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

81 – 71  Lihue, Kauai
85 – 70  Honolulu, Oahu
84 – 69  Molokai AP
87 – 70  Kahului AP, Maui
83 – 71  Kona AP, Hawaii
80 – 65  Hilo, Hawaii

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

0.01  Mohihi Crossing, Kauai
0.02  Hawaii Kai GC, Oahu
0.00  Molokai
0.00  Lanai
0.00  Kahoolawe
0.00  Maui
0.74  Kaloko-Honokohau, Big Island

The following numbers represent the strongest wind gusts (mph) Thursday evening:

24  Port Allen, Kauai
20  Oahu Forest NWR, Oahu
22  Molokai
23  Lanai
31  Kahoolawe
30  Kapalua, Maui
24  Kealakomo, Big Island

Hawaii’s MountainsHere’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. Here’s the webcam for the 10,000+ feet high Haleakala Crater on Maui. 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.
Deep clouds remain well offshore

(click on the images to enlarge them)
High cirrus clouds are present to the north and southeast
Low clouds over some parts of the state…clear areas locally too
A few showers falling locally – Looping image


  There are no watches, warnings, or advisories at this time


Hawaii Weather Narrative



Broad Brush Overview: A surface high just north of the islands will drift eastward, producing trade winds in a stable environment. A cold front approaching from the northwest, will break down the ridge north of the islands, leading to light and variable winds Friday through Sunday. This weakening cold front will move into Kauai Sunday night and stall. Showers will spread across the state with possible thunderstorms next week…as an upper level low drifts into the area.

Details: A moderately strong high north of the state will continue to shift eastward. A strong upper level ridge over the state will keep the atmosphere stable, with limited showers into the weekend. Moderate trade winds will continue over the islands with isolated showers possible along windward slopes. Trade winds will diminish tonight, as an approaching cold front from the northwest will break down the surface ridge north of the state.

Winds will become light and variable Friday through Sunday, with land and sea breezes over the islands. Onshore sea breezes and heating over land, will cause clouds to build up over the upcountry areas with a few showers possible. Offshore land breezes will clear out most cloud cover each night. A weak cold front will drift into Kauai late Sunday night bringing in additional clouds and showers to that island.

Looking Further Ahead:  This front will stall over Kauai Monday, with showers possibly spreading across all islands as an upper level low forms north of the state Tuesday through next Thursday. Heavy rainfall and thunderstorms are possible with next weeks wet weather pattern. However, there are still some uncertainties in where the upper low will set up. Any heavy rain impacts that develop under the low, will be highly dependent on the track of this system.

The models continue to show differences in the location of this upper low next Wednesday and Thursday. The latest American (GFS) model brings the upper low over the central islands, while the European (ECMWF) model keeps the center of the low just east of the Big Island. Stay tuned for changes in the island weather forecast for next week. Heavy rain and thunderstorm impacts will be sorted out by the models with time.

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 Conditions: A surface ridge north of Kauai will maintain moderate to locally strong trade winds. The trades will likely begin to ease tonight, as the surface ridge starts to weaken and shift south toward the islands ahead of an advancing cold front. By Friday, the weak ridge is forecast to be in the vicinity of the state, which will result in weak east to southeast winds Friday, and light and variable winds across most areas Saturday.

A new surface high building northwest of the area Saturday night through Sunday will eventually push the frontal boundary down toward Kauai. The forecast models are suggesting this front may dissipate as it reaches the state. Regardless of the status of the front, the high building northwest of the area will cause increasing northeast to east trade winds late Saturday night through Sunday. The trade winds will likely continue to gradually increase early next week.

The current northwest swell will continue to gradually lower. A reinforcing northwest swell spreading down across the state tonight will boost surf heights along most north and west facing shores of the smaller islands. A new north-northwest swell arriving Friday may cause surf to approach the High Surf Advisory criteria along most north and west facing shores of the smaller islands starting late Friday. This swell will gradually lower Saturday ahead of a new reinforcing northwest swell arriving late Saturday night. This swell will likely boost surf heights along most north and west facing shores of the smaller islands Sunday. The northwest swell is forecast to gradually lower early next week.

Surf along south facing shores across the state will likely remain small through early next week, with only small swell sources arriving from the southern hemisphere.

Surf along east facing shores is expected to remain minimal into early next week due to relatively light trades and the lack of a significant upstream fetch in the trade wind flow. The latest guidance suggests there may be a slight boost in surf heights along east facing shores starting next Tuesday or Wednesday.


World-wide Tropical Cyclone Activity


Here’s the latest Pacific Disaster Center (PDC) Weather Wall Presentation covering the western Pacific Ocean, the Indian Ocean, and the Arabian Sea…including Tropical Cyclone 23S

>>> Atlantic Ocean: The 2019 hurricane season begins June 1, 2019

Here’s a satellite image of the Atlantic

>>> Gulf of Mexico: The 2019 hurricane season begins June 1, 2019

>>> Caribbean Sea: The 2019 hurricane season begins June 1, 2019

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

>>> Eastern Pacific: The 2019 hurricane season begins May 15, 2019

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

>>> Central Pacific: The 2019 hurricane season begins June 1, 2019

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


>>> Northwest Pacific Ocean: There are no active tropical cyclones

>>> South Pacific Ocean: There are no active tropical cyclones

>>> North and South Indian Oceans / Arabian Sea: 

Tropical Cyclone 23S

JTWC textual advisory
JTWC graphical track map


Interesting: You’re Probably Using Your Sun-Blocking Moisturizer Wrong – SPF facial moisturizers can block the sun’s dangerous ultraviolet rays as effectively as comparable sunscreens, but only if you use them correctly. And according to a new paper published April 3 in the journal PLOS One, you probably don’t.

Sun-blocking moisturizers are popular beauty products, often marketed as “anti-aging” products. (Protecting skin from UV rays with any sunscreen will keep it looking younger as well as help protect it from cancer. But the researchers behind the new paper found that people are significantly less careful about achieving full coverage using moisturizers than they are with sunscreen, exposing vulnerable patches of skin to UV rays.

The new findings are based on an experiment conducted on 84 college students at the University of Liverpool in the United Kingdom.

Researchers gave each student either sunscreen or SPF moisturizer, with the instructions to simply apply the product to their face. After applying, the students filled out a questionnaire in which they were asked whether they had applied the substance to “all areas” of their faces. On a later date, the researchers repeated the experiment, giving the sunscreen students moisturizer and the moisturizer students sunscreen.

In both cases, an overwhelming majority of the subjects believed that they had successfully covered their entire faces.

But photos told a different story. Using a UV camera under UV lamps, the researchers imaged the students’ faces. These photos showed where exactly the sunscreen or moisturized was applied. When using sunscreen, the students missed an average of 11.1 percent of their faces, the researchers found. But using moisturizer, the students missed an average 16.6 percent of their faces.

The main problem? Folks were skipping their eyelids.The students were prone to pass over that sensitive skin area when using either product, but they skipped it most often when using moisturizer.

Interestingly, darker-skinned students tended to do dramatically better than lighter-skinned students at covering their eyelids in both cases. And men did significantly better than women.

No group was exactly good at covering their eyelids, though, and subjects tended to miss other parts of their faces as well.

Based on these results, the researchers suggested, it’s probably a better idea to use sunscreens than SPF moisturizers.

But in either case, it’s definitely a good idea to make sure you cover your whole face, including your eyelids.