Alert archive / Florida / Wind Advisories in 2017

Wind Advisory 9, NWS Jacksonville, FL

August 27, 2017Duval County, Nassau County, Florida; Camden County, Glynn County, Georgia

NWS Jacksonville, FL issued this wind advisory at Aug 27, 2017, 3:37 PM EDT for Duval County, Nassau County, Florida; Camden County, Glynn County, Georgia. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Aug 27, 2017, 3:37 PM EDT (19:37 UTC)
Expired
Aug 28, 2017, 8:52 AM EDT
In force
17 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 19:38 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, 7.6 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.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 2017-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1250 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2017-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 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
1250 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
591 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
-26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

359 
WWUS72 KJAX 271937
NPWJAX

URGENT - WEATHER MESSAGE
National Weather Service Jacksonville FL
337 PM EDT Sun Aug 27 2017


FLZ124-125-GAZ154-166-281300-
/O.NEW.KJAX.WI.Y.0009.170827T1937Z-170828T1300Z/
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
337 PM EDT Sun Aug 27 2017

...WIND ADVISORY IN EFFECT UNTIL 9 AM EDT MONDAY...

The National Weather Service in Jacksonville has issued a Wind
Advisory, which is in effect until 9 AM EDT Monday. 

* TIMING...Tonight and early Monday morning.

* WINDS...Northeast 25 mph with gusts to 40 mph at the coast and 
  waterways.

* IMPACTS...Minor damage to trees...power lines and property is
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory is issued when sustained winds greater than
25 mph are expected for at least an hour, with gusts of 35 mph 
or higher. 

Motorists in high profiles vehicles are advised to use caution 
until the wind subsides. 

&&

$$
1 follow-up statement
911 
WWUS72 KJAX 281252
NPWJAX

URGENT - WEATHER MESSAGE
National Weather Service Jacksonville FL
852 AM EDT Mon Aug 28 2017

FLZ124-125-GAZ154-166-281400-
/O.CAN.KJAX.WI.Y.0009.000000T0000Z-170828T1300Z/
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
852 AM EDT Mon Aug 28 2017

...WIND ADVISORY IS CANCELLED...

The National Weather Service in Jacksonville has cancelled the
Wind Advisory. 

Onshore winds along coastal locations in Glynn, Camden, and Duval 
counties have gradually subsided this morning, with wind gusts no 
longer near 40 mph. 

$$

Nelson

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 8:14 PM EDTSpecial Weather StatementJAXMarion46 min
Aug 27, 2:21 PM EDTCoastal Flood StatementJAXDuval, Flagler, Nassau30 hr
Aug 27, 2:21 PM EDTRip Current StatementJAXDuval, Flagler, Nassau28 hr
Aug 27, 5:30 PM EDTGale WarningJAX10 hr

Nearby

Wind Advisories in Florida, 2017Wind Advisories in Georgia, 2017Every wind advisory in 2017

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.