Current Conditions
Temp3.0 C
RH30 %
WindSE 19 mph
RoadOpen (4x4)
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Hawaiian Islands Synoptic Discussion and Guidance

FXHW60 PHFO 260641

Area Forecast Discussion
National Weather Service Honolulu HI
830 PM HST THU AUG 25 2016

Locally breezy trade winds will continue as a high pressure persists
to our north. Passing low clouds and showers will favor windward and
mauka areas through early next week. A pair of tropical cyclones
expected to move westward across the central Pacific may affect the
main Hawaiian Islands beginning late next week, possibly bringing
more active weather.


A surface high pressure residing far north-northeast of the islands
is bringing moderate to locally breezy trade winds across area this
evening. Low clouds embedded in the winds are reaching the state at
times, providing some showers mainly to windward and mountain areas.
An area of low clouds reached the Big Island earlier this evening
will keep the windward areas of that island a little more cloudy and
showery through the rest of the night into early Friday morning.
Elsewhere mainly fair weather prevails, with some increase in low
clouds overnight possible, affecting mainly windward and mountain

The high to our north will prevail through early next week and will
maintain moderate to locally breezy trade winds to the islands.
Furthermore, forecast models indicate airmass in the island
vicinity will stay somewhat stable and drier. Therefore, typical
trade wind weather is expected to continue through the weekend into
early next week.

Latest forecast models still show the possibility of a pair of
tropical cyclones moving westward across the central Pacific later
next week. It is still too early to tell what, if any, impacts
these will have on the islands. The National Hurricane Center in
Miami is tracking these systems now, and the first of these
systems could cross 140W into the Central Pacific Hurricane
Center's area of responsibility as early as Sunday.


High pressure far northeast of the state will support moderate to
locally fresh trade winds. An area of enhance moisture will
continue to move through windward Big Island tonight, introducing
prolonged periods of MVFR conditions. AIRMET SIERRA is posted
along the north through east sections of the Big Island. Some
showers may spread towards eastern Maui. Elsewhere, expect
predominately VFR conditions with only brief MVFR conditions in
passing showers.


A Small Craft Advisory continues for the coastal waters around Maui
and the Big Island through Friday afternoon, due to locally breezy
trade winds. As the moderate winds are expected to persist, this
advisory may need to be extended and adjusted through the weekend.

Surf along eastern facing shores is expected to edge up slightly
through the weekend as the short period trade wind swell increases
under the stronger winds. Otherwise, no significant surf is expected
through early next week. By the middle of next week, long period
easterly swell generated by potential tropical cyclone activity east
of Hawaii may begin to affect the state.


Small Craft Advisory until 6 PM HST Friday for Maalaea Bay-
Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big
Island Southeast Waters.




Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office