Alert archive / Florida / Wind Advisories in 2021

Wind Advisory 1, NWS Jacksonville, FL

March 18, 202110 counties in Florida; 9 counties in Georgia

NWS Jacksonville, FL issued this wind advisory at Mar 18, 2021, 2:31 AM EDT for 10 counties in Florida; 9 counties in Georgia. It took effect at Mar 18, 2021, 11:00 AM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Mar 18, 2021, 2:31 AM EDT (06:31 UTC)
In effect from
Mar 18, 2021, 11:00 AM EDT
Expired
Mar 18, 2021, 5:59 PM EDT
In force
7 hr
Issued by
NWS Jacksonville, FL

Counties Alachua County, FL, Baker County, FL, Bradford County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Marion County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL, Brantley County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Echols County, GA, Glynn County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA

The radar

The Jacksonville radar (KJAX), 44 km from the middle of the area, began a volume at 06:31 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, 6.5 hours before the alert went out and 45 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 00:00Z on 2021-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 445 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2021-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 square meters per square second.19395878Sfc1 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
445 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1053 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
193 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.1

Open this sounding in Storm Lab

The text

As transmitted.

731 
WWUS72 KJAX 180631
NPWJAX

URGENT - WEATHER MESSAGE
National Weather Service Jacksonville FL
231 AM EDT Thu Mar 18 2021

FLZ020-021-023>025-030>033-035-037-038-122-124-125-133-136-138-
140-222-236-240-340-GAZ136-151>154-162-163-165-166-250-264-350-
364-182300-
/O.NEW.KJAX.WI.Y.0001.210318T1500Z-210318T2300Z/
Hamilton-Suwannee-Baker-Inland Nassau-Inland Duval-Union-Bradford-
Clay-Inland St. Johns-Gilchrist-Putnam-Inland Flagler-
Northern Columbia-Coastal Nassau-Coastal Duval-Coastal St. Johns-
Eastern Alachua-Coastal Flagler-Eastern Marion-Southern Columbia-
Western Alachua-Central Marion-Western Marion-Wayne-Pierce-
Brantley-Inland Glynn-Coastal Glynn-Echols-Clinch-Inland Camden-
Coastal Camden-Northern Ware-Northeastern Charlton-Southern Ware-
Western Charlton-
Including the cities of Jasper, Jennings, West Lake, Belmont, 
White Springs, Houston, Live Oak, McAlpin, Newburn, 
Suwannee Springs, Macclenny, Olustee, Ratliff, Hilliard, 
Kings Ferry, Bryceville, Normandy, Ortega, Riverside, San Marco, 
Lake Butler, Starke, New River, Doctors Inlet, Lakeside, Bellair,
Middleburg, Orange Park, Fruit Cove, Switzerland, Bakersville, 
Picolata, Trenton, Bostwick, Carraway, Palatka, Bunnell, 
Espanola, Andalusia, Winfield, Suwannee Valley, Amelia City, 
Fernandina Beach, Yulee, Arlington, Jacksonville, Oceanway, 
Tallyrand, Ponte Vedra Beach, Durbin, Palm Valley, Anastasia, 
Saint Augustine, Gainesville, Gainesville Airport, Newnans Lake, 
Palm Coast, Lynne, Moss Bluff, Columbia, Lake City, 
Oleno State Park, Lulu, Watertown, High Springs, Newberry, 
Archer, Anthony, Burbank, Ocala, Weirsdale, Ocala Airport, 
Doctortown, Gardi, Jesup, Blackshear, Atkinson, Hickox, Hortense,
Nahunta, Raybon, Waynesville, Hoboken, Thalmann, Jekyll Island, 
Glynn Haven, Sea Island, St. Simons, Country Club Estate, 
Dock Junction, Needmore, Statenville, Homerville, Colesburg, 
Tarboro, Waverly, Woodbine, Dover Bluff, Kingsland, Dungeness, 
Needham, Waycross, Winokur, Folkston, St. George, Homeland, 
Race Pond, and Stephen Foster State Park
231 AM EDT Thu Mar 18 2021

...WIND ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT
THIS EVENING...

* WHAT...Southwest winds 20 to 25 mph with peak gusts around 40
  mph expected ahead of the approaching squall line.

* WHERE...Portions of southeast Georgia and northeast and 
  northern Florida.

* WHEN...From 11 AM this morning to 7 PM EDT this evening.

* 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
399 
WWUS72 KJAX 182159
NPWJAX

URGENT - WEATHER MESSAGE
National Weather Service Jacksonville FL
559 PM EDT Thu Mar 18 2021

FLZ020-021-023>025-030>033-035-037-038-122-124-125-133-136-138-
140-222-236-240-340-GAZ136-151>154-162-163-165-166-250-264-350-
364-182300-
/O.CAN.KJAX.WI.Y.0001.000000T0000Z-210318T2300Z/
Hamilton-Suwannee-Baker-Inland Nassau-Inland Duval-Union-Bradford-
Clay-Inland St. Johns-Gilchrist-Putnam-Inland Flagler-
Northern Columbia-Coastal Nassau-Coastal Duval-Coastal St. Johns-
Eastern Alachua-Coastal Flagler-Eastern Marion-Southern Columbia-
Western Alachua-Central Marion-Western Marion-Wayne-Pierce-
Brantley-Inland Glynn-Coastal Glynn-Echols-Clinch-Inland Camden-
Coastal Camden-Northern Ware-Northeastern Charlton-Southern Ware-
Western Charlton-
Including the cities of Jasper, Jennings, West Lake, Belmont, 
White Springs, Houston, Live Oak, McAlpin, Newburn, 
Suwannee Springs, Macclenny, Olustee, Ratliff, Hilliard, 
Kings Ferry, Bryceville, Normandy, Ortega, Riverside, San Marco, 
Lake Butler, Starke, New River, Doctors Inlet, Lakeside, Bellair,
Middleburg, Orange Park, Fruit Cove, Switzerland, Bakersville, 
Picolata, Trenton, Bostwick, Carraway, Palatka, Bunnell, 
Espanola, Andalusia, Winfield, Suwannee Valley, Amelia City, 
Fernandina Beach, Yulee, Arlington, Jacksonville, Oceanway, 
Tallyrand, Ponte Vedra Beach, Durbin, Palm Valley, Anastasia, 
Saint Augustine, Gainesville, Gainesville Airport, Newnans Lake, 
Palm Coast, Lynne, Moss Bluff, Columbia, Lake City, 
Oleno State Park, Lulu, Watertown, High Springs, Newberry, 
Archer, Anthony, Burbank, Ocala, Weirsdale, Ocala Airport, 
Doctortown, Gardi, Jesup, Blackshear, Atkinson, Hickox, Hortense,
Nahunta, Raybon, Waynesville, Hoboken, Thalmann, Jekyll Island, 
Glynn Haven, Sea Island, St. Simons, Country Club Estate, 
Dock Junction, Needmore, Statenville, Homerville, Colesburg, 
Tarboro, Waverly, Woodbine, Dover Bluff, Kingsland, Dungeness, 
Needham, Waycross, Winokur, Folkston, St. George, Homeland, 
Race Pond, and Stephen Foster State Park
559 PM EDT Thu Mar 18 2021

...WIND ADVISORY IS CANCELLED...


$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 11:53 AM EDTSpecial Weather StatementJAXHamilton, Suwannee82 min
Mar 18, 12:55 PM EDTSpecial Weather StatementJAXGilchrist, Suwannee50 min
Mar 18, 1:16 PM EDTSpecial Weather StatementJAXHamilton29 min
Mar 18, 1:33 PM EDTSpecial Weather StatementJAXColumbia, Suwannee42 min
Mar 18, 1:41 PM EDTSevere Thunderstorm WarningJAXColumbia, Gilchrist, Suwannee49 min
Mar 18, 2:02 PM EDTSpecial Weather StatementJAXGilchrist43 min
Mar 18, 2:09 PM EDTSpecial Weather StatementJAXBaker, Bradford, Union66 min
Mar 18, 2:29 PM EDTSevere Thunderstorm WarningJAXAlachua, Gilchrist46 min
Mar 18, 2:40 PM EDTTornado WarningJAXAlachua, Gilchrist35 min
Mar 18, 2:58 PM EDTSevere Thunderstorm WarningJAXAlachua, Bradford, Union47 min
Mar 18, 3:07 PM EDTTornado WarningJAXAlachua, Bradford, Union23 min
Mar 18, 3:22 PM EDTSevere Thunderstorm WarningJAXBaker, Bradford, Clay, Duval, Union38 min
Mar 18, 3:40 PM EDTSpecial Weather StatementJAXDuval, Nassau50 min
Mar 18, 3:57 PM EDTSevere Thunderstorm WarningJAXBaker, Bradford, Clay, Duval36 min
Mar 18, 3:59 PM EDTSpecial Marine WarningJAX91 min
Mar 18, 4:10 PM EDTTornado WarningJAXClay, Duval11 min
Mar 18, 4:41 PM EDTSpecial Weather StatementJAXSaint Johns19 min
Mar 18, 4:49 PM EDTSpecial Weather StatementJAXCitrus56 min
Mar 18, 4:52 PM EDTSpecial Marine WarningJAX83 min
Mar 18, 5:31 PM EDTSpecial Weather StatementJAXDuval44 min
Mar 18, 6:07 PM EDTSpecial Weather StatementJAXDuval23 min
Mar 18, 6:10 PM EDTSpecial Marine WarningJAX2 hr
Mar 18, 7:09 PM EDTSpecial Weather StatementJAXSaint Johns51 min
Mar 18, 11:27 AM EDTSpecial Weather StatementJAXAtkinson, Coffee, Jeff Davis48 min
Mar 18, 11:54 AM EDTSpecial Weather StatementJAXClinch, Echols36 min
Mar 18, 12:16 PM EDTSpecial Weather StatementJAXAppling, Atkinson, Bacon, Coffee, Jeff Davis44 min
Mar 18, 12:59 PM EDTSpecial Weather StatementJAXAppling, Bacon, Pierce46 min
Mar 18, 1:23 PM EDTSevere Thunderstorm WarningJAXAppling, Bacon, Pierce, Ware, Wayne30 min
Mar 18, 1:38 PM EDTTornado WarningJAXAppling, Pierce, Wayne14 min
Mar 18, 1:44 PM EDTSpecial Weather StatementJAXAppling31 min
Mar 18, 1:54 PM EDTSpecial Weather StatementJAXWayne36 min
Mar 18, 3:53 PM EDTSpecial Weather StatementJAXCamden52 min

Nearby

Wind Advisories in Florida, 2021Wind Advisories in Georgia, 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.