Hawaiian Islands Weather Details & Aloha Paragraphs / June 3-4, 2017

Air Temperatures – The following high temperatures (F) were recorded across the state of Hawaii Saturday…along with the low temperatures Saturday:

84 – 76  Lihue, Kauai
86 – 73  Honolulu, Oahu
85 – 74  Molokai
86 – 72  Kahului AP, Maui
84 – 73  Kailua Kona
81 – 67  Hilo AP, Hawaii

Here are the latest 24-hour precipitation totals (inches) for each of the islands as of Saturday evening:

0.90  Kilohana, Kauai
0.98  Manoa Lyon Arboretum, Oahu
0.21  Molokai
0.00  Lanai
0.01  Kahoolawe
1.31  West Wailuaiki, Maui
0.50  Saddle Quarry, Big Island

The following numbers represent the strongest wind gusts (mph) as of Saturday evening:

30  Port Allen, Kauai
35  Oahu Forest NWR, Oahu
33  Molokai
38  Lanai
35  Kahoolawe
36  Maalaea Bay, Maui
38  Puu Mali, Big Island

Hawaii’s Mountains – Here’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (nearly 13,800 feet high) on the Big Island of Hawaii. This webcam is available during the daylight hours here in the islands, and at night whenever there’s a big moon shining down. Also, at night you will be able to see the stars — and the sunrise and sunset too — depending upon weather conditions.

Aloha Paragraphs

Low pressure systems with their cold fronts…remain well north

Thunderstorms far south in the deeper tropics

Clear with cloudy areas…Cirrus moving over the islands locally

Showers locally – Looping radar image

Small Craft Advisory…windiest coasts and channels Maui County and the Big Island

~~~ Hawaii Weather Narrative ~~~

Broad Brush Overview:  Gusty trade winds are expected to continue through Sunday as high pressure passes north of the state. The trades will ease to moderate levels into the new week, as high pressure weakens to the north, and the remnants of an old frontal boundary sinks southward towards the island chain by the late in the week. Clouds and showers will favor windward areas through the next week, with occasional showers spilling over into leeward areas.

Details:  Weather maps show a large, moderately strong high pressure system well north-northeast of the state, with an associated ridge extending southwest from its center into the western Pacific. This high pressure cell will support the gusty trade wind flow across the islands. Wind gusts reaching as high as 30-40 mph will continue, although many areas less exposed to the trades…will find lighter winds. In addition to the gusty trades, showery conditions over the windward coasts and slopes…will continue at times. Finally, high cirrus clouds will edge over the state locally tonight into Sunday.

Looking Further Ahead:  The models indicate a weakness within the high pressure ridge developing north of the state Monday through Wednesday, as a cold front passes north of the region. Trade winds will weaken slightly over the area through this time. A band of moisture, located along the tail-end of this dissipating frontal boundary, may shift southward and possibly over the smaller islands through the second half of the week. High pressure will build north of the state Thursday through Friday…likely strengthening the trades into next weekend.

Here’s a wind profile of the Pacific Ocean – Closer view of the islands / Here’s the vog forecast animation / Here’s the latest weather map

Marine environment details: High pressure passing by far north of the islands will support strong to near gale force winds through tonight, before easing slightly Sunday and Monday…as the high moves east at 25 knots. The easing winds will likely allow the current Small Craft Advisories to be trimmed back to fewer areas later Sunday into Monday. As a new high builds far northwest of the islands early in the new week, moderate to strong trade winds are expected, although will turn slightly to the northeast (especially near Kauai), as the high will remain centered northwest of the islands. As the high tracks eastward later in the new week, the models continue to suggest that a weakening frontal boundary will move south toward the area, potentially bringing increased showers to the northern portion of the Hawaiian Offshore waters by mid-week.

The strong trade winds will bring increased rough surf to the windward sides, which is likely to be the largest surf over the next week. Small south swell energy will occasionally supply small to moderate surf to the leeward shores. There’s also the potential for a very small out of season northwest swell by Thursday, although surf is expected to remain below advisory levels along all shores through the next week.

  
Trade winds locally strong and gusty…rough surf windward

>>> Southern California Weather Brief: High pressure aloft building into northern Mexico, will bring night through morning low clouds and patchy fog for coastal areas…and above normal temperatures further inland through mid-week. Low pressure aloft will likely move into the Pacific Northwest late in the week, supporting a deeper marine layer and more widespread cooling.

Coastal low clouds…extending inland locally

World-wide tropical cyclone activity

>>> Atlantic Ocean: No active tropical cyclones

>>> Caribbean: No active tropical cyclones

>>> Gulf of Mexico: No active tropical cyclones

Here’s a satellite image of the Caribbean Sea…and the Gulf of Mexico

Here’s the link to the National Hurricane Center (NHC)

>>> Eastern Pacific: No active tropical cyclones

Here’s a wide satellite image that covers the entire area between Mexico, out through the central Pacific…to the International Dateline.

Here’s the link to the National Hurricane Center (NHC)

>>> Central Pacific: No active tropical cyclones

Here’s the NOAA 2016 Hurricane Season Summary for the Central Pacific Basin

Here’s a link to the Central Pacific Hurricane Center (CPHC)

>>> Northwest Pacific Ocean: No active tropical cyclones