Alert archive / Georgia / Lake Wind Advisories in 2012
Lake Wind Advisory 50, NWS Jacksonville, FL
NWS Jacksonville, FL issued this lake wind advisory at Dec 25, 2012, 1:40 PM EST for 7 counties in Florida; 12 counties in Georgia. It took effect at Dec 26, 2012, 4:05 AM EST. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Dec 25, 2012, 1:40 PM EST (18:40 UTC)
- In effect from
- Dec 26, 2012, 4:05 AM EST
- Expired
- Dec 26, 2012, 10:00 PM EST
- In force
- 18 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
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 6.7 hours before the alert went out and 198 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
- 212 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 448 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Dec 25, 9:57 AM EST, 3 hours 43 minutes earlier.
Area forecast discussion, Dec 25, 9:57 AM EST, 3 hours 43 minutes before
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</html>Hazardous weather outlook, Dec 25, 1:35 PM EST, 5 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 135 PM EST TUE DEC 25 2012 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040- GAZ132>136-149>154-162>166-261515- 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- 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-HAMILTON- SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-ST JOHNS- GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-COFFEE-JEFF DAVIS-BACON- APPLING-WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY-INLAND GLYNN-COASTAL GLYNN-ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN-COASTAL CAMDEN- 135 PM EST TUE DEC 25 2012 ...SLIGHT RISK FOR SEVERE THUNDERSTORMS ON WEDNESDAY... ...WINDY CONDITIONS EXPECTED WEDNESDAY... THIS OUTLOOK IS FOR NORTHEAST FLORIDA...SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT... A LINE OF STRONG TO POSSIBLY SEVERE STORMS WILL APPROACH FROM THE WEST LATE TONIGHT...AND MAY REACH FAR WESTERN PORTIONS OF SOUTH- CENTRAL GEORGIA AND NORTHERN FLORIDA TOWARD DAWN. THE MAIN THREATS FROM THE LINE WILL BE DAMAGING WINDS AND ISOLATED TORNADOES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... A STORM SYSTEM WILL PASS NORTH OF THE AREA ON WEDNESDAY. THE ASSOCIATED COLD FRONT WILL CROSS THE REGION WEDNESDAY MORNING. A LINE OF SHOWERS AND THUNDERSTORMS IS EXPECTED ALONG AND AHEAD OF THE FRONT. THERE IS POTENTIAL FOR STRONG...EVEN DAMAGING...WINDS WITH THESE STORMS. ISOLATED TORNADOES ARE ALSO POSSIBLE. THE THREAT FOR SEVERE WEATHER SHOULD BE GREATEST DURING THE MORNING... DIMINISHING FROM WEST TO EAST DURING THE LATE MORNING AND EARLY AFTERNOON HOURS. WINDY CONDITIONS ARE EXPECTED DURING THE DAY AS THE STORM SYSTEM PASSES NORTH OF THE AREA. A LAKE WIND ADVISORY IS IN EFFECT FOR WEDNESDAY. WINDS WILL BE 20 TO 25 MPH WITH OCCASIONAL GUSTS UP TO 35 MPH. HAZARDOUS MARINE CONDITIONS ARE EXPECTED WEDNESDAY INTO WEDNESDAY NIGHT DUE TO HIGHER WINDS AND SEAS ASSOCIATED WITH THE STORM SYSTEM. A GALE WARNING IS IN EFFECT FOR OFFSHORE WATERS FOR WEDNESDAY AND WEDNESDAY NIGHT...WHILE A SMALL CRAFT ADVISORY IS IN EFFECT FOR NEARSHORE WATERS. SOME PATCHY FROST IS POSSIBLE TOWARD DAWN THURSDAY IN THE NORMALLY COLDER LOCATIONS WHERE TEMPERATURES WILL DROP INTO THE MID 30S AND WINDS CAN BE LIGHT ENOUGH FOR FROST TO FORM. FROST WILL BE MORE WIDESPREAD EARLY FRIDAY WHERE WINDS WILL LIGHT EVERYWHERE...WITH PRE-DAWN TEMPERATURES IN THE LOWER TO MID 30S. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX. PW
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 25, 4:01 AM EST | Gale Watch | JAX | 10 hr | |
| Dec 25, 4:01 AM EST | Small Craft Advisory | JAX | 46 hr | |
| Dec 25, 2:28 PM EST | Gale Warning | JAX | 36 hr | |
| Dec 25, 5:09 AM EST | Dense Fog Advisory | JAX | Appling, Atkinson, Bacon, Brantley, Clinch, Coffee and 4 more | 5 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.