Alert archive / Georgia / Lake Wind Advisories in 2012

Lake Wind Advisory 4, NWS Jacksonville, FL

January 12, 20127 counties in Florida; 12 counties in Georgia

NWS Jacksonville, FL issued this lake wind advisory at Jan 12, 2012, 3:00 AM EST for 7 counties in Florida; 12 counties in Georgia. It took effect at Jan 12, 2012, 1:00 PM EST. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Jan 12, 2012, 3:00 AM EST (08:00 UTC)
In effect from
Jan 12, 2012, 1:00 PM EST
Expired
Jan 12, 2012, 7:00 PM EST
In force
6 hr
Issued by
NWS Jacksonville, FL

Counties Baker County, FL, Bradford County, FL, Flagler County, FL, Gilchrist County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Camden County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Glynn County, GA, Jeff Davis County, GA, Pierce County, GA, Wayne County, GA

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 8.0 hours before the alert went out and 315 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, Charleston AFB, SC at 00:00Z on 2012-01-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 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, Charleston AFB, SC at 00:00Z on 2012-01-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
685 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this lake wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this lake wind advisory went out at Jan 12, 2:58 AM EST, 2 minutes earlier.

Area forecast discussion, Jan 12, 2:58 AM EST, 2 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
258 AM EST THU JAN 12 2012

.SHORT TERM...THROUGH SATURDAY...
TODAY...SOUTHWEST WINDS WILL ALLOW FOR TEMPS TO WARM UP INTO THE
LOWER/MID 70S ACROSS THE FORECAST AREA. WINDS WILL INCREASE AGAIN
DURING THE LATE MORNING/AFTERNOON TIME FRAME INTO THE 15-20 MPH
RANGE WITH GUSTS TO 30 MPH POSSIBLE. HAVE ISSUED A LAKE WIND
ADVISORY VALID FROM 10AM THROUGH 7PM. THE SECONDARY COLD FRONT
WILL BEGIN TO CROSS THE CWA TONIGHT. DEEP LAYER MOISTURE WILL BE
LIMITED...AND HAVE KEPT PRECIP WORDING OUT OF THE FORECAST...
THOUGH SOME SPRINKLES OR DRIZZLE MAY BE POSSIBLE. CLOUD COVER AND
ELEVATED WINDS WILL AID IN KEEPING TEMPS AT OR ABOVE FREEZING.

FRIDAY AND SATURDAY WILL BE MUCH COOLER WITH HIGHS IN THE 50S AND
LOWS GENERALLY IN THE 27 TO 35 RANGE. NO PRECIP IS EXPECTED.

.LONG TERM...SUNDAY THROUGH WEDNESDAY...
DEEP LAYER TROUGH ACROSS THE EASTERN U.S. WILL SLOWLY MOVE OUT BY
MONDAY WITH WITH FLOW ALOFT MORE ZONAL MONDAY AND TUESDAY. ANOTHER
COLD FRONT WILL APPROACH THE AREA TUESDAY NIGHT AND POSSIBLY
PUSHING INTO THE FORECAST AREA WEDNESDAY. HAVE KEPT POPS AT CHANCE
IN THE TUESDAY-WEDNESDAY TIME FRAME. TEMPS WILL START OUT COLD
SUNDAY MORNING WITH A FREEZE LOOKING MORE LIKELY...AND TEMPS WILL
MODERATE AHEAD OF THE NEXT FRONT.

&&

.AVIATION...CLOUDS 3-4KFT AT GNV WITH SOME LIGHT FOG WILL PRODUCE
MVFR CONDITIONS UNTIL AROUND 14Z. OTHERWISE...VFR CONDITIONS TODAY
WITH SW WINDS INCREASING TO 15G25 KNOTS BY EARLY AFTERNOON.

&&

.MARINE...WINDS GRADUALLY DECREASING OVER THE WATERS THIS MORNING
AND PLAN ON LETTING SCA EXPIRE AT 4AM AND GO WITH SCEC HEADLINE.
WINDS INCREASE AGAIN THIS EVENING AS SECONDARY COLD FRONT
APPROACHES. WILL ISSUE SCA FOR TONIGHT AND FRIDAY MORNING DUE TO
WINDS. SEAS WILL BE LIMITED TO 6 FEET OFFSHORE DUE TO OFFSHORE FLOW.
GALE FORCE GUSTS WILL BE POSSIBLE OVER THE OFFSHORE WATERS TONIGHT.
THESE GUSTS MAY BE FREQUENT OVER THE OFFSHORE GA WATERS AS 925MB
WINDS INCREASE TO 40 KNOTS. WILL ISSUE GALE WATCH FOR OFFSHORE GA
WATERS FOR TONIGHT.

RIP CURRENTS: LOW RISK TODAY AND FRIDAY DUE TO OFFSHORE WINDS.

&&

.FIRE WEATHER...VERY DRY AIR BEHIND SECONDARY COLD FRONT WILL LOWER
RH'S INTO THE 20'S ON FRIDAY. WINDS WILL NEAR RED FLAG CRITERIA SO
WILL ISSUE A WATCH. CRITICALLY LOW RH'S EXPECTED TO PERSIST THROUGH
THE WEEKEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  70  33  53  27 /  10  10  10   0
SSI  69  38  52  34 /   0  10  10   0
JAX  74  38  55  30 /   0  10  10   0
SGJ  72  39  55  35 /  10  10  10   0
GNV  73  39  55  31 /  10  10  10   0
OCF  75  42  57  33 /  10  10  10   0

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...LAKE WIND ADVISORY FROM 10 AM THIS MORNING TO 7 PM EST THIS
     EVENING FOR ALACHUA-BAKER-BRADFORD-CLAY-COLUMBIA-DUVAL-
     FLAGLER-GILCHRIST-HAMILTON-MARION-NASSAU-PUTNAM-ST JOHNS-
     SUWANNEE-UNION.

     FIRE WEATHER WATCH FROM FRIDAY MORNING THROUGH FRIDAY AFTERNOON
     FOR ALACHUA-BAKER-BRADFORD-CLAY-COLUMBIA-DUVAL-FLAGLER-
     GILCHRIST-HAMILTON-MARION-NASSAU-PUTNAM-ST JOHNS-SUWANNEE-
     UNION.

GA...LAKE WIND ADVISORY FROM 10 AM THIS MORNING TO 7 PM EST THIS
     EVENING FOR APPLING-ATKINSON-BACON-BRANTLEY-CHARLTON-CLINCH-
     COASTAL CAMDEN-COASTAL GLYNN-COFFEE-ECHOLS-INLAND CAMDEN-
     INLAND GLYNN-JEFF DAVIS-PIERCE-WARE-WAYNE.

     FIRE WEATHER WATCH FROM FRIDAY MORNING THROUGH FRIDAY AFTERNOON
     FOR APPLING-ATKINSON-BACON-BRANTLEY-CHARLTON-CLINCH-COASTAL
     CAMDEN-COASTAL GLYNN-COFFEE-ECHOLS-INLAND CAMDEN-INLAND
     GLYNN-JEFF DAVIS-PIERCE-WARE-WAYNE.

AM...SMALL CRAFT ADVISORY FOR WINDS UNTIL 4 AM EST EARLY THIS
     MORNING FOR ALTAMAHA SOUND GA TO FERNANDINA BEACH FL 20 NM TO
     60 NM OFFSHORE-FERNANDINA BEACH TO ST AUGUSTINE FL 20 NM TO
     60 NM OFFSHORE-ST AUGUSTINE TO FLAGLER BEACH FL 20 NM TO
     60 NM OFFSHORE.

     SMALL CRAFT ADVISORY FOR WINDS FROM 5 PM THIS AFTERNOON TO 11
     AM EST FRIDAY FOR ALTAMAHA SOUND GA TO FERNANDINA BEACH FL
     20 NM TO 60 NM OFFSHORE-FERNANDINA BEACH TO ST AUGUSTINE FL
     20 NM TO 60 NM OFFSHORE-ST AUGUSTINE TO FLAGLER BEACH FL
     20 NM TO 60 NM OFFSHORE.

     SMALL CRAFT ADVISORY FOR WINDS FROM 7 PM THIS EVENING TO 5 AM
     EST FRIDAY FOR ALTAMAHA SOUND GA TO FERNANDINA BEACH FL OUT
     20 NM-FERNANDINA BEACH TO ST AUGUSTINE FL OUT 20 NM-ST
     AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM.

&&

PRESNALL/ZIBURA/
Hazardous weather outlook, Jan 11, 6:11 PM EST, 8 hours 49 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 12, 3:07 AM ESTFire Weather WatchJAXBaker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more23 hr
Jan 12, 4:17 AM ESTGale WatchJAX11 hr
Jan 12, 4:17 AM ESTSmall Craft Advisory for WindsJAX31 hr
Jan 12, 3:10 PM ESTGale WarningJAX16 hr

Nearby

Lake Wind Advisories in Georgia, 2012Lake Wind Advisories in Florida, 2012Every lake wind advisory in 2012

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.