Alert archive / Florida / Special Weather Statements in 2013

Special Weather Statement, NWS Jacksonville, FL

April 19, 2013Duval County, Florida

NWS Jacksonville, FL issued this special weather statement at Apr 19, 2013, 4:04 PM EDT for Duval County, Florida. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 19, 2013, 4:04 PM EDT (20:04 UTC)
Expired: Apr 19, 2013, 4:45 PM EDT
In force: 41 min
Issued by: NWS Jacksonville, FL

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 35 km from the middle of the area, began a volume at 20:05 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, 8.1 hours before the alert went out and 37 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: 93 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -82 m²/s²
0-3 km storm-relative helicity: -53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 19, 4:03 AM EDT	Lake Wind Advisory	JAX	Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more	13 hr
Apr 19, 3:14 PM EDT	Special Weather Statement	JAX	Marion	46 min
Apr 19, 3:48 PM EDT	Special Weather Statement	JAX	Putnam	42 min
Apr 19, 4:12 PM EDT	Special Weather Statement	JAX	Saint Johns	48 min
Apr 19, 4:18 PM EDT	Special Weather Statement	JAX	Columbia	42 min
Apr 19, 4:48 PM EDT	Special Weather Statement	JAX	Flagler, Marion	42 min
Apr 19, 4:53 PM EDT	Special Weather Statement	JAX	Baker	52 min
Apr 19, 4:59 PM EDT	Special Marine Warning	JAX		2 hr
Apr 19, 5:14 PM EDT	Special Marine Warning	JAX		2 hr
Apr 19, 5:26 PM EDT	Special Weather Statement	JAX	Flagler	34 min
Apr 19, 5:30 PM EDT	Special Weather Statement	JAX	Putnam	45 min
Apr 19, 5:38 PM EDT	Special Weather Statement	JAX	Baker, Nassau	37 min
Apr 19, 6:17 PM EDT	Special Weather Statement	JAX	Nassau	43 min
Apr 19, 6:36 PM EDT	Special Marine Warning	JAX		114 min
Apr 19, 6:59 PM EDT	Special Marine Warning	JAX		61 min
Apr 19, 3:26 PM EDT	Special Weather Statement	JAX	Appling	49 min
Apr 19, 3:44 PM EDT	Special Weather Statement	JAX	Appling, Bacon	46 min
Apr 19, 3:57 PM EDT	Special Weather Statement	JAX	Atkinson	48 min
Apr 19, 4:17 PM EDT	Special Weather Statement	JAX	Appling	43 min
Apr 19, 4:19 PM EDT	Special Weather Statement	JAX	Coffee, Jeff Davis	26 min
Apr 19, 4:36 PM EDT	Special Weather Statement	JAX	Appling	24 min
Apr 19, 4:47 PM EDT	Special Weather Statement	JAX	Clinch	28 min
Apr 19, 5:03 PM EDT	Special Weather Statement	JAX	Ware	27 min
Apr 19, 5:16 PM EDT	Special Weather Statement	JAX	Ware	29 min
Apr 19, 5:22 PM EDT	Special Weather Statement	JAX	Wayne	23 min
Apr 19, 5:29 PM EDT	Special Weather Statement	JAX	Brantley, Pierce	31 min
Apr 19, 5:37 PM EDT	Special Weather Statement	JAX	Ware	23 min
Apr 19, 6:00 PM EDT	Special Weather Statement	JAX	Brantley, Glynn, Wayne	45 min
Apr 19, 6:43 PM EDT	Special Weather Statement	JAX	Brantley, Glynn	47 min
Apr 19, 6:54 PM EDT	Special Weather Statement	JAX	Glynn	36 min

Nearby

Special Weather Statements in Florida, 2013 Every special weather statement in 2013

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.