Marine Weather and Tide Forecast for Maunaloa, HI

DISCUSSION
Currently, satellite imagery shows some low clouds moving in on the trades bringing in some showers to windward and mauka locations which can be seen on radar. Bottom line is we are under a fairly typical trade wind pattern through the forecast period.

A high pressure far to the northeast of the islands is moving slowly east northeast. That will continue to produce moderate to locally breezy trades across the state through mid-week. Windward and mauka showers can be expected overnight and early morning each day. Some spillover to leeward areas is possible but coverage is expected to be isolated in nature. Trades may ease up slightly by the latter half of the week as a few fronts move north of the islands. Another disturbance should impact the islands over the weekend and could increase showers.

AVIATION
Bands of clouds riding in on the trade winds will bring periods of windward and mountain showers with brief MVFR conditions, favoring the overnight to early morning hours. These periods of showers will continue through at least Tuesday.

AIRMET Tango remains in effect for moderate low level turbulence immediately S through W of island mountains.

MARINE
Fresh to locally strong trade winds will persist through much of the week as as an area of high pressure remains far northeast of the state. A Small Craft Advisory (SCA) remains in effect for most Hawaiian waters as a result, through late this afternoon.
However, the high is expected to slowly drift the east, which will allow the trades to weaken slightly tonight through mid-week.
Therefore, the SCA has been scaled back this evening through Tuesday evening to the more typical windy waters near Maui and the Big Island. This SCA will likely be extended through mid to late week.

The current moderate period south-southwest swell will bring elevated surf to south facing shores today, then slowly decline through mid-week. By the end of the week, only small background south swell will exist.

Surf along east-facing shores will be rough and choppy today due to the stronger trade winds. Rough and choppy surf will persist throughout the week with a slight decrease in surf heights as the trades ease slightly tonight through mid-week.

A series of small northwest swells will keep small surf in place along north facing shores through next weekend.

HFO WATCHES/WARNINGS/ADVISORIES
Small Craft Advisory until 6 PM HST this evening for Kauai Northwest Waters-Kauai Leeward Waters-Kauai Channel-Oahu Windward Waters-Oahu Leeward Waters-Kaiwi Channel-Maui County Windward Waters-Maui County Leeward Waters.

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