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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Saturday
• 
• High: 84 °
• Low: 75 °
• Rain Showers

• Sunday
• 
• High: 84 °
• Low: 75 °
• Rain Showers

• Monday
• 
• High: 84 °
• Low: 75 °
• Chance of T-Storms

• Tuesday
• 
• High: 86 °
• Low: 75 °
• Chance of T-Storms

• Wednesday
• 
• High: 86 °
• Low: 75 °
• Mostly Cloudy

Area forecast discussion 
National Weather Service tiyan GU 
421 PM chst Sat may 25 2013 


Synopsis...gentle trade-winds and a few showers prevailed 
over the islands this afternoon. Expect little change the 
next ten days. 




&& 


Discussion... 
weather satellite and radar show a few showers passing over the 
marianas this afternoon. Models indicate little change through 
the forecast. The gfs40 and MOS suggest that only a slight chance 
of showers are expected through Monday night. Feel that there is 
enough shower coverage in area to keep isolated through the 
forecast. 


Upper-level trough pushes to the south of the area by Tuesday 
night. Upper-level divergence covers the area in the wake of this 
trough. While this usually would be the recipe for enhanced 
precipitation deep layer relative humidity will be lacking so 
only isolated is expected. 


&& 


Marine... 
an east trade-wind swell will persist through the forecast. Surf 
on east facing reefs will be 4 to 6 feet the next few days. 
Expect that the rip current risk will remain low through the 
forecast. Combined seas of 2 to 4 feet today and tonight will 
decrease to 3 to 4 feet Thursday. 


&& 


Eastern micronesia... 
trade-wind showers are closing in on Majuro this evening...but 
Kosrae and Pohnpei will see dry weather overnight. Afternoon 
forecast shows improved conditions at Kosrae and Pohnpei...but 
showers passing over the Marshalls this evening will reach the 
two locales by tomorrow morning. Satellite shows widespread 
showers near and east of the date line...but models downplay this 
feature over the next few days as showers shift west. By 
midweek...models do show a convergence zone setting up across the 
region that could produce a wetter trend for the last half of the 
week. 


&& 


Western micronesia... 
visible satellite shows weather to be confined in two 
locations...one west of Koror...and another just south of Chuuk. 
Showers and thunderstorms near Chuuk have tapered considerably 
during the day. Meanwhile...a surface trough between Koror and 
Yap have maintained convection there. Kept a slight chance of 
thunder for Yap tonight due to its proximity to the weather 
there. Some showers and possibly a thunderstorm could develop 
within the southern coastal waters of Yap this evening. Satellite 
trends suggest a dry night as well at Koror...so forecast shows 
improved conditions there overnight...but kept a slight chance of 
thunder. Models depict a slightly wetter pattern encompassing the 
locales by Monday with moist cross-equatorial southeast winds 
converging with the trades between 4n and 7n. For now...forecast 
will keep with inherited forecast for the long-term. 


&& 


Gum watches/warnings/advisories... 
GU...none. 
Marianas waters...none. 
&& 


$$ 


Ziobro/M. Aydlett