Alert archive / Georgia / Wind Advisories in 2017
Wind Advisory 18, NWS Atlanta, GA
NWS Atlanta, GA issued this wind advisory at Dec 23, 2017, 3:46 AM EST for 11 counties in Georgia. It took effect at Dec 23, 2017, 5:00 AM EST. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Dec 23, 2017, 3:46 AM EST (08:46 UTC)
- In effect from
- Dec 23, 2017, 5:00 AM EST
- Expired
- Dec 23, 2017, 6:00 PM EST
- In force
- 13 hr
- Issued by
- NWS Atlanta, GA
Counties Catoosa County, GA, Dade County, GA, Fannin County, GA, Gilmer County, GA, Lumpkin County, GA, Murray County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA
The radar
The Northeast Alabama radar (KHTX), 142 km from the middle of the area, began a volume at 08:46 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
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 8.8 hours before the alert went out and 157 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 494 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 366 m²/s²
- 0-3 km storm-relative helicity
- 409 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
130 WWUS72 KFFC 230846 NPWFFC URGENT - WEATHER MESSAGE National Weather Service Peachtree City GA 346 AM EST Sat Dec 23 2017 GAZ005>009-015-016-232300- /O.NEW.KFFC.WI.Y.0018.171223T1000Z-171223T2300Z/ Murray-Fannin-Gilmer-Union-Towns-Lumpkin-White- Including the cities of Dahlonega and Cleveland 346 AM EST Sat Dec 23 2017 ...WIND ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING... The National Weather Service in Peachtree City has issued a Wind Advisory, which is in effect until 6 PM EST this evening. * Locations...Higher elevations of north central and northeast Georgia * Winds...Sustained southwest winds of 25 to 30 mph with gusts between 35 and 40 mph. * Timing...Through 6 PM. * Impacts...Gusty winds will blow around unsecured objects. Trees and tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained wind speeds of at least 20 mph...or gusts to 35 mph or stronger are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. && $$
1 follow-up statement
898 WWUS72 KFFC 231305 NPWFFC URGENT - WEATHER MESSAGE National Weather Service Peachtree City GA 805 AM EST Sat Dec 23 2017 GAZ001>004-232300- /O.EXA.KFFC.WI.Y.0018.000000T0000Z-171223T2300Z/ Dade-Walker-Catoosa-Whitfield- 805 AM EST Sat Dec 23 2017 ...WIND ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING... The National Weather Service in Peachtree City has issued a Wind Advisory, which is in effect until 6 PM EST this evening. * Locations...Higher elevations of northwest Georgia. * Winds...Sustained southwest winds of 25 to 30 mph with gusts between 35 and 40 mph. * Timing...Through 6 PM. * Impacts...Gusty winds will blow around unsecured objects. Trees and tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained wind speeds of at least 20 mph...or gusts to 35 mph or stronger are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. && $$ GAZ005>009-015-016-232300- /O.CON.KFFC.WI.Y.0018.000000T0000Z-171223T2300Z/ Murray-Fannin-Gilmer-Union-Towns-Lumpkin-White- Including the cities of Dahlonega and Cleveland 805 AM EST Sat Dec 23 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST THIS EVENING... * Locations...Higher elevations of north central and northeast Georgia * Winds...Sustained southwest winds of 25 to 30 mph with gusts between 35 and 40 mph. * Timing...Through 6 PM. * Impacts...Gusty winds will blow around unsecured objects. Trees and tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained wind speeds of at least 20 mph...or gusts to 35 mph or stronger are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. && $$
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 23, 10:30 AM EST | Special Weather Statement | FFC | Catoosa, Chattooga, Dade, Walker | 45 min |
| Dec 23, 12:58 PM EST | Special Weather Statement | FFC | Cherokee, Dawson, Fannin, Gilmer, Lumpkin, Pickens | 32 min |
| Dec 23, 1:32 PM EST | Special Weather Statement | FFC | Banks, Barrow, DeKalb, Forsyth, Gwinnett, Hall and 2 more | 28 min |
Nearby
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.