Apr 11, 2:23 PM EDT	Special Weather Statement	JAX	Flagler	37 min
Apr 11, 4:51 AM EDT	Special Weather Statement	JAX	Clinch	39 min
Apr 11, 5:20 AM EDT	Special Weather Statement	JAX	Charlton	40 min
Apr 11, 5:36 AM EDT	Areal Flood Warning	JAX	Atkinson, Clinch, Coffee, Pierce, Ware	3 hr
Apr 11, 5:50 AM EDT	Areal Flood Advisory	JAX	Appling, Bacon, Coffee, Pierce, Ware, Wayne	3 hr
Apr 11, 7:02 AM EDT	Special Weather Statement	JAX	Clinch, Echols, Ware	58 min
Apr 11, 7:39 AM EDT	Areal Flood Advisory	JAX	Brantley, Camden, Charlton, Clinch, Echols, Ware	3 hr
Apr 11, 7:58 AM EDT	Special Weather Statement	JAX	Clinch	47 min
Apr 11, 8:19 AM EDT	Areal Flood Advisory	JAX	Camden, Charlton, Glynn	3 hr
Apr 11, 8:41 AM EDT	Special Weather Statement	JAX	Camden	34 min
Apr 11, 9:48 AM EDT	River Flood Warning	JAX	Echols	21 days
Apr 11, 10:05 AM EDT	Areal Flood Warning	JAX	Camden, Glynn	115 min
Apr 11, 10:25 AM EDT	Special Weather Statement	JAX	Camden	20 min
Apr 11, 11:09 AM EDT	Special Weather Statement	JAX	Camden, Glynn	36 min

Nearby

Severe Thunderstorm Warnings in Florida, 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.