The latest update to this website was 906pm Monday evening (HST)

 

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

80 – 72  Lihue AP, Kauai
83 – 72  Honolulu AP, Oahu
81 – 70  Molokai AP, Molokai
80 – 68  Kahului AP, Maui 
83 – 71  Kona AP, Hawaii
77 – 66  Hilo AP, Hawaii 

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

2.56  Mount Waialeale, Kauai
1.08  Manoa Lyon Arboretum, Oahu
0.38  Puu Alii, Molokai
0.00  Lanai City, Lanai
2.11  West Wailuaiki, Maui
0.78  Honolii Stream, Big Island

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

27  Lihue, Kauai
35  Oahu Forest NWR, Oahu
27  Molokai AP, Molokai
28  Lanai 1, Lanai
28  Maalaea Bay, Maui
23  Waikoloa, Big Island

Hawaii’s Mountains – Here’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii. These webcams are 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.

 

https://weather.gc.ca/data/satellite/goes_gwdisk11_1070_100.jpg

Big Blue…click twice for largest version

 

https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/tpw/13/GOES17-TPW-13-900x540.gif 

An upper level low will drift across the islands today
(click for larger version)

 


https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/GEOCOLOR/GOES17-HI-GEOCOLOR-600x600.gif

 High level clouds are mostly moving by to the south of the state

 

https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/13/GOES17-HI-13-600x600.gif

Low clouds carried our way on the trade winds

 

https://radar.weather.gov/ridge/standard/HAWAII_loop.gif

Showers locally

 

https://www.weather.gov/images/hfo/satellite/Kauai_VIS_loop.gif

Kauai and Oahu (Satellite)

 

https://radar.weather.gov/ridge/standard/PHKI_loop.gif

Kauai and Oahu (Radar)

 

https://www.weather.gov/images/hfo/satellite/Oahu-Maui_VIS_loop.gif

Oahu and Maui County (Satellite)

 

https://radar.weather.gov/ridge/standard/PHMO_loop.gif

Oahu and Maui County (Radar)

 

https://www.weather.gov/images/hfo/satellite/Hawaii_VIS_loop.gif

 Maui, Kahoolawe, Lanai, and the Big Island (Satellite)

 

https://radar.weather.gov/ridge/standard/PHKM_loop.gif

Maui County and the Big Island (Radar)

 

https://radar.weather.gov/ridge/standard/PHWA_loop.gif

Big Island (Radar)

 

Model showing precipitation through 8-days (you can slow this animation down)

 

https://www.weather.gov/wwamap/png/hfo.png 

Please open this link to see details on any current Watches, Warnings and Advisories noted above

 

 

https://www.weather.gov/images/hfo/graphics/pmsl.gif

 

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Monday comments: I’m home here in upper Kula, Maui, Hawaii

Good day everyone, I hope you have a great Monday wherever you happen to be spending it.

533am, it’s a clear this morning here in Kula, although with clouds along the windward side, with a low temperature of 50 degrees at my place.

836am, it’s a totally clear sunny morning here along the leeward slopes of the Haleakala Crater! As usual, with the trade winds blowing, there are low clouds arriving along the windward coasts and slopes. The strongest wind gust around the state was up in the Koolau Mountains on Oahu…topping out at 40 mph at the time of this writing.

1238pm, clouds have increased this afternoon, although not so much down along the coastal areas. The temperature here at my place is a mild 70.1 degrees, with light winds at best.

553pm, it’s partly cloudy for the most part, with some sunny and cloudy areas here in Maui County. My high temperature here in upper Kula today was a rather warm 76.5 degrees, although has dropped to 68.9 at the time of this writing.

908pm, it’s still cloudy at the moment, with the temperature here at my Kula Weather Tower dipping to 62.4 thus far into the evening.

 

Hawaii’s Broad Brush Weather Overview:  Easterly trade winds will decrease to light to moderate levels through this week. A couple of upper-level disturbances and areas of enhanced low-level moisture, will keep wetter than normal conditions in the forecast for the majority of this week…into the weekend.

Hawaii’s Weather Details:Current radar imagery shows scattered showers riding into the windward and mountain slopes of all islands, with the occasional stronger shower spilling over into the leeward areas. Satellite imagery continues to show a weakening upper-level low slowly drifting from west to east across the island chain.

Despite the instability associated with this feature, we have not yet seen any thunder over interior Big Island, though a slight chance remains, as the low tracks eastward across the state. Strong winds aloft have prompted the issuance of a Wind Advisory for the Big Island Summits, in effect through early Tuesday morning.

At the surface, a high far north-northeast of the island chain will continue to weaken and move off to the east. Trade wind speeds will trend down over the next few days as a result, becoming light to moderate through the second half of the week, with some sea/land breezes developing over terrain-sheltered leeward areas.

Wetter than normal conditions remain in the forecast for all islands through the majority of this week. While Tuesday will trend a bit drier, wetter weather will return for Wednesday into the weekend, as a couple of disturbances enter the area. Wednesday night and Thursday, the remnants of an old East Pacific cold front drift into the islands on the trade winds, providing a boost in low-level moisture.

While the longer-term forecast is often associated with global model uncertainty, the GFS and ECMWF models are in decent agreement about an upper-level trough of low pressure diving down over the state of Hawaii Thursday night through Saturday, along with a surface trough reflection.

The models still differ on the details, but this would keep enhanced showers in the forecast into the weekend, with the potential for some heavy downpours and slight chance of thunderstorms. Will continue to see how this scenario evolves over the next couple of days with the forecast adjusted as needed.

 

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Here’s the latest Weather Map

Marine Environmental Details:  A high pressure system north of the state has shifted east, easing the fresh to strong breezes over some waters. Thus, the Small Craft Advisory (SCA) for all waters has been scaled back to typically windy waters around the Big Island and Maui County. SCA conditions may drop late Tuesday into Wednesday as the high continues to track east and weaken. Expect gentle to locally fresh trades to prevail Wednesday through Friday, as a trough develops north of the state and lingers.

Pulses of south to southwest swells are due this week, with High Surf Advisory (HSA) conditions expected by Thursday. The buoy off of Lanai is still showing some inconsistent energy, although with a gradual down trend through Wednesday. Forerunners from a larger and longer lived south-southwest swell will arrive Wednesday, and surf is expected rise to the HSA level during the peak of the swell Thursday and Friday.

A pair of small northwest swells will move through over the next several days. The Hanalei buoy shows some northwest energy. Expect this swell to continue to spread down the island chain, peaking Tuesday, and declining late Tuesday and Wednesday. Wind driven waves will maintain rough east shore surf above the May average. As trade winds decline over the next few days, these seas will gradually decline to around May average by Tuesday, then drop to below average for the rest of the week.

 

Top 12 Best Beaches in Oahu - Hawaii Travel Guide

 

 

World-wide Tropical Cyclone Activity

 

Atlantic Ocean: There are no active tropical cyclones

Caribbean Sea: There are no active tropical cyclones

Gulf of Mexico:  There are no active tropical cyclones

Northeastern Pacific: There are no active tropical cyclones

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

North Central Pacific:  There are no active tropical cyclones

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

Northwest Pacific Ocean:  There are no active tropical cyclones

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean: There are no active tropical cyclones

Arabian Sea:  There are no active tropical cyclones

Here’s a link to the Joint Typhoon Warning Center (JTWC)

>>> Here’s a link to the Pacific Disaster Center’s (PDC Global) Weather Wall website

 

Interesting: Lake Tsunamis Pose Significant Threat Under Warming Climate

The names might not be familiar—Cowee Creek, Brabazon Range, Upper Pederson Lagoon—but they mark the sites of recent lake tsunamis, a phenomenon that is increasingly common in Alaska, British Columbia and other regions with mountain glaciers.

Triggered by landslides into small bodies of water, most of these tsunamis have occurred in remote locations so far, but geologist Bretwood Higman of Ground Truth Alaska said it may just be a matter of time before a tsunami swamps a more populated place like Portage Lake near Whittier, Alaska.

When he estimates where the risk of an Alaskan lake tsunami is highest, Portage Lake “is pretty much at the top of my list,” Higman said.

Other sites in Alaska where the risks of lake tsunamis coincide with human activity and infrastructure include Eklutna, Seward, Valdez, Juneau, Grewingk Lake in Kachemak Bay State Park and Index Lake near Glacier View.

Read more at Seismological Society of America

Image: The most active portion of the instability at Portage Glacier, looking down on Portage Lake and a tour boat in the distance.