A strong surface pressure gradient associated with a deep surface low moving across the Tennessee Valley produced wind gusts between 35 and 55 mph across north and west Georgia.
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The episode as NWS FFC wrote it up.
A strong surface pressure gradient associated with a deep surface low moving across the Tennessee Valley produced wind gusts between 35 and 55 mph across north and west Georgia.
The local office's own words before the first event, 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 the first event at Apr 22, 6:58 PM EST, 1 hour 2 minutes earlier.
Area Forecast Discussion National Weather Service Peachtree City GA 758 PM EDT Sun Apr 22 2018 .PREV DISCUSSION... /issued 259 PM EDT Sun Apr 22 2018/ SHORT TERM /Tonight through Monday Night/... The main change to the forecast was to add a few areas to the flood watch as the axis of heavier rainfall has shifted a bit. Mid level and low level low pressure will meander over the Lower Mississippi River Valley through Monday. Currently, a surface low pressure system is situated across SW Mississippi. A warm front extends eastward from the center of the low. A long fetch of easterly winds off of the Atlantic and isentropic lift over the warm front will allow for widespread precipitation across the CWFA well into tomorrow. For much of today, the rainfall has been fairly light. However, the higher PWATS/deeper moisture and greater ascent are expected during the evening into the overnight hours. The axis of heavier rainfall has shifted a bit, but still remains roughly along and northwest of a line from Macon to Wilkes Counties. The greatest potential for thunderstorms remains in or nearest to the warm sector overnight. As the surface low over SW MS lifts a bit northward, the warm front will lift northward too. A few of the storms could be strong and an isolated severe thunderstorm is not out of the question. A little concerned about thunderstorms during the afternoon tomorrow. Still some lingering moisture on the backside of the departing widespread precip. Some decent mid level lapse rates are present, so thunderstorms (a few strong) are possible during the late morning and early afternoon hours. Strong east winds are expected overnight. Made no changes to the wind advisory. The highest impacts/gusts are expected across elevations aoa 200kft. NListemaa LONG TERM /Tuesday through Sunday/... Extended forecast is on track, overall. Late week dew points were struggling to match the latest model solutions, so have updated to reflect current thinking. Following the wet short term, additional wave of precip is expected late week, and have adjusted the Thursday evening/Friday morning pop and wx grids, particularly over the southern CWA, to better reflect secondary low pressure rotating through the upper level flow. Otherwise, minimal updates have been made aside from minor min/max temperature adjustments. Previous forecast discussion follows. 31 /Issued 453 AM EDT Sun Apr 22 2018/ Upper closed low slowly dampens and lifts north into the longwave energy by late Tuesday. Models indicating a bit more instability present - parts of east for Monday evening and then again Tuesday afternoon for the northern majority, so have included slight chance thunder with shower mention and trend highest pops to the north. Nam BUFR soundings indicate some decent low level lapse rates too and given a pretty low freezing level at 10 kft or lower, wouldn't be surprised if a few cells resulted in some small hail or graupel (especially Tuesday afternoon). Will need to watch for lingering flooding and runoff concerns into the beginning of the fcst period given the expected 3-4 inches mainly in the short term. Wednesday should be a brief reprieve ahead of a continued active pattern with only some slight to low end shower chances in the north ahead of another shortwave/frontal system for Wednesday night into Thursday (Euro a bit less progressive than the GFS). A second disturbance could impact the CWA as a quicker cold front with less enhanced moisture present for Friday (GFS) or slower system that cuts off farther south and taps into more Gulf moisture to make for a rainy Saturday (Euro). Have not bought into the less consistent Euro solution so for now have kept chance pops of showers for Thursday, slight pops Friday, and dry Saturday. Will fine tune given hopefully better consensus in future updates. Temps should stay generally a bit cooler than climo norms through period though expect some later period temps to be adjusted given aforementioned model inconsistency with active jetstream pattern. Baker HYDROLOGY... The Flood Watch has been expanded to include a larger portion of north and central Georgia based on the latest QPF guidance from WPC. This new guidance has shifted the highest rainfall amounts farther northeast than the previous forecast. Within the watch area, rainfall amounts of 2 to 4 inches are possible, with the highest amounts over portions of northeast Georgia, generally along the I-85 corridor and south of the Appalachian ridgeline, where 3 to 4 inches are likely. Although some of the watch area now have lower rainfall amounts than previously expected, will hold off on canceling the watch for any counties until later in the event. && .AVIATION... 00Z UPDATE... Widespread SHRA continues to move across the terminals this evening but no TS as of yet to accompany it. May be a break later tonight as there is a back edge to the precip over Alabama but this should be short lived as additional SHRA will develop late tonight. What has changed is it looks like there will be a quicker end to the sustained SHRA activity by 17Z and possible sooner. Will still need to carry a Prob30 for TSRA for the afternoon hours but otherwise just VCSH. Winds will continue to be an issued increasing to 20 and gusting to over 30 knots tonight. Cigs will largely remain IFR and then MVFR by tomorrow afternoon. //ATL CONFIDENCE...00Z UPDATE... Medium on TS potential. High on remaining elements. Deese && .PRELIMINARY POINT TEMPS/POPS... Athens 55 68 56 72 / 100 100 70 50 Atlanta 58 71 56 71 / 100 80 30 40 Blairsville 51 60 51 66 / 100 100 70 80 Cartersville 56 69 54 71 / 100 70 40 50 Columbus 62 77 57 75 / 100 40 10 20 Gainesville 54 64 55 69 / 100 100 60 60 Macon 60 78 56 75 / 100 80 30 20 Rome 56 70 54 71 / 100 70 40 50 Peachtree City 58 73 54 73 / 100 70 20 30 Vidalia 63 77 59 77 / 100 90 50 20 && .FFC WATCHES/WARNINGS/ADVISORIES... Flood Watch through Monday afternoon for the following zones: Baldwin...Banks...Barrow...Bartow...Bibb...Butts...Carroll... Catoosa...Chattooga...Cherokee...Clarke...Clayton...Cobb... Coweta...Crawford...Dade...Dawson...DeKalb...Douglas...Fannin... Fayette...Floyd...Forsyth...Gilmer...Gordon...Greene... Gwinnett...Hall...Hancock...Haralson...Harris...Heard...Henry... Jackson...Jasper...Jones...Lamar...Lumpkin...Macon...Madison... Meriwether...Monroe...Morgan...Murray...Newton...North Fulton... Oconee...Oglethorpe...Paulding...Peach...Pickens...Pike...Polk... Putnam...Rockdale...South Fulton...Spalding...Talbot... Taliaferro...Taylor...Towns...Troup...Union...Upson...Walker... Walton...White...Whitfield...Wilkes. Wind Advisory until 7 AM EDT Monday for the following zones: Banks...Barrow...Bartow...Bibb...Bleckley...Butts...Carroll... Catoosa...Chattahoochee...Chattooga...Cherokee...Clarke... Clayton...Cobb...Coweta...Crawford...Crisp...Dade...Dawson... DeKalb...Dooly...Douglas...Fannin...Fayette...Floyd...Forsyth... Gilmer...Gordon...Gwinnett...Hall...Haralson...Harris...Heard... Henry...Houston...Jackson...Jasper...Jones...Lamar...Lumpkin... Macon...Madison...Marion...Meriwether...Monroe...Morgan... Murray...Muscogee...Newton...North Fulton...Oconee...Paulding... Peach...Pickens...Pike...Polk...Pulaski...Rockdale...Schley... South Fulton...Spalding...Stewart...Sumter...Talbot...Taylor... Towns...Troup...Twiggs...Union...Upson...Walker...Walton... Webster...White...Whitfield...Wilcox. && SHORT TERM...Deese LONG TERM....Reaves AVIATION...Deese
Hazardous Weather Outlook National Weather Service Peachtree City GA 258 PM EDT Sun Apr 22 2018 GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 089>098-102>113-231000- 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- 258 PM EDT Sun Apr 22 2018 This Hazardous Weather Outlook is for portions of North and Central Georgia. .DAY ONE...This Afternoon and Tonight... A slow moving low pressure system will bring widespread rainfall to the area this tonight into early Tuesday. Total rainfall amounts of 2 to 4 inches are expected with locally higher amounts are possible, especially across northeast Georgia. Localized flooding is possible and a Flood Watch has been issued for portions of north and central Georgia through early Monday afternoon. Strong winds are expected tonight with east winds 15-25 mph gusting up to 40 mph with higher gusts possible in the northern higher elevations. Some trees could be downed with heavy rainfall and wet soils. A Wind Advisory has been issued accordingly. .DAYS TWO THROUGH SEVEN...Monday through Saturday... Flooding potential could linger through Monday given continued rain and runoff. Some storms could be strong in parts of the south and east Monday afternoon. The main threats would be small hail and lightning. Several other disturbances could push across the area Thursday through Saturday. There is still uncertainty on timing and strength of these systems so please monitor future updates.. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated but spotters are encouraged to report any damage or significant weather.
The national radar mosaic for the moment the first event began.
2 strong wind. Local standard time, as filed.
The broadcast media reported a tree blown down onto a home on West Withers Street in Lafayette. No injuries were reported.
The Georgia DOT reported a tree blown down onto I-20 east of mile marker 53. At least one vehicle struck the fallen tree resulting in one injury.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2018Every state in 2018This day in weather historyWarnings in Georgia, April 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 744075, 744077.