Alert archive / Georgia / Wind Advisories in 2020
Wind Advisory 9, NWS Atlanta, GA
NWS Atlanta, GA issued this wind advisory at Oct 29, 2020, 7:43 PM EDT for 46 counties in Georgia. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Oct 29, 2020, 7:43 PM EDT (23:43 UTC)
- Expired
- Oct 30, 2020, 4:00 AM EDT
- In force
- 8 hr
- Issued by
- NWS Atlanta, GA
All 46 counties
Banks County, GA, Barrow County, GA, Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Gwinnett County, GA, Hall County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Lumpkin County, GA, Meriwether County, GA, Murray County, GA, Muscogee County, GA, Newton County, GA, Paulding County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Rockdale County, GA, Spalding County, GA, Towns County, GA, Troup County, GA, Union County, GA, Walker County, GA, Walton County, GA, White County, GA, Whitfield County, GA
The radar
The Atlanta radar (KFFC), 72 km from the middle of the area, began a volume at 23:43 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 12:00Z, 11.7 hours before the alert went out and 71 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
- 110 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 653 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 302 m²/s²
- 0-3 km storm-relative helicity
- 326 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.4
The text
As transmitted.
584 WWUS72 KFFC 292343 NPWFFC URGENT - WEATHER MESSAGE National Weather Service Peachtree City GA 743 PM EDT Thu Oct 29 2020 GAZ001>009-011>016-019>025-030>035-041>048-052>057-066>068-078- 089-300800- /O.NEW.KFFC.WI.Y.0009.201029T2343Z-201030T0800Z/ Dade-Walker-Catoosa-Whitfield-Murray-Fannin-Gilmer-Union-Towns- Chattooga-Gordon-Pickens-Dawson-Lumpkin-White-Floyd-Bartow- Cherokee-Forsyth-Hall-Banks-Jackson-Polk-Paulding-Cobb- North Fulton-Gwinnett-Barrow-Haralson-Carroll-Douglas- South Fulton-DeKalb-Rockdale-Walton-Newton-Heard-Coweta-Fayette- Clayton-Spalding-Henry-Troup-Meriwether-Pike-Harris-Muscogee- Including the cities of Calhoun, Dahlonega, Cleveland, Rome, Cartersville, Gainesville, Marietta, Atlanta, Lawrenceville, Carrollton, Douglasville, East Point, Decatur, Conyers, Covington, Newnan, Peachtree City, Griffin, and Columbus 743 PM EDT Thu Oct 29 2020 ...WIND ADVISORY IN EFFECT UNTIL 4 AM EDT FRIDAY... * WHAT...West winds 20 to 25 mph with gusts up to 35 mph. * WHERE...Portions of north central, northeast, northwest and west central Georgia. * WHEN...Until 4 AM EDT Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Trees that were weakened by previous storms 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. && $$
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 28, 8:43 PM EDT | Wind Advisory | FFC | Baldwin, Bibb, Bleckley, Butts, Carroll, Chattahoochee and 52 more | 14 hr |
| Oct 29, 3:44 AM EDT | Special Weather Statement | FFC | Haralson, Polk | 31 min |
| Oct 29, 3:50 AM EDT | Special Weather Statement | FFC | Heard | 25 min |
| Oct 29, 3:55 AM EDT | Special Weather Statement | FFC | Catoosa, Chattooga, Dade, Walker, Whitfield | 65 min |
| Oct 29, 4:10 AM EDT | Special Weather Statement | FFC | Floyd | 50 min |
| Oct 29, 4:17 AM EDT | Special Weather Statement | FFC | Heard | 28 min |
| Oct 29, 4:36 AM EDT | Special Weather Statement | FFC | Bartow, Fannin, Gilmer, Gordon, Murray, Pickens | 54 min |
| Oct 29, 4:56 AM EDT | Special Weather Statement | FFC | Catoosa, Chattooga, Dade, Walker, Whitfield | 49 min |
| Oct 29, 5:05 AM EDT | River Flood Warning | FFC | Forsyth, Fulton | 32 hr |
| Oct 29, 5:11 AM EDT | Special Weather Statement | FFC | Dawson, Lumpkin, Towns, Union, White | 49 min |
| Oct 29, 5:30 AM EDT | Special Weather Statement | FFC | Fannin, Gilmer, Murray | 30 min |
| Oct 29, 5:57 AM EDT | Special Weather Statement | FFC | Towns, Union, White | 33 min |
| Oct 29, 7:40 AM EDT | River Flood Warning | FFC | Towns | 3 hr |
| Oct 29, 8:29 AM EDT | River Flood Warning | FFC | Union | 6 hr |
| Oct 29, 8:34 AM EDT | River Flood Warning | FFC | Towns | 14 hr |
| Oct 29, 10:11 AM EDT | River Flood Warning | FFC | Forsyth | 7 hr |
| Oct 29, 10:22 AM EDT | River Flood Warning | FFC | Union | 2 hr |
| Oct 29, 1:47 PM EDT | River Flood Warning | FFC | Whitfield | 8 hr |
| Oct 29, 7:40 PM EDT | River Flood Warning | FFC | Dawson, Forsyth | 5 hr |
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.