U.S. Weather Extremes for
Saturday, October 20, 2018

High Temperature


108°F at New Orleans/Nas, LA

Low Temperature


16°F at Alamosa Muni(awos), CO
16°F at Williston/Sloulin, ND

High Precipitation


1.53in at Troy Municipal, AL


Data for lower 48 states and courtesy of
NWS-CPC


Select the NWS Forecast Office you wish to view (Defaults to Atlanta)
NWS Area Forecast Discussion
AFD issued by the Atlanta/Peachtree City, GA NWS forecast office.

000
FXUS62 KFFC 211908
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
308 PM EDT Sun Oct 21 2018


.SHORT TERM /Tonight through Monday Night/...

Very dry and cool airmass has settled in across the Southeast region
with temperatures ranging from the lower 50s across north GA to the
mid 60s far south areas (Americus to Vidalia). These temperatures
are running about 10-15F degrees below normal for mid-late October.
In case you were wondering, this is only the third time since August
25th we (ATL) has officially seen below normal temps for a 24-hour
period.

Clear skies, light winds and a dry airmass will allow temps to drop
rapidly after sunset this evening. Widespread 30s will result in
areas of frost (dewpoint depressions will be < 5F). Hence, will
issue a Frost Advisory between 2AM and 8AM for much of the area
except the far southern counties where min temps will generally be
in the lower 40s. A Freeze Warning remains in effect for Towns and
Union counties where slightly colder temps are expected near the TN
border.

Dry conditions will continue into Monday and Monday night but a
gradual return (E-SE) flow will allow for an increase in low-lvl
moisture/clouds. With the shift in wind direction, a gradual warming
trend to more seasonal levels will occur as well.

DJN.83

&&

.LONG TERM /Tuesday through Sunday/...

Quiet start to the long term period with nearly zonal flow in place,
continuing dry weather across the area until around Thursday.

Meanwhile, a surface low is expected to develop to our west over the
Gulf and Gulf states this week and will traverse east before
affecting our area on what looks to be at least Thursday through
Friday. Models are still showing some differences as to timing and
location of the low, with the GFS keeping the low further south
of our area and pushing moisture into the area SW GA faster than
the ECMWF. Decided to go with a model blend bringing slight chance
and chance pops across the SW on Thursday and spreading across
the rest of the area on Friday.

After that, a strong low pushes into the region, spreading moisture
back across northern portions of the area late Saturday through
Sunday.

High temperatures for Tuesday and Wednesday are in the 60s and 70s,
with temperatures in the 50s and 60s expected through the rest of
the expended. Low temperatures are generally in the 40s and 50s
through the extended.

Reaves


&&

.AVIATION...
18Z Update...
VFR conditions will prevail through the next 24-30 hours. Winds
have already gone N/NE so look for that trend (to the east) to
continue through Monday as sfc high becomes centered over the
Carolinas by morning.

//ATL Confidence...18Z Update...
High all elements.

DJN.83

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          38  68  46  71 /   0   0   0   0
Atlanta         41  66  48  69 /   0   0   0   0
Blairsville     33  63  39  65 /   0   0   0   0
Cartersville    35  66  43  69 /   0   0   0   0
Columbus        41  70  52  72 /   0   0   5   0
Gainesville     39  65  45  69 /   0   0   0   0
Macon           35  69  50  72 /   0   0   5   5
Rome            34  66  43  69 /   0   0   0   0
Peachtree City  34  67  46  70 /   0   0   0   0
Vidalia         42  72  55  73 /   0   0   5   5

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Frost Advisory from 2 AM to 8 AM EDT Monday for the following
zones: Baldwin...Banks...Barrow...Bartow...Butts...Carroll...
Catoosa...Chattooga...Cherokee...Clarke...Clayton...Cobb...
Coweta...Dade...Dawson...DeKalb...Douglas...Fannin...Fayette...
Floyd...Forsyth...Gilmer...Glascock...Gordon...Greene...
Gwinnett...Hall...Hancock...Haralson...Heard...Henry...Jackson...
Jasper...Jefferson...Jones...Lamar...Lumpkin...Madison...
Meriwether...Monroe...Morgan...Murray...Newton...North Fulton...
Oconee...Oglethorpe...Paulding...Pickens...Pike...Polk...
Putnam...Rockdale...South Fulton...Spalding...Taliaferro...
Troup...Upson...Walker...Walton...Warren...Washington...White...
Whitfield...Wilkes.

Freeze Warning from midnight tonight to 8 AM EDT Monday for the
following zones: Towns...Union.

&&

$$

SHORT TERM...DJN.83
LONG TERM....Reaves
AVIATION...DJN.83

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