Hawaiian Islands Weather Details & Aloha Paragraphs / October 16-17, 2017

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

84 – 75  Lihue, Kauai
87 – 75  Honolulu, Oahu
83 – 74  Molokai
87 – 73  Kahului AP, Maui
87 – 76  Kailua Kona
83 – 69  Hilo AP, Hawaii

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

1.16  Mount Waialeale, Kauai
0.39  Moanalua RG, Oahu
0.28  Molokai
0.00  Lanai
0.00  Kahoolawe
1.33  Puu Kukui, Maui
1.38  Kealakekua, Big Island

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

33  Lihue, Kauai
46  Oahu Forest NWR, Oahu
32  Molokai
33  Lanai
45  Kahoolawe
38  Maalaea Bay, Maui
50  Kawaihae, 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

Strong and gusty trade winds blowing across the islands

Thunderstorms active over the offshore waters

 
Clear to partly cloudy…high cirrus near the Big Island

Showers locally…mostly windward – Looping image

Small Craft Advisory…all coasts and channels statewide

High Surf Advisory…east shores / south shores

Gale Warning…Alenuihaha and Pailolo Channels through Thursday morning

Wind Advisory…parts of Lanai, Kahoolawe, and north and east parts of the Big Island/ 20-50 mph

~~~ Hawaii Weather Narrative ~~~

Broad Brush Overview:  A moderately strong high pressure system north of the islands, will keep blustery trade winds active through much of the week. These strong and gusty winds will diminish slightly by Friday, and then even more so during the weekend. Clouds and showers will favor windward and mountain areas, although showers will reach leeward areas at times…due to the strength of the trades.

Details: High pressure north of the state will settle southwestward over the next couple of days, with a new high pressure cell building north of the islands during the middle of the week. This high will shift eastward and weaken by Friday into the weekend…as an early season cold front approaches from the northwest. It’s still too early to know if this front will reach the islands, and potentially bring showers our way.

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: The windy conditions are being caused by a strong high pressure system north of the Hawaiian Islands. This high will be replaced by another high Wednesday night, with the windy conditions continuing through Thursday. The trades should begin to diminish Friday…as the high weakens thereafter.

The waters around the islands are very rough, choppy, and dangerous, caused by the strong to gale force trade winds. Surf is also elevated along the east facing shores of all islands.

The current late season south swell will peak today. The next south swell will be smaller…arriving by the weekend.

The current north-northwest swell has peaked, and is on its way down. The next swell from the same direction should arrive early Friday. Look for moderate surf, followed by a northwest swell Monday of next week…approaching high surf advisory levels for the north and west facing shores.

World-wide Tropical Cyclone activity

>>> Here’s the latest PDC Weather Wall Presentation, covering strengthening TS Lan…and two tropical disturbances in the northeastern Pacific Ocean

>>> Here’s the latest PDC Weather Wall Presentation, covering a tropical disturbance being referred to as Invest 92L in the southwest Atlantic Ocean

>>> Atlantic Ocean: No active tropical cyclones

>>> Caribbean Sea: 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 a link to the Central Pacific Hurricane Center (CPHC)

>>> Northwest Pacific Ocean

Tropical Cyclone 25W (Lan) remains active, here’s a graphical track map, and a satellite image…and what the computer models are showing