Scientific Forecaster Discussion

NWS Discussion
			
				

Area forecast discussion 
National Weather Service Tallahassee Florida 
340 PM EDT Thu may 23 2013 




Near term [through tonight]... 
a few showers are already forming early this afternoon ahead of a 
surface thetae gradient over parts of southeast Georgia, and these 
may develop southwestward into the eastern Florida Big Bend. Thus, 
the 20% pop through 00 UTC was maintained, with a dry forecast 
thereafter as drier air finally advects into the majority of our 
forecast area. With the arrival of drier air, it should be a 
mostly clear night with minimal fog concerns. Lows will remain 
close to seasonal normals. 


&& 


Short term [friday through Saturday night]... 
upper pattern across the Continental U.S. Is forecast to remain amplified 
through the weekend, with troughs along the east and west coasts, 
and a ridge in place over the central states. The northwest flow 
across the deep south tonight and Friday will push a cold front 
through the area. The main impact of the cold front will be to 
usher in a much drier airmass, which will result in cooler 
overnight lows through the weekend. Expect to see low temperatures 
in the lower to mid 50s Saturday and Sunday mornings. 


&& 


Long term [sunday through thursday]... 
the overall pattern is expected to remain rather stagnant through 
much of next week, with the troughs in place along the coasts and 
the ridge over the center of the country. This will keep the 
weather generally dry with temperatures close to seasonal norms. 
European model (ecmwf) is a bit more amplified with the pattern, which may lead to 
a few more showers over the Georgia zones by mid to late next 
week. 


&& 


Aviation [through 18z friday]... 
outlook is VFR for the entire duration of the forecast. Any -shra 
this afternoon should be southeast of vld and tlh. Some VFR ceilings 
are possible this afternoon at tlh and vld, but skies should clear 
overnight. Winds will continue to be out of the northwest, but 
gusts should diminish around 22-23 UTC. 


&& 


Marine... 
offshore winds will increase to near advisory levels Friday 
night, in the wake of a cold front. Winds and seas will diminish 
by late Saturday, as high pressure builds over the waters, and 
remain minimal through early next week. 


&& 


Fire weather... 
the Fire Weather Watch for tomorrow has been maintained as is, 
due to some continued uncertainty as to precise values of minimum 
relative humidity and wind speed. Either way, it is likely that conditions in southeast 
Alabama and the interior Florida Panhandle will be marginal for 
red flag conditions. A decision on upgrading to a rfw will be made 
later tonight. Otherwise, a drier air mass will be in place over 
the region from Friday into the weekend. High dispersions are 
likely on Friday over all of North Florida. 


&& 


Hydrology... 
no hydrologic concerns into next week. 


&& 


Preliminary point temps/pops... 
Tallahassee 65 90 54 86 53 / 10 10 0 0 0 
Panama City 72 89 63 83 64 / 10 10 0 0 0 
Dothan 66 88 54 86 57 / 10 10 0 0 0 
Albany 64 86 52 84 55 / 10 10 0 0 0 
Valdosta 63 87 54 84 52 / 10 10 0 0 0 
Cross City 65 91 56 87 54 / 10 10 0 0 0 
Apalachicola 70 88 64 82 64 / 10 10 0 0 0 


&& 


Tae watches/warnings/advisories... 
Florida...Fire Weather Watch from Friday afternoon through Friday 
evening for Calhoun-Gadsden-Holmes-inland Walton-Jackson- 
Liberty-Washington. 
Georgia...none. 
Alabama...Fire Weather Watch from Friday afternoon through Friday 
evening for Coffee-Dale-Geneva-Henry-Houston. 
GM...none. 


&& 


$$ 
Near term...lamers 
short term...Camp 
Long term...Camp 
aviation...lamers 
marine...Camp 
fire weather...lamers/Walsh 
hydrology...Camp