Alert archive / Florida / Wind Advisories in 2019

Wind Advisory 12, NWS Jacksonville, FL

December 11, 2019Duval County, Flagler County, Nassau County, Florida

NWS Jacksonville, FL issued this wind advisory at Dec 11, 2019, 3:06 PM EST for Duval County, Flagler County, Nassau County, Florida. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Dec 11, 2019, 3:06 PM EST (20:06 UTC)
Expired
Dec 12, 2019, 3:00 PM EST
In force
24 hr
Issued by
NWS Jacksonville, FL

Counties Duval County, FL, Flagler County, FL, Nassau County, FL

The radar

The Jacksonville radar (KJAX), 40 km from the middle of the area, began a volume at 20:07 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.1 hours before the alert went out and 213 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-pSkew-T log-p diagram, Cape Canaveral, FL at 12:00Z on 2019-12-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 840 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2019-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
840 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
469 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 11, 2:20 AM ESTGale WatchJAX13 hr
Dec 11, 2:25 AM ESTRip Current StatementJAXDuval, Flagler, Nassau72 hr
Dec 11, 2:25 AM ESTHigh Surf AdvisoryJAXDuval, Flagler, Nassau62 hr
Dec 11, 3:08 PM ESTGale WarningJAX24 hr
Dec 11, 3:08 PM ESTSmall Craft AdvisoryJAX71 hr

Nearby

Wind Advisories in Florida, 2019Every wind advisory in 2019

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.