Drought in Hawaii, June 1 to 30, 2019

Area Forecast Discussion
National Weather Service Honolulu HI
830 PM HST Fri May 31 2019

.SYNOPSIS...
High pressure far northeast of the islands will maintain trade winds
to the area into next week. Cloud and showers will favor windward
and mountain areas. Fairly dry weather will persist over leeward
areas.

&&

.DISCUSSION...
Trade wind weather prevails across the state this evening, with
passing low clouds and showers affecting mainly windward areas.
Lingering convection is still covering much of Big Island at this
time, providing some showers, though clearing is expected overnight
on the lee areas. Not much low clouds are present in the island
vicinity, though there are areas of low clouds entering the eastern
coastal waters and will reach the islands late tonight into early
Saturday. There are also some thin high clouds passing over the
islands at times. In all, expect mainly fair weather to continue
over much of the lee areas through rest of the evening into early
Saturday morning, while windward areas will see an increase in
clouds and showers as the night progresses.

Area of surface high pressure will persist far northeast of the
region through the rest of the weekend into early next week.
providing moderate to locally breezy trade winds. Forecast solutions
indicated near seasonal moisture in the island vicinity for the next
few days. Hence, seasonal trade wind weather will prevail into early
next week. Models do indicate an upper level trough may pass over
the area by the middle of next week. If so, passing showers may be
enhanced with the possible increase in atmospheric instability.

&&

.AVIATION...
Light to relatively moderate winds overnight into the day on
Saturday as we continue to see the easterly trade wind pattern.
Expect passing MVFR conditions on the windward slopes, especially
for the Big Island again. The ceiling may get low enough and
consistent enough to warrant an AIRMET for mountain obscuration on
the Big Island and will issue an AIRMET if necessary. This pattern
is expected for at least the next few days.

&&

.MARINE...
Persistent high pressure far NE of the area will support moderate to
locally strong trade winds through the middle of next week. A Small
Craft Advisory remains posted for the windier zones around Maui and
the Big Island through Sunday, and will likely need to be extended
in time. A low and associated front passing N of the islands may
lead to weaker trade winds Thursday and Friday.

A series of small S swells will maintain small surf along S facing
shores into next week, with the potential for slightly larger surf
by next weekend. A long-running small NW swell will diminish through
this weekend. Otherwise, a short period trade wind swell will
support moderate surf along E facing shores into next week.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 PM HST Sunday for Maalaea Bay-Pailolo
Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island
Southeast Waters.

&&

DISCUSSION...Hui
AVIATION...Chevalier
MARINE...Birchard