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fxus62 kjax 200145 
afdjax 


Area forecast discussion 
National Weather Service Jacksonville Florida 
845 PM EST Wednesday Nov 19 2008 


Update...cold high pressure has settled over the area and winds 
are calm except for the beaches and near the St. Johns River. 
A northwesterly mean 1000-500mb flow is pushing the marine stratocu farther 
away from the area. With clear skies and calm winds...temperatures 
that are currently in the middle/upper 30s inland will drop to freezing 
around 11pm to midnight. Observation at Mayport and jax NAS indicate a 
light breeze continues at the beaches and along the river where 
temperatures remain in the middle 40s. 


Afternoon highs were in the 50s and although colder than normal 
everywhere St Simons Island is only area that recorded a record 
low maximum temperature of 50. The previous record low maximum was 53 in 
1951...also the same year several other record low were set. 


Record lows are possible again tonight at gnv and jax with freeze 
conditions everywhere except the southeast portion. Instead of wind 
chills being a factor tonight...light or no winds will allow areas 
of frost to form even in places where the temperature barely reaches or 
remains just above freezing. Thus a frost advisory is necessary 
for St Johns and Flagler cos since temperatures are not anticipated to 
hit freezing for 2 or more hours. 


Record for November 20th... 
jax 30/1873 
gnv 30/1968 
amg 26/1951 
ssi 33/1951 


&& 


Aviation... 
clear skies and unlimited visibilities will continue through Thursday. 


&& 


Marine... 
winds continue to decrease...now down to 10 knots or less. Buoy 
41012 is still reporting 6 feet seas. Will wait until 11 PM to 
expire Small Craft Advisory for offshore segment amz474 as seas are expected to subside 
to 5 feet or less by that time. Will also remove scec wording over 
the nearshore zones where seas have subsided to 3 to 4 feet. 


&& 


Fire weather... 
all red flag warnings verified across northeast Florida today. A 
red flag warning is in effect again Thursday afternoon for all of 
NE Florida. 


&& 


Preliminary point temps/pops... 
amg 54 28 65 33 / 0 0 0 0 
ssi 51 38 64 42 / 0 0 0 0 
jax 54 29 67 40 / 0 0 0 0 
sgj 55 36 67 44 / 0 0 0 0 
gnv 57 27 67 38 / 0 0 0 0 
ocf 58 29 67 40 / 0 0 0 0 


&& 


Jax watches/warnings/advisories... 
Florida...red flag warning from 11 am to 5 PM EST Thursday for Alachua- 
Baker-Bradford-Clay-Columbia-Duval-Flagler-Gilchrist- 
Hamilton-Marion-Nassau-Putnam-St Johns-Suwannee-Union. 


Freeze warning from 2 am to 8 am EST Thursday for Clay-Duval- 
Marion-Nassau-Putnam. 


Freeze warning until 8 am EST Thursday for Alachua-Baker- 
Bradford-Columbia-Gilchrist-Hamilton-Suwannee-Union. 


Frost advisory from 4 am to 8 am EST Thursday for Flagler-St 
Johns. 


Georgia...none. 
Am...Small Craft Advisory for hazardous seas until 11 PM EST this 
evening for St Augustine to Flagler Beach Florida 20 nm to 60 nm 
offshore. 


&& 


$$ 


Trabert/Shuler/McAllister