338 
FXUS62 KJAX 272309
AFDJAX

Area Forecast Discussion
National Weather Service Jacksonville FL
608 PM EST Thu Feb 27 2020

.AVIATION
[Through 0000z Saturday]

Clear skies, with diminishing NW winds this evening, and 8-12kt W
winds Friday.

&&

.PREVIOUS DISCUSSION [348 PM EST]...

.Near Term.../through Tonight/...

High pressure will build from the west through Tonight, with cold 
advection continuing. Clear skies are expected. The combination of 
cold advection, and clear skies will result in an unseasonably cold 
night. There is enough of a pressure gradient though to 
keep winds from going completely calm. This light wind could be 
enough to hold temperatures up somewhat, and limit frost 
potential. Still expecting readings around freezing inland though,
with lowest readings likely in the Suwannee valley which will be 
more under the ridge. Freeze warnings go into affect with this 
forecast, in current watch zones. 

&&

.Short Term.../Friday through Monday/...

The high pressure ridge will sink to the south Friday, as another 
cold front approaches from the north. This front will move southeast
across the region Friday night, with yet another cold front passing 
through Saturday afternoon, producing scattered cloud cover. Each of
these boundaries will reinforce the cool airmass, but these frontal 
passages are expected to be dry. High pressure will build overhead 
Saturday night through Sunday. The high will build to the east on 
Monday. As the high builds more to the east Monday, moisture and 
clouds will increase on southerly flow. Monday is expected to remain
dry. 

Temperatures will trend below normal through Sunday, with Saturday 
night being the coldest night during this period, as the high builds
overhead. While temperatures are not forecast to reach freezing 
Saturday night, frost potential will be exist due to suspected near 
calm winds. Readings will return to near normal levels for Monday.        

&&

.Long Term.../Monday night through Thursday/...

The high will remain to the east through Tuesday night, continuing 
the increasingly moist southerly flow. A cold front will approach 
from the west Tuesday night, then sweep east across the area 
Wednesday into Wednesday night. Depending in part on whether the 
line ultimately passes during the day or night, a strong line of 
storms may accompany this frontal boundary. Rain fall chances will 
begin over western counties Tuesday night, with chances across the 
area Wednesday into Wednesday night. High pressure will then build 
from the west northwest Thursday.

Temperatures will trend above normal through Wednesday, then back 
closer to normal for Thursday.   

&&

.Marine...

High pressure will build across region from the west through 
Tonight. The ridge will move south Friday, with another cold front 
moving through Friday night, and yet another front Saturday. High 
pressure will build overhead Saturday night through Sunday. This 
high will build to the east Sunday night through Tuesday.
 
Rip Currents...Low Risk through Friday

&&

.Fire Weather...

Minimum RH levels will fall into the upper 20s to around 30 percent
range across much of the forecast area Friday afternoon. While winds
will be below red flag criteria for much of the day, winds are 
expected to increase to near criteria across SE GA during the 
afternoon. However, FM is expected to be higher than red flag 
criteria for GA. 

Minimum RH levels will be a little higher Saturday but still around 
30 percent. Dispersions will be on the high side both Friday and 
Saturday. 

&&



.PRELIMINARY POINT TEMPS/POPS...

AMG  31  59  37  59  34 /   0   0   0   0   0 
SSI  37  58  42  59  40 /   0   0   0   0   0 
JAX  33  61  41  63  38 /   0   0   0   0   0 
SGJ  38  60  42  63  42 /   0   0   0   0   0 
GNV  33  61  39  63  36 /   0   0   0   0   0 
OCF  33  61  40  64  36 /   0   0   0   0   0 

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...Freeze Warning from 3 AM to 8 AM EST Friday for Baker-Bradford-
     Eastern Alachua-Gilchrist-Hamilton-Inland Duval-Inland 
     Nassau-Northern Columbia-Southern Columbia-Suwannee-Union-
     Western Alachua.

GA...Freeze Warning from 3 AM to 8 AM EST Friday for Appling-Atkinson-
     Bacon-Brantley-Clinch-Coffee-Echols-Inland Camden-Inland 
     Glynn-Jeff Davis-Northeastern Charlton-Northern Ware-Pierce-
     Southern Ware-Wayne-Western Charlton.

AM...None.
&&