Scientific Forecaster Discussion

NWS Discussion
			
				

Area forecast discussion 
National Weather Service Miami Florida 
353 am EDT Friday may 24 2013 


Discussion... 


An east-west oriented cold front currently entering the southeast 
states from the north will continue to move southward today and is 
forecast to enter North Florida and the Panhandle later today. As it 
moves southward an upper level ridge will begin to build across the 
region and drier middle to upper air will also start to build southward 
into the region with forecast precipitable waters  around 1.3 inches by this 
afternoon. 


For today...the forecast is for isolated showers and thunderstorms 
mainly expected in the interior regions during the afternoon and 
early evening. 


For Saturday...the front is forecast to continue moving southward 
and enter South Florida tonight into Saturday while becoming diffuse 
and with drier air expected to continue entering the region with 
forecast precipitable waters  only around one inch with the forecast indicating 
just a slight chance of showers across the southern portions of the 
peninsula and adjacent waters. 


By Sunday the front is forecast to continue dissipating across the 
region with high pressure building across the Florida Peninsula and 
overall stable weather expected. 


Over the weekend there will a cooling trend as the front continues 
southward with temperatures across the East Coast metropolitan areas on 
Sunday forecast to be in the lower 80s and the Naples metropolitan areas in 
the middle to upper 80s. Temperatures will slowly rebound into early 
next week. 


For the extended forecast...as high pressure builds into the western 
Atlantic a surge of moisture is forecast to enter the region from 
the Caribbean by Tuesday and continue through the remainder of the 
work week with a chance of showers and thunderstorms as an upper 
level trough builds into the eastern Gulf during this period. 


There will be increasing threat of rip currents for the Atlantic 
coast beaches over the weekend into early next week as winds and 
seas respond to an increasing pressure gradient forecast to build 
across the western Atlantic. 


&& 


Marine... 


The pressure gradient will increase across the region over 
the weekend as low pressure builds into the Atlantic sea board and 
high pressure builds into the southeast U.S. By Saturday winds 
across the South Florida Atlantic waters are forecast to be in the 
14 to 18 knot range with that trend continuing into at least 
mid-week. By late Saturday Atlantic seas are forecast to increase to 
3 to 5 feet and more or less remain in that range into mid-week. 


For the South Florida Gulf waters...winds in the 15 to 18 knot range 
are forecast by early Sunday with off shore seas forecast to be 3 to 
4 feet range with that range forecast to continue into early next 
week. 


A pre-cautionary statement will likely be needed over the weekend 
for portions of the Atlantic and Gulf waters if the current 
forecast trend continues. Will have to wait and see if the future 
guidance continues this trend. 


&& 


Fire weather... 


As a cold front and drier air is forecast to move southward into 
the region through the weekend...minimum relative humidities could 
reach the upper thirties across Glades County today and then 
by Sunday across Glades...Hendry and interior portions of Collier 
County. 


&& 


Preliminary point temps/pops... 
West Palm Beach 90 72 84 72 / 10 20 10 - 
Fort Lauderdale 90 76 86 74 / 10 10 10 - 
Miami 92 75 87 74 / 10 10 20 0 
Naples 90 73 91 65 / 10 10 10 - 


&& 


Mfl watches/warnings/advisories... 
Florida...none. 
Am...none. 
GM...none. 
&& 


$$ 


Discussion/marine/fire...60/bd 
aviation/radar...57/dg