Alert archive / Florida / Flash Flood Warnings in 2023

Flash Flood Warning 3, NWS Jacksonville, FL

June 20, 2023Marion County, Florida

NWS Jacksonville, FL issued this flash flood warning at Jun 20, 2023, 11:03 AM EDT for Marion County, Florida. It was in force for 117 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 20, 2023, 11:03 AM EDT (15:03 UTC)
Expired: Jun 20, 2023, 1:00 PM EDT
In force: 117 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Flood severity: None

County Marion County, FL

The radar

The Jacksonville radar (KJAX), 146 km from the middle of the area, began a volume at 15:06 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

Tampa Bay, FL (KTBW), launched 12:00Z, 3.1 hours before the alert went out and 171 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: 1770 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 900 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 158 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 flash flood 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 flash flood warning went out at Jun 20, 10:43 AM EDT, 20 minutes earlier.

Area forecast discussion, Jun 20, 10:43 AM EDT, 20 minutes before

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In the hours before

Local storm report, Jun 20, 10:17 AM EDT, 46 minutes before

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Local storm report, Jun 20, 10:19 AM EDT, 44 minutes before

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Special weather statement, Jun 20, 10:23 AM EDT, 40 minutes before

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Local storm report, Jun 20, 10:28 AM EDT, 35 minutes before

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Local storm report, Jun 20, 10:32 AM EDT, 31 minutes before

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Local storm report, Jun 20, 10:59 AM EDT, 4 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 19, 8:10 PM EDT	Special Weather Statement	JAX	Saint Johns	35 min
Jun 20, 3:39 AM EDT	Special Weather Statement	JAX	Alachua, Baker, Bradford, Columbia, Gilchrist, Hamilton and 3 more	96 min
Jun 20, 5:11 AM EDT	Areal Flood Advisory	JAX	Gilchrist	2 hr
Jun 20, 5:17 AM EDT	Special Weather Statement	JAX	Alachua, Bradford, Putnam, Union	73 min
Jun 20, 5:27 AM EDT	Severe Thunderstorm Warning	JAX	Alachua	33 min
Jun 20, 5:34 AM EDT	Areal Flood Warning	JAX	Gilchrist	116 min
Jun 20, 5:49 AM EDT	Areal Flood Advisory	JAX	Alachua, Gilchrist	116 min
Jun 20, 6:16 AM EDT	Areal Flood Warning	JAX	Alachua, Gilchrist	2 hr
Jun 20, 6:24 AM EDT	Special Weather Statement	JAX	Alachua, Putnam	66 min
Jun 20, 6:52 AM EDT	Areal Flood Warning	JAX	Alachua, Marion	2 hr
Jun 20, 7:10 AM EDT	Special Weather Statement	JAX	Marion	65 min
Jun 20, 7:16 AM EDT	Special Weather Statement	JAX	Saint Johns	44 min
Jun 20, 7:35 AM EDT	Severe Thunderstorm Warning	JAX	Alachua, Marion, Putnam	25 min
Jun 20, 7:39 AM EDT	Special Weather Statement	JAX	Alachua	36 min
Jun 20, 8:06 AM EDT	Areal Flood Advisory	JAX	Marion	114 min
Jun 20, 8:14 AM EDT	Special Weather Statement	JAX	Marion	31 min
Jun 20, 8:48 AM EDT	Special Weather Statement	JAX	Marion	27 min
Jun 20, 9:06 AM EDT	Areal Flood Warning	JAX	Marion	114 min
Jun 20, 9:11 AM EDT	Severe Thunderstorm Warning	JAX	Marion	34 min
Jun 20, 9:28 AM EDT	Flash Flood Warning	JAX	Marion	2 hr
Jun 20, 10:01 AM EDT	Areal Flood Warning	JAX	Marion	119 min
Jun 20, 10:23 AM EDT	Special Weather Statement	JAX	Marion	37 min
Jun 20, 10:36 AM EDT	Areal Flood Advisory	JAX	Marion	114 min
Jun 20, 11:14 AM EDT	Special Weather Statement	JAX	Marion	31 min
Jun 20, 11:17 AM EDT	Severe Thunderstorm Warning	JAX	Marion	28 min
Jun 20, 11:43 AM EDT	Special Weather Statement	JAX	Marion	32 min
Jun 20, 1:28 PM EDT	Special Weather Statement	JAX	Union	32 min
Jun 20, 2:16 PM EDT	Special Marine Warning	JAX		59 min
Jun 20, 2:17 PM EDT	Special Weather Statement	JAX	Union	28 min
Jun 20, 2:22 PM EDT	Flood Watch	JAX	Alachua, Gilchrist, Marion, Putnam, Suwannee	3 days
Jun 20, 3:00 PM EDT	Special Weather Statement	JAX	Marion	45 min
Jun 20, 3:07 PM EDT	Special Weather Statement	JAX	Clay	38 min
Jun 20, 3:24 PM EDT	Special Weather Statement	JAX	Putnam	36 min
Jun 20, 3:25 PM EDT	Special Weather Statement	JAX	Flagler	50 min
Jun 20, 3:54 PM EDT	Special Weather Statement	JAX	Flagler	51 min
Jun 20, 4:24 PM EDT	Special Marine Warning	JAX		33 min
Jun 20, 4:25 PM EDT	Special Weather Statement	JAX	Flagler	35 min
Jun 20, 4:30 PM EDT	Special Weather Statement	JAX	Putnam	30 min
Jun 20, 4:47 PM EDT	Special Weather Statement	JAX	Saint Johns	28 min
Jun 20, 4:48 PM EDT	Special Marine Warning	JAX		57 min
Jun 20, 5:00 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	30 min
Jun 20, 5:08 PM EDT	Special Weather Statement	JAX	Union	37 min
Jun 20, 5:24 PM EDT	Special Weather Statement	JAX	Nassau	36 min
Jun 20, 6:09 PM EDT	Special Weather Statement	JAX	Suwannee	51 min
Jun 20, 6:10 PM EDT	Special Weather Statement	JAX	Nassau	35 min
Jun 20, 6:22 PM EDT	Special Weather Statement	JAX	Baker	38 min
Jun 20, 7:03 PM EDT	Special Weather Statement	JAX	Nassau	27 min
Jun 20, 7:07 PM EDT	Special Marine Warning	JAX		38 min
Jun 20, 7:44 PM EDT	Special Weather Statement	JAX	Duval	31 min
Jun 20, 7:46 PM EDT	Special Marine Warning	JAX		45 min
Jun 20, 7:58 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Saint Johns	17 min
Jun 20, 1:36 PM EDT	Special Weather Statement	JAX	Charlton	24 min
Jun 20, 2:43 PM EDT	Special Weather Statement	JAX	Jeff Davis	32 min
Jun 20, 5:09 PM EDT	Special Weather Statement	JAX	Brantley, Pierce	36 min
Jun 20, 5:16 PM EDT	Special Weather Statement	JAX	Charlton	29 min
Jun 20, 5:39 PM EDT	Special Weather Statement	JAX	Brantley	36 min
Jun 20, 6:00 PM EDT	Severe Thunderstorm Warning	JAX	Brantley, Camden, Charlton	30 min
Jun 20, 6:33 PM EDT	Special Weather Statement	JAX	Camden	42 min
Jun 20, 6:34 PM EDT	Special Weather Statement	JAX	Glynn	26 min

Nearby

Flash Flood Warnings in Florida, 2023 Every flash flood warning 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.