National Weather Service United States Department of Commerce

Tropical Weather Moving Closer to Texas and Florida

Harvey's remnant is forecast to regain tropical cyclone strength in the next day or two. Once Harvey starts impacting the Texas coast, up to 10 inches of rain will be possible over the next week. Another disturbance on the southern tip of Florida is not expected to strengthen, but it's slow movement could add up to 7 inches of rain over the next week. Heavy rain may produce flash flooding. Read More >


000
FXZS60 NSTU 230100
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
200 PM SST Tue Aug 22 2017

.Short term...
TONIGHT THROUGH THURSDAY NIGHT...Latest satellite imagery shows a
a broad area of showers associated with a surface trough,
upstream. Current model data show these showers moving across the
Samoan islands tonight through Thursday morning. Due to the nearly
stationary placement of this trough across the territory, will
issue a flash flood watch through Thursday morning as an abundant
amount of rainfall, heavy at times, with thunderstorms likely are
expected.

Moderate to Fresh easterlies will also remain across the forecast
area as a strong high pressure system remain far Southeast. By
Thursday, a downward trend in clouds and showers are suggested as
this trough moves further West.

.Long term...
FRIDAY THROUGH TUESDAY...Current model data show the
aforementioned high pressure still lingering Southeast, producing
gentle to moderate easterlies across the island chain through the
long term. There will be periods of showers as they are embedded
within the easterly flow. Hence, will maintain previous forecast
for the long term.

&&

.Marine...
Current PacIOOS Aunu`u buoy observations show seas remaining below
advisory thresholds in the past few hours. Latest Wave Watch
III/SWAN model output depict heights remaining below advisory
criteria through the week, then increase by the weekend as another
Southerly swell reaches Coastal waters. Hence, will cancel the
advisory for high surf this afternoon. However, will keep the
advisory for Small Crafts as moderate to fresh easterlies are
forecast to remain across the forecast area through the week.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory remains in effect
Flash Flood Watch is in effect

&&

$$

LUTU-MCMOORE