The latest update to this website was at 420pm Wednesday afternoon (HST)


Here are the highest temperatures Wednesday afternoon…and the lowest Wednesday morning:

78 / 70  Lihue AP, Kauai
88 / 78  Honolulu AP, Oahu
90 / 75  Molokai AP, Molokai
88 / 73  Kahului AP, Maui
87 / 78  Kona AP, Big Island
84 / 69  Hilo AP, Big Island

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

2.21  Mount Waialeale, Kauai
1.46  Manoa Lyon Arboretum, Oahu
0.66  Puu Alii, Molokai
0.02  Lanai
3.14  Puu Kukui, Maui
1.22  Honolii Stream, Big Island

The following numbers represent the strongest wind gusts (mph) as of Wednesday afternoon:

39  Port Allen, Kauai
48  Oahu Forest NWR, Oahu
42  Makapulapai, Molokai
30  Lanai 1, Lanai
35  Kahului AP, Maui
37  South Point, Big Island

Hawaii’s MountainsHere’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.

Big Blue…click twice for largest version 

 We see an area of deeper clouds northwest of the state
(click for larger version)

Variable clouds across the state

Low clouds arriving on the trade wind flow…a few higher clouds coming in from the west

Localized showers…mostly windward areas

Kauai and Oahu (Satellite)

Kauai and Oahu (Radar)

Oahu and Maui County (Satellite)

Oahu and Maui County (Radar)

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

Maui County and the Big Island (Radar)

Big Island (Radar)


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

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


~~~ Hawaii Weather Narrative ~~~


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

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

516am, it’s mostly clear early this morning here in Kula, with a low temperature of 58 degrees at my place.

210pm, a mix of low and high level clouds are sweeping across the islands, with gusty trade winds…reaching almost 50 mph in gusts on Oahu.

420pm, partly sunny, with lots of haze here on Maui.


Hawaii’s Broad Brush Weather Overview:  Gusty trade winds will develop tonight through early Friday, as as drier and more stable air settles over the state. Trade winds will slowly ease over the weekend into next week, as relatively dry conditions continue.

Hawaii’s Weather Details:  The airmass continues to slowly dry and stabilize. A few passing showers persisted in windward areas of all the islands, but rainfall amounts were small compared to the past several days. Relative humidity is generally trending lower compared to 24 hours ago, and the trade winds are getting breezy in many locations. The trade wind inversion remains somewhat elevated, but this is expected to lower over the next 1-2 days, as high pressure aloft builds in.

The main weather impact coming up over the next several days will be increasingly gusty trade winds, due to a lowering inversion and increased pressure gradient. High resolution models, show the areas normally prone to accelerated trades, such as South Point and Leeward Kohala on the Big Island, and leeward West Maui may expect strong wind gusts, with the potential for crossing wind advisory thresholds. This condition will need to be closely monitored over the next day or two.

Trade winds look to ease to breezy levels this weekend and hold, along with relatively dry conditions through early next week.

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 / Vog map animation

Fire weather:  Gusty trade winds expected through Friday, and could present some fire weather concerns in the normally windier trade wind areas and downslope leeward locations, such as West Maui and leeward Kohala on the Big Island. The strongest wind gusts are more likely Friday as the inversion strengthens.

Trade winds will gradually ease this weekend into early next week, but dry leeward conditions will likely persist. The humidity levels will generally trend downward over the next few days, especially in the leeward areas, adding to the fire weather concerns in those areas with gusty winds.

Hawaii’s Marine Environment:  Satellite passes show Small Craft Advisory (SCA) level winds in the typical windier waters near Maui County and the Big Island, and winds getting closer to SCA in other coastal waters. The SCA remains in effect for those waters near Maui County and the Big Island, and the remaining coastal waters will be under the SCA starting at 6am. The SCA for all these waters continues through Thursday, but will likely be extended, with the expectation that winds will remain elevated into the weekend.

The high to the north of the islands that is driving these strong trade winds is expected to weaken by the weekend, causing trades to decrease to fresh to locally strong speeds. This will likely result in the SCA being scaled back to the more typical windier areas at some point at the end of the week.

The strong trade winds will generate higher surf along east facing shores through Friday. Rough and choppy surf should peak above the summer average Friday into Saturday, then gradually ease early next week. Local wind swell may wrap into select north and south facing shores. A background south swell will continue to decline into the middle of the week. Otherwise, no significant swells are expected this week.


Hawaii surfers people having fun surfing on Waikiki beach, Honolulu, Oahu island, Hawaii. - Travel Off Path



World-wide Tropical Cyclone Activity



Atlantic Ocean:  There are no active tropical cyclone

Caribbean Sea:  There are no active tropical cyclones

Gulf of Mexico:  There are no active tropical cyclones

Northeastern Pacific:  

Tropical Cyclone Bud…is located about 435 miles south-southwest of the southern tip of Baja CA

cone graphic


Bud is moving toward the west-northwest near 15 mph. A turn toward the west is expected tonight and Thursday, followed by a slower southwestward motion on Friday and Friday night. Maximum sustained winds are near 40 mph with higher gusts.

Little change in strength is forecast through Thursday, with weakening expected to begin by Thursday night. Bud is forecast to dissipate by the weekend. Tropical-storm-force winds extend outward up to 35 miles from the center.

>>> Western East Pacific:

A tropical wave located more than one thousand miles southwest of the southern tip of the Baja California Peninsula is associated with some disorganized shower and thunderstorm activity. Development of this system appears unlikely over the next several days while it moves westward to west-northwestward at 10 to 15 mph across the western portion of the basin.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…10 percent

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

North Central Pacific:  There are no active tropical cyclone

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

Northwest Pacific Ocean: 

Tropical Cyclone 04W (Prapiroon)…is located about 100 NM east-northeast of Hanoi, Vietnam – Final Warning

Tropical Cyclone 05W (Gaemi)…is located about 71 NM west of Taipei, Taiwan

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:  NASA-Funded Studies Explain How Climate Is Changing Earth’s Rotation

Researchers used more than 120 years of data to decipher how melting ice, dwindling groundwater, and rising seas are nudging the planet’s spin axis and lengthening days.

Days on Earth are growing slightly longer, and that change is accelerating. The reason is connected to the same mechanisms that also have caused the planet’s axis to meander by about 30 feet in the past 120 years. The findings come from two recent NASA-funded studies focused on how the climate-related redistribution of ice and water has affected Earth’s rotation.

This redistribution occurs when ice sheets and glaciers melt more than they grow from snowfall and when aquifers lose more groundwater than precipitation replenishes. These resulting shifts in mass cause the planet to wobble as it spins and its axis to shift location — a phenomenon called polar motion. They also cause Earth’s rotation to slow, measured by the lengthening of the day. Both have been recorded since 1900.

Read more at NASA