Weather

867 
fxhw60 phfo 080606 
afdhfo 


Area forecast discussion 
National Weather Service Honolulu HI 
800 PM HST sun Sep 7 2008 


Synopsis... 
light to moderate trade winds will diminish from Tuesday through the 
week. The stable atmosphere over the islands will limit windward 
rainfall...but Lee areas may experience increased clouds and a few 
showers. 


&& 


Discussion... 
typical trade wind weather continues across the state this evening. 
The subtropical ridge is slowly lifting north to near 30n with a 
weak upper low just east of the islands. Scattered showers have 
continued to hit windward locations with isolated showers travelling 
over to the leeward sides. Rainfall amounts have been light with 
these passing showers...the biggest totals this afternoon and 
evening have been across windward Maui with 0.50 of an inch at Puu 
Kukui and 0.12 of an inch at Hana. Rainfall has increased at Hilo 
with over one-third of an inch in the past hour. Elsewhere spotty 
totals of a few hundredths of an inch have fallen. 


The subtropical ridge to the north of the state weakens on Tuesday 
and Wednesday. This results in lighter trades Tuesday and 
Wednesday. GFS and ec shows that the trades will be at their 
lightest on Wednesday...allowing sea breezes to set up. Afternoon 
showers will develop in interior sections...but enough northeast 
transport flow will remain to push the clouds and showers from 
interior sections to leeward sections. Still appears that the 
atmosphere will be stable with marine inversions below 700 mb 
keeping the showers light. 


The trades remain light through the end of the week as the 
subtropical ridge north of the state stays weak. 


&& 


Marine... 
the south swell and a new south southeast swell are combining to 
keep surf at or above advisory levels. These swells will diminish 
slowly after Tuesday. 


&& 


Hfo watches/warnings/advisories... 
high surf advisory until 6 PM HST Tuesday for south facing shores. 


&& 


$$ 


Brenchley