Alert archive / Georgia / Wind Advisories in 2021
Wind Advisory 7, NWS Jacksonville, FL
NWS Jacksonville, FL issued this wind advisory at Dec 20, 2021, 3:15 AM EST for Camden County, Glynn County, Georgia; Duval County, Nassau County, Florida. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Dec 20, 2021, 3:15 AM EST (08:15 UTC)
- Expired
- Dec 20, 2021, 8:34 AM EST
- In force
- 5 hr
- Issued by
- NWS Jacksonville, FL
Counties Duval County, FL, Nassau County, FL, Camden County, GA, Glynn County, GA
The radar
The Jacksonville radar (KJAX), 32 km from the middle of the area, began a volume at 08:18 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 00:00Z, 8.3 hours before the alert went out and 31 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.
- Mixed-layer CAPE
- 98 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 701 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
643 WWUS72 KJAX 200815 NPWJAX URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 315 AM EST Mon Dec 20 2021 FLZ124-125-GAZ154-166-201500- /O.NEW.KJAX.WI.Y.0007.211220T0815Z-211220T1500Z/ Coastal Nassau-Coastal Duval-Coastal Glynn-Coastal Camden- Including the cities of Amelia City, Fernandina Beach, Yulee, Arlington, Jacksonville, Oceanway, Tallyrand, Jekyll Island, Glynn Haven, Sea Island, St. Simons, Country Club Estate, Dock Junction, Dover Bluff, Kingsland, and Dungeness 315 AM EST Mon Dec 20 2021 ...WIND ADVISORY IN EFFECT UNTIL 10 AM EST THIS MORNING... * WHAT...Northeast winds around 25 mph with gusts around 40 mph. * WHERE...In Georgia, Coastal Glynn and Coastal Camden Counties. In Florida, Coastal Nassau and Coastal Duval Counties. * WHEN...Until 10 AM EST this morning. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
1 follow-up statement
458 WWUS72 KJAX 201334 NPWJAX URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 834 AM EST Mon Dec 20 2021 FLZ124-125-GAZ154-166-201445- /O.CAN.KJAX.WI.Y.0007.000000T0000Z-211220T1500Z/ Coastal Nassau-Coastal Duval-Coastal Glynn-Coastal Camden- Including the cities of Amelia City, Fernandina Beach, Yulee, Arlington, Jacksonville, Oceanway, Tallyrand, Jekyll Island, Glynn Haven, Sea Island, St. Simons, Country Club Estate, Dock Junction, Dover Bluff, Kingsland, and Dungeness 834 AM EST Mon Dec 20 2021 ...WIND ADVISORY IS CANCELLED... While winds are no longer expected to reach advisory levels, it will be a gusty day, with gusts reaching 30 to 35 mph. $$
Nearby
Wind Advisories in Georgia, 2021Wind Advisories in Florida, 2021Every wind advisory in 2021
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.