Alert archive / Florida / Tornado Warnings in 2023

Tornado Warning 42, NWS Jacksonville, FL

October 12, 2023Marion County, Florida

NWS Jacksonville, FL issued this tornado warning at Oct 12, 2023, 5:56 AM EDT for Marion County, Florida. It was in force for 17 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: Oct 12, 2023, 5:56 AM EDT (09:56 UTC)
Expired: Oct 12, 2023, 6:13 AM EDT
In force: 17 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Marion County, FL

The radar

The Jacksonville radar (KJAX), 146 km from the middle of the area, began a volume at 09:55 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
Oct 12, 12:49 AM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 9.9 hours before the alert went out and 148 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: 1077 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 520 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 tornado 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 tornado warning went out at Oct 12, 4:00 AM EDT, 1 hour 56 minutes earlier.

Area forecast discussion, Oct 12, 4:00 AM EDT, 1 hour 56 minutes before

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In the hours before

Local storm report, Oct 12, 5:03 AM EDT, 53 minutes before

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Local storm report, Oct 12, 5:13 AM EDT, 43 minutes before

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Special weather statement, Oct 12, 5:26 AM EDT, 30 minutes before

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Special weather statement, Oct 12, 5:34 AM EDT, 22 minutes before

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Special weather statement, Oct 12, 5:37 AM EDT, 19 minutes before

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Special weather statement, Oct 12, 5:48 AM EDT, 8 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
Oct 12, 1:04 AM EDT	Special Weather Statement	JAX	Flagler	26 min
Oct 12, 1:11 AM EDT	Special Weather Statement	JAX	Saint Johns	34 min
Oct 12, 1:42 AM EDT	Special Weather Statement	JAX	Alachua	48 min
Oct 12, 1:45 AM EDT	Special Weather Statement	JAX	Saint Johns	30 min
Oct 12, 1:52 AM EDT	Severe Thunderstorm Warning	JAX	Flagler, Saint Johns	41 min
Oct 12, 1:55 AM EDT	Special Marine Warning	JAX		52 min
Oct 12, 2:02 AM EDT	Tornado Warning	JAX	Saint Johns	23 min
Oct 12, 2:19 AM EDT	Special Weather Statement	JAX	Marion	26 min
Oct 12, 2:37 AM EDT	Tornado Warning	JAX	Marion	23 min
Oct 12, 2:43 AM EDT	Special Weather Statement	JAX	Putnam	32 min
Oct 12, 2:50 AM EDT	Special Weather Statement	JAX	Clay	25 min
Oct 12, 2:58 AM EDT	Tornado Warning	JAX	Marion	33 min
Oct 12, 3:02 AM EDT	Special Weather Statement	JAX	Gilchrist	28 min
Oct 12, 3:09 AM EDT	Areal Flood Advisory	JAX	Marion	3 hr
Oct 12, 3:10 AM EDT	Special Weather Statement	JAX	Putnam	35 min
Oct 12, 3:28 AM EDT	Areal Flood Advisory	JAX	Saint Johns	3 hr
Oct 12, 3:31 AM EDT	Severe Thunderstorm Warning	JAX	Marion	29 min
Oct 12, 3:32 AM EDT	Areal Flood Warning	JAX	Marion	6 hr
Oct 12, 3:48 AM EDT	Special Weather Statement	JAX	Putnam	42 min
Oct 12, 3:51 AM EDT	Special Weather Statement	JAX	Marion	24 min
Oct 12, 3:58 AM EDT	Special Weather Statement	JAX	Saint Johns	32 min
Oct 12, 4:12 AM EDT	Areal Flood Warning	JAX	Saint Johns	4 hr
Oct 12, 4:20 AM EDT	Severe Thunderstorm Warning	JAX	Flagler, Putnam	25 min
Oct 12, 4:40 AM EDT	Severe Thunderstorm Warning	JAX	Flagler	20 min
Oct 12, 4:45 AM EDT	Special Marine Warning	JAX		30 min
Oct 12, 5:02 AM EDT	Special Weather Statement	JAX	Putnam	28 min
Oct 12, 5:06 AM EDT	Severe Thunderstorm Warning	JAX	Alachua, Marion	24 min
Oct 12, 5:11 AM EDT	Special Marine Warning	JAX		34 min
Oct 12, 5:21 AM EDT	Areal Flood Advisory	JAX	Flagler, Saint Johns	3 hr
Oct 12, 5:26 AM EDT	Special Weather Statement	JAX	Bradford	34 min
Oct 12, 5:34 AM EDT	Special Weather Statement	JAX	Putnam	26 min
Oct 12, 5:37 AM EDT	Special Marine Warning	JAX		38 min
Oct 12, 5:37 AM EDT	Special Weather Statement	JAX	Marion	23 min
Oct 12, 5:48 AM EDT	Special Weather Statement	JAX	Marion	27 min
Oct 12, 6:02 AM EDT	Special Weather Statement	JAX	Saint Johns	13 min
Oct 12, 6:05 AM EDT	Special Marine Warning	JAX		40 min
Oct 12, 6:12 AM EDT	Special Weather Statement	JAX	Marion	18 min
Oct 12, 6:24 AM EDT	Special Weather Statement	JAX	Putnam	21 min
Oct 12, 6:31 AM EDT	Special Weather Statement	JAX	Saint Johns	14 min
Oct 12, 6:33 AM EDT	Special Marine Warning	JAX		42 min
Oct 12, 6:39 AM EDT	Special Weather Statement	JAX	Saint Johns	36 min
Oct 12, 6:41 AM EDT	Tornado Warning	JAX	Flagler, Marion, Putnam	34 min
Oct 12, 6:54 AM EDT	Areal Flood Advisory	JAX	Saint Johns	2 hr
Oct 12, 6:57 AM EDT	Special Marine Warning	JAX		33 min
Oct 12, 7:00 AM EDT	Tornado Warning	JAX	Saint Johns	15 min
Oct 12, 7:04 AM EDT	Special Weather Statement	JAX	Flagler	26 min
Oct 12, 7:12 AM EDT	Areal Flood Advisory	JAX	Marion	3 hr
Oct 12, 7:13 AM EDT	Special Weather Statement	JAX	Marion	17 min
Oct 12, 7:17 AM EDT	Tornado Warning	JAX	Marion, Putnam	28 min
Oct 12, 7:27 AM EDT	Special Marine Warning	JAX		48 min
Oct 12, 7:36 AM EDT	Tornado Warning	JAX	Flagler, Putnam	24 min
Oct 12, 7:37 AM EDT	Areal Flood Advisory	JAX	Flagler, Marion, Putnam	3 hr
Oct 12, 7:55 AM EDT	Tornado Warning	JAX	Flagler	21 min
Oct 12, 8:00 AM EDT	Special Weather Statement	JAX	Marion	30 min
Oct 12, 8:02 AM EDT	Special Weather Statement	JAX	Citrus	28 min
Oct 12, 8:03 AM EDT	Special Marine Warning	JAX		42 min
Oct 12, 8:07 AM EDT	Areal Flood Warning	JAX	Flagler	3 hr
Oct 12, 8:08 AM EDT	Tornado Warning	JAX	Marion	22 min
Oct 12, 8:22 AM EDT	Areal Flood Advisory	JAX	Flagler	3 hr
Oct 12, 8:24 AM EDT	Special Weather Statement	JAX	Putnam	36 min
Oct 12, 8:28 AM EDT	Special Weather Statement	JAX	Marion	47 min
Oct 12, 8:30 AM EDT	Tornado Warning	JAX	Marion	15 min
Oct 12, 8:58 AM EDT	Special Weather Statement	JAX	Marion	32 min
Oct 12, 9:00 AM EDT	Special Weather Statement	JAX	Union	30 min
Oct 12, 9:29 AM EDT	Special Weather Statement	JAX	Putnam	31 min
Oct 12, 10:06 AM EDT	Special Weather Statement	JAX	Alachua	24 min
Oct 12, 10:19 AM EDT	Severe Thunderstorm Warning	JAX	Alachua, Putnam	17 min
Oct 12, 10:34 AM EDT	Special Weather Statement	JAX	Putnam	41 min
Oct 12, 10:48 AM EDT	Special Weather Statement	JAX	Suwannee	27 min
Oct 12, 10:56 AM EDT	Special Weather Statement	JAX	Saint Johns	34 min
Oct 12, 11:09 AM EDT	Areal Flood Advisory	JAX	Duval, Nassau	3 hr
Oct 12, 11:14 AM EDT	Special Weather Statement	JAX	Putnam	31 min
Oct 12, 11:24 AM EDT	Special Weather Statement	JAX	Putnam	36 min
Oct 12, 11:31 AM EDT	Special Marine Warning	JAX		59 min
Oct 12, 11:58 AM EDT	Areal Flood Advisory	JAX	Duval	2 hr
Oct 12, 12:07 PM EDT	Special Weather Statement	JAX	Clay	23 min
Oct 12, 12:31 PM EDT	Special Marine Warning	JAX		59 min
Oct 12, 12:42 PM EDT	Areal Flood Advisory	JAX	Clay, Duval, Saint Johns	2 hr
Oct 12, 12:44 PM EDT	Areal Flood Advisory	JAX	Baker, Bradford, Clay, Duval, Union	61 min
Oct 12, 12:58 PM EDT	Special Marine Warning	JAX		2 hr

Nearby

Tornado Warnings in Florida, 2023 Every tornado warning in 2023 Tornadoes 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.