Special Weather Statement, NWS Atlanta, GA

Area Forecast Discussion
National Weather Service Peachtree City GA
330 PM EDT Thu Jun 21 2018

.SHORT TERM /Tonight through Friday Night/...

The closed upper low west of the MS River should drift southeast
into the OH Valley during the short term. This will keep GA in a
broad trough with southwest winds bringing Gulf moisture across the
area. Weak short waves will rotate through the trough and support
the development of showers and thunderstorms. The convection will be
enhanced by diurnal heating but expect some storms to linger
overnight...mainly north and west. Moderate instability this
afternoon and Friday afternoon could support a few strong storms
with damaging winds and heavy rain. Otherwise not as hot mainly
north and west due to more clouds...but much of central GA will
still reach into the low and mid 90s with overall fewer clouds and
lower chances for thunderstorms.

41

.LONG TERM /Saturday through Thursday/...

Only tweaks to the long term based on the latest guidance.

BDL

PREVIOUS DISCUSSION...

Unsettled period remains in place for the extended period.
Aforementioned parent low will continue to lift northeastward into
the weekend, and with it the best rain chances. As zonal flow sets
up over the region it its wake, lingering surface moisture and
disturbances aloft will keep shower and thunderstorms chances over
the area Saturday. Riding aloft will build back into the area
Sunday and into early next week, but with moisture remaining
trapped under the high, diurnal convection is still expected each
day through the extended.

Temperatures remain warm through the weekend and into next week.
Increased cloud cover and precip activity could assist in keeping
temperatures a few degrees lower Saturday. With dewpoints in the
70s and above normal temperatures, heat index values will creep
into the lower 100s several days, particularly over portions of
central and eastern Georgia. Although sub-criteria those spending
prolonged periods outdoors should take frequent breaks and drink
plenty of water.

31

&&

.AVIATION...
18Z Update...

Ceilings should be vfr this afternoon...ranging from BKN040-050 and
then scattering this evening. Expect some mvfr ceilings to form
toward sunrise and then gradually lift during the morning. Showers
and thunderstorms will be more widespread this afternoon and evening
and have added a tempo to all taf sites. Winds will remain on the
west side. Think Friday will be mostly a repeat of today.

//ATL Confidence...18Z Update...
Medium on ceiling trends.
Medium to high on all else.

41

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          71  89  70  89 /  70  60  40  50
Atlanta         72  88  72  88 /  60  60  50  50
Blairsville     66  81  64  83 /  70  60  60  50
Cartersville    70  87  69  87 /  70  60  50  50
Columbus        74  91  74  92 /  50  50  20  50
Gainesville     70  86  69  86 /  70  60  50  50
Macon           74  92  73  92 /  50  50  20  50
Rome            71  87  69  88 /  70  60  50  50
Peachtree City  72  88  71  88 /  60  50  40  50
Vidalia         76  93  75  94 /  30  30  20  30

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...41
LONG TERM....BDL
AVIATION...41

Hazardous Weather Outlook
National Weather Service Peachtree City GA
311 PM EDT Thu Jun 21 2018

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-221915-
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-
311 PM EDT Thu Jun 21 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 this afternoon
into tonight, most so over north Georgia. A few storms
could be strong to severe with the main hazards being strong
gusty winds, frequent lightning and isolated flooding from
heavy rainfall.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

There is a chance of thunderstorms everyday for the next week,
mainly during the afternoon and evening hours. A few storms
could be strong to severe each day with gusty winds, frequent
lightning and isolated flooding from heavy rainfall.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight, but spotters
are encouraged to submit reports of any severe weather and flooding
through the web by going to weather.gov/atlanta

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