Alert archive / Florida / Wind Advisories in 2023

Wind Advisory 9, NWS Jacksonville, FL

August 30, 20239 counties in Florida; 6 counties in Georgia

NWS Jacksonville, FL issued this wind advisory at Aug 30, 2023, 5:12 PM EDT for 9 counties in Florida; 6 counties in Georgia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Aug 30, 2023, 5:12 PM EDT (21:12 UTC)
Expired: Aug 30, 2023, 7:57 PM EDT
In force: 3 hr
Issued by: NWS Jacksonville, FL

Counties Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Gilchrist County, FL, Marion County, FL, Putnam County, FL, Suwannee County, FL, Union County, FL, Atkinson County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Ware County, GA

The radar

The Jacksonville radar (KJAX), 72 km from the middle of the area, began a volume at 21:11 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, 9.2 hours before the alert went out and 73 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: 888 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 600 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 361 m²/s²
0-3 km storm-relative helicity: 421 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 16.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind advisory 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 wind advisory went out at Aug 30, 5:04 PM EDT, 8 minutes earlier.

Area forecast discussion, Aug 30, 5:04 PM EDT, 8 minutes before

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In the hours before

Local storm report, Aug 30, 4:29 PM EDT, 43 minutes before

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Local storm report, Aug 30, 4:32 PM EDT, 40 minutes before

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Local storm report, Aug 30, 4:35 PM EDT, 37 minutes before

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Local storm report, Aug 30, 4:37 PM EDT, 35 minutes before

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Local storm report, Aug 30, 4:40 PM EDT, 32 minutes before

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Local storm report, Aug 30, 4:44 PM EDT, 28 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
Aug 29, 8:06 PM EDT	Special Weather Statement	JAX	Clay, Duval	39 min
Aug 29, 8:16 PM EDT	Special Weather Statement	JAX	Suwannee	44 min
Aug 29, 8:21 PM EDT	Special Weather Statement	JAX	Bradford	39 min
Aug 29, 8:42 PM EDT	Special Weather Statement	JAX	Columbia	33 min
Aug 29, 8:59 PM EDT	Special Weather Statement	JAX	Baker	46 min
Aug 29, 9:11 PM EDT	Special Weather Statement	JAX	Suwannee	34 min
Aug 29, 9:28 PM EDT	Special Weather Statement	JAX	Hamilton	47 min
Aug 29, 9:31 PM EDT	Special Weather Statement	JAX	Suwannee	29 min
Aug 30, 6:54 AM EDT	Tornado Warning	JAX	Marion	12 min
Aug 30, 8:03 AM EDT	Extreme Wind Warning	JAX	Suwannee	117 min
Aug 30, 8:47 AM EDT	Areal Flood Warning	JAX	Hamilton, Suwannee	89 min
Aug 30, 9:15 AM EDT	Areal Flood Warning	JAX	Hamilton	91 min
Aug 30, 9:45 AM EDT	Areal Flood Warning	JAX	Hamilton	101 min
Aug 30, 10:06 AM EDT	Flash Flood Warning	JAX	Hamilton	38 min
Aug 30, 7:57 PM EDT	Wind Advisory	JAX	Duval, Nassau	3 hr
Aug 30, 7:59 PM EDT	Small Craft Advisory	JAX		7 hr
Aug 30, 5:42 AM EDT	Tornado Warning	JAX	Charlton	18 min
Aug 30, 6:26 AM EDT	Tornado Warning	JAX	Brantley, Pierce	9 min
Aug 30, 6:41 AM EDT	Tornado Warning	JAX	Brantley, Glynn, Wayne	19 min
Aug 30, 6:58 AM EDT	Tornado Warning	JAX	Wayne	17 min
Aug 30, 7:17 AM EDT	Tornado Warning	JAX	Appling, Wayne	28 min
Aug 30, 7:23 AM EDT	Tornado Warning	JAX	Camden, Glynn	22 min
Aug 30, 7:40 AM EDT	Tornado Warning	JAX	Camden, Glynn	35 min
Aug 30, 7:55 AM EDT	Tornado Warning	JAX	Glynn	20 min
Aug 30, 10:10 AM EDT	Flash Flood Warning	JAX	Echols	76 min
Aug 30, 10:23 AM EDT	Areal Flood Warning	JAX	Clinch, Echols	112 min
Aug 30, 10:59 AM EDT	Areal Flood Warning	JAX	Atkinson, Clinch	2 hr
Aug 30, 11:15 AM EDT	Flash Flood Warning	JAX	Atkinson, Clinch	2 hr
Aug 30, 11:44 AM EDT	Areal Flood Warning	JAX	Atkinson, Coffee, Ware	3 hr
Aug 30, 12:01 PM EDT	Flash Flood Warning	JAX	Atkinson, Coffee	2 hr
Aug 30, 12:26 PM EDT	Flash Flood Warning	JAX	Bacon, Coffee, Ware	2 hr
Aug 30, 12:43 PM EDT	Flash Flood Warning	JAX	Coffee	2 hr
Aug 30, 12:54 PM EDT	Flash Flood Warning	JAX	Appling, Bacon	3 hr
Aug 30, 12:56 PM EDT	Flash Flood Warning	JAX	Jeff Davis	3 hr

Nearby

Wind Advisories in Florida, 2023 Wind Advisories in Georgia, 2023 Every wind advisory 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.