Alert archive / Georgia / Special Weather Statements in 2020
Special Weather Statement, NWS Atlanta, GA
NWS Atlanta, GA issued this special weather statement at Jul 12, 2020, 4:44 PM EDT for Troup County, Georgia. It was in force for 31 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
- Jul 12, 2020, 4:44 PM EDT (20:44 UTC)
- Expired
- Jul 12, 2020, 5:15 PM EDT
- In force
- 31 min
- Issued by
- NWS Atlanta, GA
- Wind
- 40
County Troup County, GA
The radar
The Atlanta radar (KFFC), 72 km from the middle of the area, began a volume at 20:47 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, 8.7 hours before the alert went out and 77 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1575 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
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 Jul 12, 3:15 PM EDT, 1 hour 29 minutes earlier.
Area forecast discussion, Jul 12, 3:15 PM EDT, 1 hour 29 minutes before
Area Forecast Discussion National Weather Service Peachtree City GA 315 PM EDT Sun Jul 12 2020 .SHORT TERM /Rest of today through Monday Night/... Tricky near term fcst as the persistent MCS propagating southward across Alabama continues to stay just west of the CWA boundary and has primarily allowed the lofted mid/upper cloud shield to extend across north GA so far limiting diurnal destabilization. While this complex should follow along the tight instability axis still west of the area, the leading edge and outflow could aid its environment and end up pushing into western portions of central GA late this afternoon into evening. Also watching possible isolated convective development behind this system later this evening as the upper wave axis traverses the area mainly in the 00-06z period and holding onto some chance pops accordingly but uncertainty remains high. Any residual moisture from the MCS could end up advecting in some lower stratus or possible fog into parts of the western CWA for Monday morning with the light low level westerly fetch so will need to monitor evening trends as well. Monday looks less impactful as the enhanced moisture and aforementioned shortwave axis will allow some slight to chance pops more confined to southern and eastern portions of central GA, otherwise isolated chance for orographically enhanced convection in the northeast mtns and rest of area should remain dry under NW ridging. Temps thru period should remain right near climo norms and expecting highs Monday generally in low 90s north to mid 90s south. Baker && .LONG TERM /Tuesday through Sunday/... Upper level ridging will slowly build eastward into the Tennessee Valley through the long term periods. A weak surface boundary will linger over portions of central and south Georgia through mid week but will have limited moisture to work with. This pattern will lend itself to isolated to scattered diurnally driven showers and thunderstorms through the work week with afternoon highs in the 90s across much of the area, with mid to upper 90s across a large portion of the forecast area Tuesday through Friday. Heat indices will be near 100 across portions of north GA with 100-105 across central GA through next weekend. Although long term models are in pretty good agreement, GFS continues to trend toward a wetter pattern Thursday and beyond, with POPs likely on Sunday. Atwell && .AVIATION... 18Z Update... Initial VFR conditions with possible few cu 4-6 kft and some mid/upper level cigs from cloud shield of convective complex pushing southward across Alabama. Think most storm activity should stay west of the sites except for perhaps CSG after about 20/21z but will carry VCSH and tempo SHRA for near ATL. Cannot rule out some evening isolated development with main upper wave axis but confidence still low on and will monitor trends. Some MVFR cigs could flirt with sites near ATL and CSG Monday morning but greater chance for CSG. Winds mainly NW to SW 5-8 kts with 3-5 kts overnight (calm in south). Precip chances too low for Monday so just mainly SCT cu 4-6 kft. //ATL Confidence...18Z Update... Low on shower/storm potential this afternoon and evening. High on all else. Baker && .PRELIMINARY POINT TEMPS/POPS... Athens 70 93 71 95 / 30 20 10 10 Atlanta 71 91 71 93 / 30 10 10 10 Blairsville 64 84 63 87 / 40 20 10 10 Cartersville 68 90 67 93 / 40 10 10 5 Columbus 73 94 73 97 / 40 20 10 10 Gainesville 70 89 69 91 / 30 10 10 10 Macon 73 94 72 96 / 30 20 10 10 Rome 69 90 68 94 / 30 10 10 5 Peachtree City 70 91 69 94 / 40 10 10 10 Vidalia 75 95 74 97 / 10 50 20 20 && .FFC WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...Baker LONG TERM....Atwell AVIATION...Baker
Hazardous weather outlook, Jul 12, 11:32 AM EDT, 5 hours 12 minutes before
Hazardous Weather Outlook National Weather Service Peachtree City GA 1132 AM EDT Sun Jul 12 2020 GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 089>098-102>113-131545- Baldwin-Banks-Barrow-Bartow-Bibb-Bleckley-Butts-Carroll-Catoosa- Chattahoochee-Chattooga-Cherokee-Clarke-Clayton-Cobb-Coweta- Crawford-Crisp-Dade-Dawson-DeKalb-Dodge-Dooly-Douglas-Emanuel- Fannin-Fayette-Floyd-Forsyth-Gilmer-Glascock-Gordon-Greene- Gwinnett-Hall-Hancock-Haralson-Harris-Heard-Henry-Houston-Jackson- Jasper-Jefferson-Johnson-Jones-Lamar-Laurens-Lumpkin-Macon- Madison-Marion-Meriwether-Monroe-Montgomery-Morgan-Murray- Muscogee-Newton-North Fulton-Oconee-Oglethorpe-Paulding-Peach- Pickens-Pike-Polk-Pulaski-Putnam-Rockdale-Schley-South Fulton- Spalding-Stewart-Sumter-Talbot-Taliaferro-Taylor-Telfair-Toombs- Towns-Treutlen-Troup-Twiggs-Union-Upson-Walker-Walton-Warren- Washington-Webster-Wheeler-White-Whitfield-Wilcox-Wilkes- Wilkinson- 1132 AM EDT Sun Jul 12 2020 This Hazardous Weather Outlook is for portions of North and Central Georgia. .DAY ONE...This Afternoon and Tonight... Scattered thunderstorms are possible for much of north and central Georgia into tonight. Some storms could be severe with damaging winds, large hail, frequent lightning and locally heavy rainfall. The best chance for severe storms will favor north and west Georgia this afternoon and evening. .DAYS TWO THROUGH SEVEN...Monday through Saturday... Isolated to scattered thunderstorms are expected for portions of north and central Georgia on Monday and for mainly southern portions of central Georgia Tuesday and Wednesday. Scattered to numerous thunderstorms are expected across the entire area Thursday through Saturday. Some storms will be strong with gusty winds, frequent lightning and locally heavy rainfall. Heat indices of 100 to 105 can be expected over portions of central Georgia on Monday and over central and portions of north Georgia Tuesday through Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not requested but spotters are encouraged to submit reports of severe weather through the web by going to weather.gov/atlanta. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines.
In the hours before
Special weather statement, Jul 12, 4:44 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
444 PM EDT Sun Jul 12 2020
GAZ066-078-122115-
Harris GA-Troup GA-
444 PM EDT Sun Jul 12 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HARRIS AND SOUTHERN
TROUP COUNTIES UNTIL 515 PM EDT...
At 444 PM EDT...the leading edge of a line of strong thunderstorms
was along a line extending from Abbottsford to Rocky Point to
Denson...and moving east at 30 mph.
HAZARD...Up to 40 mph wind...frequent cloud to ground lightning
and heavy rain.
IMPACT...Expect minor damage to tree limbs and blowing around of
light...unsecured objects. Heavy rain may cause temporary
street flooding especially in poor drainage areas.
Some locations in the path of these storms include
LaGrange, West Point, Mountville, Cannonville, State Line Park,
Abbottsford, Piedmont Heights, Big Springs, Jones Crossroads, Baughs
Crossroads, Smiths Crossroad, Whitesville-Pine Lake and Long Cane.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.
LAT...LON 3304 8488 3289 8490 3276 8511 3277 8513
3277 8512 3281 8517 3283 8517 3285 8515
3286 8519 3311 8523
TIME...MOT...LOC 2044Z 289DEG 27KT 3306 8521 3299 8522 3292 8529
WIND...40MPHThe office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 5:06 PM EDT | Special Weather Statement | FFC | Harris, Muscogee | 39 min |
| Jul 12, 5:23 PM EDT | Severe Thunderstorm Warning | FFC | Chattahoochee, Harris, Muscogee, Talbot | 52 min |
| Jul 12, 5:40 PM EDT | Severe Thunderstorm Warning | FFC | Chattahoochee, Harris, Muscogee, Talbot | 50 min |
| Jul 12, 6:05 PM EDT | Special Weather Statement | FFC | Chattahoochee, Marion | 25 min |
| Jul 12, 6:13 PM EDT | Special Weather Statement | FFC | Stewart, Webster | 47 min |
| Jul 12, 6:29 PM EDT | Special Weather Statement | FFC | Marion | 31 min |
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.