Alert archive / Georgia / Special Weather Statements in 2020
Special Weather Statement, NWS Atlanta, GA
NWS Atlanta, GA issued this special weather statement at Oct 29, 2020, 4:36 AM EDT for 6 counties in Georgia. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 29, 2020, 4:36 AM EDT (08:36 UTC)
- Expired
- Oct 29, 2020, 5:30 AM EDT
- In force
- 54 min
- Issued by
- NWS Atlanta, GA
Counties Bartow County, GA, Fannin County, GA, Gilmer County, GA, Gordon County, GA, Murray County, GA, Pickens County, GA
The radar
The Northeast Alabama radar (KHTX), 139 km from the middle of the area, began a volume at 08:35 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, 8.6 hours before the alert went out and 147 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
- 252 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 851 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.1
The text
As transmitted.
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The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Atlanta, GA wrote its last area forecast discussion before this special weather statement went out at Oct 29, 3:50 AM EDT, 46 minutes earlier.
Area forecast discussion, Oct 29, 3:50 AM EDT, 46 minutes before
Area Forecast Discussion National Weather Service Peachtree City GA 350 AM EDT Thu Oct 29 2020 ...Remnants of Tropical Storm Zeta currently tracking across western and north Georgia bringing strong gusty winds to the area early this morning... .SHORT TERM /Today through Friday/... Tropical Storm Zeta currently over central AL will rapidly move across portions of west and north GA, exiting the forecast area by mid to late morning and continuing to the northeast. An upper level short wave will push across portions of north GA late this evening, helping to push the surface low east of the area. Surface high pressure will begin building into the area Friday afternoon. As Zeta moves across the area this morning light to moderate rain showers will continue across north and much of central Georgia. 1 to 2.5 inches of rainfall is expected through Friday morning across areas along and north of I-85, with locally heavier rainfall possible across portions of north GA. A Flash Flood Watch will remain in effect through 8pm tonight. Zeta will spread a swath of up to 50-70 mph wind gusts again mainly along and north of I-85 as Zeta moves across the area through 8am or so this morning. Wind will remain gusty this morning, however maximum wind gusts will drop into the 20-30 mph range with isolated 15-25 mph gusts possible this afternoon. Low to mid clouds this morning will slowly improve through early afternoon, with clouds scattering by late afternoon across much of the area, however as the short wave moves across this evening clouds will linger across portions of north GA into the late evening hours. With rapidly changing conditions through much of the forecast period, guidance temperatures are in general agreement through the period and stayed with a blend of guidance. Atwell && .LONG TERM /Friday Night through Wednesday/... A much more benign and quiet forecast remains in the long term with mainly dry ridge dominated and abnormally cool airmass in place. Only main influencing feature to speak of is with a mostly dry reinforcing cold front on Sunday. There is some potential for an area of enhanced low level moisture advecting northwestward off the Atlantic ahead of the front so have included a small zone of slight pops for light rain in the far northeast CWA late Saturday into Sunday. What is more impactful will be the much cooler temps and possibly coldest of the season so far to be ushered in behind the front for Monday morning and Tuesday morning. The current forecast looks to have some low 30s and freeze potential in the far NE higher elevations early Monday and while other parts of north GA could be in the mid 30s the enhanced NW gradient winds should limit frost potential. Tuesday morning on the other hand looks to be even cooler with lax winds so is a better bet for not just freeze potential in the NE but also frost across much of the rest of north GA. Central GA looks to be more in the upper 30s with this update, but overall guidance has trended cooler than yesterday. Baker && .AVIATION... 06Z Update... Rain showers associated will push across the TAF sites through 14-16Z as Tropical Storm Zeta moves across west and north Georgia quickly this morning. S to SE winds will increase to 20-25kts with gusts to 50-55kts across the ATL area TAF sites and 15-20 kts with gusts to 30-40kts over CSG/MCN/AHN through 11-12z before shifting to the SW and W with speeds of 15-20G30kts through 18-20z and 10-15kts through 06z. IFR/MVFR CIGs will improve to MVFR through 16-20Z with VFR after 20Z and SCT clouds between 21-24Z. //ATL Confidence... 06Z Update... Medium to high confidence all elements. Atwell && .PRELIMINARY POINT TEMPS/POPS... Athens 79 50 68 45 / 50 20 0 0 Atlanta 76 49 62 46 / 50 10 0 0 Blairsville 73 45 57 38 / 70 30 5 0 Cartersville 76 48 61 44 / 50 20 5 0 Columbus 79 51 68 49 / 40 5 0 0 Gainesville 76 49 63 44 / 70 20 0 0 Macon 83 50 71 47 / 50 20 0 0 Rome 77 49 62 42 / 50 20 5 0 Peachtree City 77 48 64 46 / 50 10 0 0 Vidalia 83 52 72 51 / 60 30 0 0 && .FFC WATCHES/WARNINGS/ADVISORIES... Tornado Watch until 6 AM EDT early this morning for the following zones: Chattahoochee...Harris...Macon...Marion... Muscogee...Schley...Stewart...Sumter...Talbot...Taylor...Webster. Wind Advisory until 4 PM EDT this afternoon for the following zones: Baldwin...Bibb...Bleckley...Butts...Chattahoochee... Clarke...Crawford...Crisp...Dodge...Dooly...Glascock...Greene... Hancock...Houston...Jasper...Jefferson...Johnson...Jones... Lamar...Laurens...Macon...Madison...Marion...Monroe...Morgan... Muscogee...Oconee...Oglethorpe...Peach...Pike...Pulaski... Putnam...Schley...Stewart...Sumter...Talbot...Taliaferro... Taylor...Twiggs...Upson...Warren...Washington...Webster... Wilcox...Wilkes...Wilkinson. Flash Flood Watch through this evening for the following zones: Banks...Barrow...Bartow...Carroll...Catoosa...Chattooga... Cherokee...Clarke...Clayton...Cobb...Coweta...Dade...Dawson... DeKalb...Douglas...Fannin...Fayette...Floyd...Forsyth...Gilmer... Gordon...Gwinnett...Hall...Haralson...Heard...Henry...Jackson... Lumpkin...Murray...Newton...North Fulton...Oconee...Paulding... Pickens...Polk...Rockdale...South Fulton...Spalding...Towns... Union...Walker...Walton...White...Whitfield. Tropical Storm Warning for the following zones: Banks...Barrow... Bartow...Carroll...Catoosa...Chattooga...Cherokee...Clayton... Cobb...Coweta...Dade...Dawson...DeKalb...Douglas...Fannin... Fayette...Floyd...Forsyth...Gilmer...Gordon...Gwinnett...Hall... Haralson...Harris...Heard...Henry...Jackson...Lumpkin... Meriwether...Murray...Newton...North Fulton...Paulding... Pickens...Polk...Rockdale...South Fulton...Spalding...Towns... Troup...Union...Walker...Walton...White...Whitfield. && SHORT TERM...Atwell LONG TERM....Baker AVIATION...Atwell
Hazardous weather outlook, Oct 29, 1:56 AM EDT, 2 hours 40 minutes before
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Special weather statement, Oct 29, 3:50 AM EDT, 46 minutes before
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</html>Special weather statement, Oct 29, 4:17 AM EDT, 19 minutes before
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</html>Local storm report, Oct 29, 4:27 AM EDT, 9 minutes before
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</html>Special weather statement, Oct 29, 4:36 AM EDT, 0 minutes before
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</html>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, 4:56 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 |
| Oct 29, 7:43 PM EDT | Wind Advisory | FFC | Banks, Barrow, Bartow, Carroll, Catoosa, Chattooga and 40 more | 8 hr |
Nearby
Special Weather Statements in Georgia, 2020Every special weather statement in 2020
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.