Alert archive / Georgia / Special Weather Statements in 2018
Special Weather Statement, NWS Atlanta, GA
NWS Atlanta, GA issued this special weather statement at Jul 16, 2018, 3:30 PM EDT for Gwinnett County, Georgia. It was in force for 30 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 16, 2018, 3:30 PM EDT (19:30 UTC)
- Expired
- Jul 16, 2018, 4:00 PM EDT
- In force
- 30 min
- Issued by
- NWS Atlanta, GA
- Wind
- 40
County Gwinnett County, GA
The radar
The Atlanta radar (KFFC), 91 km from the middle of the area, began a volume at 19:32 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, 7.5 hours before the alert went out and 87 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
- 842 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 17 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 16, 1:35 PM EDT, 1 hour 55 minutes earlier.
Area forecast discussion, Jul 16, 1:35 PM EDT, 1 hour 55 minutes before
Area Forecast Discussion...Updated for Aviation National Weather Service Peachtree City GA 135 PM EDT Mon Jul 16 2018 .UPDATE... 18z Aviation update below. 41 && .PREV DISCUSSION... /Issued 345 AM EDT Mon Jul 16 2018/ SHORT TERM /Today through Tuesday/... High PWAT regime continues today along with some aided upper forcing from a weak shortwave, warranting likely pops area-wide peaking with daytime heating which could linger a bit longer into the overnight given how slow the trough axis is to progress. Thermal profiles indicate tall skinny CAPE of 2000-3000 J/kg and given how the lapse rates are not impressive given the well saturated column and how the last several days have trended, thinking severe convection is not anticipated and primarily some strong storms instead. Main threats will be isolated flooding from the precip efficiency, occasional lightning and gusty winds. The greater moisture axis does shift farther south into central GA for Tuesday, though should be enough influence from the aforementioned upper wave and also a weak front approaching the north by late afternoon/evening that will still warrant likely pops for the majority of the area. Storms should have less chance for flood potential given some mid/upper level drier air advecting in and resultant PWATs down to about 1.5 inches. Temp fcst slightly lower today in the upper 80s for most given greater precip coverage then a bit higher Tuesday with some drier columns. Baker && .LONG TERM /Tuesday Night through Sunday/... Medium-range models continue to show an amplifying upper-level pattern developing through the majority of the extended forecast period. Frontal boundary settling into the southern portion of the forecast area as we begin the period concentrates best POPs across the southern half of the area mid-week. Strong short wave and associated surface front should increase POPs areawide as we head into the weekend. With moderate mid-level winds associated with this system, combined with enhanced forcing and at least moderate instability, we will need to keep an eye on the potential for an increased severe thunderstorms threat. Noticeable divergence between the GFS and the ECMWF for the latter portion of the period, but I have kept at least chance POPs through the end of this forecast cycle. 20 && .AVIATION... 18Z Update... Some mvfr ceilings were lingering...but should continue to improve to widespread sct-bkn035-045. Showers and thunderstorms should develop in any location with no real feature to focus on. There is also the potential showers and storms could linger beyond 00z this evening into portions of the overnight but not confident which taf sites would be affected. Winds should remain on the west side...mostly southwesr 5 to 7kt and diminish overnight. Some potential for ifr again overnight with such a moist airmass. //ATL Confidence...18Z Update... High on all elements except medium on ifr for Tuesday morning. 41 && .PRELIMINARY POINT TEMPS/POPS... Athens 87 72 90 72 / 70 50 60 40 Atlanta 88 73 89 73 / 70 50 60 40 Blairsville 82 67 84 67 / 70 50 60 30 Cartersville 88 72 90 71 / 70 50 60 40 Columbus 90 75 90 74 / 60 50 70 50 Gainesville 86 72 89 71 / 70 50 60 40 Macon 89 73 90 73 / 60 50 60 40 Rome 89 72 90 71 / 60 40 60 40 Peachtree City 89 72 89 72 / 70 50 70 40 Vidalia 89 74 89 74 / 60 50 60 40 && .FFC WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...41 LONG TERM....20 AVIATION...41
Hazardous weather outlook, Jul 16, 1:00 PM EDT, 2 hours 30 minutes before
Hazardous Weather Outlook National Weather Service Peachtree City GA 100 PM EDT Mon Jul 16 2018 GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 089>098-102>113-171000- 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- 100 PM EDT Mon Jul 16 2018 This Hazardous Weather Outlook is for portions of North and Central Georgia. .DAY ONE...This Afternoon and Tonight... Scattered to numerous thunderstorms are expected across north and central Georgia this afternoon and tonight, most numerous between 3 and midnight, although isolated storms will continue overnight. A few of these storms could also be strong, producing gusty winds and occasional lightning. However, the main hazard from the thunderstorms will be locally heavy rainfall. The heavy rain could cause temporary street flooding and ponding of water in low lying areas. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday... Scattered to numerous thunderstorms are expected Tuesday through Sunday, mainly in the afternoon and evening hours each day. A few strong to severe thunderstorms will be possible each day with strong, gusty winds, frequent lightning, and very heavy rainfall. .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.
In the hours before
Special weather statement, Jul 16, 2:32 PM EDT, 58 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
232 PM EDT MON JUL 16 2018
GAZ022-033-034-161900-
North Fulton GA-Forsyth GA-Gwinnett GA-
232 PM EDT MON JUL 16 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTH FULTON...SOUTHWESTERN
FORSYTH AND NORTHWESTERN GWINNETT COUNTIES UNTIL 300 PM EDT...
At 232 PM EDT...a strong thunderstorm was over Johns Creek, or 11
miles southwest of Cumming...moving east at 10 mph.
HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
ground lightning.
IMPACT...Expect minor damage to tree limbs and blowing around of
light...unsecured objects.
Some locations in the path of this storm include
Johns Creek, Alpharetta, Duluth, Sugar Hill, Suwanee, Berkeley Lake
and Brookwood.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.
LAT...LON 3397 8426 3410 8428 3416 8408 3395 8406
TIME...MOT...LOC 1832Z 268DEG 9KT 3405 8422
HAIL...0.25IN
WIND...40MPHSpecial weather statement, Jul 16, 2:51 PM EDT, 39 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
251 PM EDT MON JUL 16 2018
GAZ025-034-035-047-161915-
Jackson GA-Walton GA-Barrow GA-Gwinnett GA-
251 PM EDT MON JUL 16 2018
...SIGNIFICANT WEATHER ADVISORY FOR WESTERN JACKSON...NORTHWESTERN
WALTON...WESTERN BARROW AND NORTHEASTERN GWINNETT COUNTIES UNTIL 315
PM EDT...
At 250 PM EDT...a strong thunderstorm was over Hog Mountain, or near
Lawrenceville...moving east at 15 mph.
HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
ground lightning.
IMPACT...Expect minor damage to tree limbs and blowing around of
light...unsecured objects.
Some locations in the path of this storm include
Lawrenceville, Winder, Buford, Braselton, Auburn, Dacula, Hoschton,
Carl, Rest Haven, Bold Springs, County Line, Harbin, Chateau Elan and
Hog Mountain.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.
LAT...LON 3412 8393 3410 8387 3411 8385 3409 8370
3386 8378 3397 8404 3413 8399
TIME...MOT...LOC 1850Z 289DEG 11KT 3405 8393
HAIL...0.25IN
WIND...40MPHSpecial weather statement, Jul 16, 3:01 PM EDT, 29 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
301 PM EDT MON JUL 16 2018
GAZ022-023-033-034-161930-
Hall GA-North Fulton GA-Forsyth GA-Gwinnett GA-
301 PM EDT MON JUL 16 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HALL...NORTH
FULTON...SOUTHWESTERN FORSYTH AND NORTHWESTERN GWINNETT COUNTIES
UNTIL 330 PM EDT...
At 300 PM EDT...a cluster of strong thunderstorms was located near
Aqualand Park to Mechanicsville...and moving east at 20 mph.
HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
ground lightning.
IMPACT...Expect minor damage to tree limbs and blowing around of
light...unsecured objects.
Some locations in the path of these storms include
Cumming, Johns Creek, Alpharetta, Duluth, Sugar Hill, Suwanee,
Buford, Lilburn, Norcross, Berkeley Lake, Buford Dam-Lake Lanier
Parks, Brookwood, Mechanicsville and Lake Lanier Islands.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.
LAT...LON 3419 8397 3386 8407 3390 8423 3391 8425
3395 8425 3422 8417
TIME...MOT...LOC 1900Z 292DEG 19KT 3417 8396 3392 8425
HAIL...0.25IN
WIND...40MPHSpecial weather statement, Jul 16, 3:16 PM EDT, 14 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
316 PM EDT MON JUL 16 2018
GAZ023-025-034-035-037-047-161945-
Hall GA-Jackson GA-Walton GA-Barrow GA-Gwinnett GA-Oconee GA-
316 PM EDT MON JUL 16 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HALL...SOUTHWESTERN
JACKSON...NORTHWESTERN WALTON...BARROW...EASTERN GWINNETT AND
NORTHWESTERN OCONEE COUNTIES UNTIL 345 PM EDT...
At 316 PM EDT...a strong thunderstorm was over Carl, or near
Winder...moving southeast at 20 mph.
HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
ground lightning.
IMPACT...Expect minor damage to tree limbs and blowing around of
light...unsecured objects.
Some locations in the path of this storm include
Lawrenceville, Winder, Monroe, Snellville, Buford, Loganville,
Braselton, Auburn, Flowery Branch, Dacula, Grayson, Statham,
Hoschton, Walnut Grove, Bogart, Bethlehem, Between, Carl, Jersey and
Rest Haven.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.
LAT...LON 3401 8348 3399 8349 3400 8350 3399 8350
3398 8351 3397 8354 3395 8353 3368 8378
3384 8408 3419 8397
TIME...MOT...LOC 1916Z 301DEG 15KT 3400 8382
HAIL...0.25IN
WIND...40MPHSpecial weather statement, Jul 16, 3:23 PM EDT, 7 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
323 PM EDT MON JUL 16 2018
GAZ003-162000-
Catoosa GA-
323 PM EDT MON JUL 16 2018
...SIGNIFICANT WEATHER ADVISORY FOR CATOOSA COUNTY UNTIL 400 PM
EDT...
At 323 PM EDT...a strong thunderstorm was over Boynton, or near
Ringgold...moving northeast at 10 mph.
HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
ground lightning.
IMPACT...Expect minor damage to tree limbs and blowing around of
light...unsecured objects.
Some locations in the path of this storm include
Ringgold, Fort Oglethorpe, Boynton, Beaumont, Indian Springs,
Graysville, Blue Spring, Apison and East Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.
LAT...LON 3498 8498 3497 8500 3496 8500 3479 8519
3481 8520 3485 8520 3486 8525 3488 8527
3494 8527 3499 8520 3499 8499
TIME...MOT...LOC 1923Z 227DEG 9KT 3491 8522
HAIL...0.25IN
WIND...40MPHSpecial weather statement, Jul 16, 3:30 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
330 PM EDT MON JUL 16 2018
GAZ022-023-033-034-162000-
Hall GA-North Fulton GA-Forsyth GA-Gwinnett GA-
330 PM EDT MON JUL 16 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HALL...NORTH
FULTON...SOUTHWESTERN FORSYTH AND NORTHWESTERN GWINNETT COUNTIES
UNTIL 400 PM EDT...
At 330 PM EDT...a strong thunderstorm was over Brookwood, or 7 miles
south of Cumming...moving southeast at 10 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 this storm include
Cumming, Johns Creek, Alpharetta, Duluth, Sugar Hill, Suwanee,
Buford, Buford Dam-Lake Lanier Parks, Brookwood and Lake Lanier
Islands.
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 3410 8427 3420 8414 3417 8397 3392 8406
TIME...MOT...LOC 1930Z 301DEG 9KT 3409 8413
WIND...40MPHThe office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 9:02 PM EDT | Special Weather Statement | FFC | Haralson | 28 min |
| Jul 15, 9:22 PM EDT | Special Weather Statement | FFC | Paulding | 38 min |
| Jul 15, 9:27 PM EDT | Special Weather Statement | FFC | Haralson | 33 min |
| Jul 15, 9:49 PM EDT | Special Weather Statement | FFC | Douglas | 26 min |
| Jul 15, 10:08 PM EDT | Special Weather Statement | FFC | Haralson, Paulding | 37 min |
| Jul 15, 10:16 PM EDT | Special Weather Statement | FFC | Douglas | 29 min |
| Jul 15, 10:55 PM EDT | Special Weather Statement | FFC | Cobb | 35 min |
| Jul 16, 12:16 AM EDT | Special Weather Statement | FFC | Dawson, Lumpkin | 59 min |
| Jul 16, 12:20 AM EDT | Special Weather Statement | FFC | DeKalb, Forsyth | 55 min |
| Jul 16, 1:10 AM EDT | Special Weather Statement | FFC | Dawson, Lumpkin | 80 min |
| Jul 16, 1:44 AM EDT | River Flood Warning | FFC | Fulton, Gwinnett | 2 hr |
| Jul 16, 1:07 PM EDT | Special Weather Statement | FFC | Union | 38 min |
| Jul 16, 1:37 PM EDT | Special Weather Statement | FFC | Whitfield | 38 min |
| Jul 16, 1:39 PM EDT | Special Weather Statement | FFC | Union | 36 min |
| Jul 16, 2:11 PM EDT | Special Weather Statement | FFC | Gordon | 49 min |
| Jul 16, 2:15 PM EDT | Special Weather Statement | FFC | Cobb | 30 min |
| Jul 16, 2:32 PM EDT | Special Weather Statement | FFC | Gwinnett | 28 min |
| Jul 16, 2:51 PM EDT | Special Weather Statement | FFC | Barrow | 24 min |
| Jul 16, 3:01 PM EDT | Special Weather Statement | FFC | Gwinnett | 29 min |
| Jul 16, 3:16 PM EDT | Special Weather Statement | FFC | Barrow, Gwinnett, Walton | 29 min |
| Jul 16, 3:23 PM EDT | Special Weather Statement | FFC | Catoosa | 37 min |
| Jul 16, 3:46 PM EDT | Special Weather Statement | FFC | Barrow | 29 min |
| Jul 16, 4:12 PM EDT | Special Weather Statement | FFC | Rockdale | 33 min |
| Jul 16, 4:47 PM EDT | Special Weather Statement | FFC | Montgomery, Toombs | 28 min |
| Jul 16, 5:00 PM EDT | Special Weather Statement | FFC | Wheeler | 30 min |
| Jul 16, 5:21 PM EDT | Special Weather Statement | FFC | Montgomery | 24 min |
| Jul 16, 6:45 PM EDT | Special Weather Statement | FFC | Carroll | 30 min |
| Jul 16, 7:21 PM EDT | Special Weather Statement | FFC | Carroll | 24 min |
| Jul 16, 7:45 PM EDT | Special Weather Statement | FFC | Carroll | 30 min |
Nearby
Special Weather Statements in Georgia, 2018Every special weather statement in 2018
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.