The latest update to this website was at 520pm Saturday (HST)

 

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

0.60  Mount Waialeale, Kauai
0.04  Punaluu Stream, Oahu
0.00  Molokai
0.00  Lanai
0.18  West Wailuaiki, Maui
1.22  Waiaha Stream, Big Island

>>> There are lots of locations that measure rainfall and winds, here’s a map of all areas for your reference (the map is clickable to zoom in closer)

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

28  Port Allen, Kauai
30  Oahu Forest NWR, Oahu
31  Molokai AP, Molokai
31  Lanai 1, Lanai
45  Kealaloloa Rg, Maui
31  Pali 2, Big Island

Hawaii’s Mountains – Here’s a link to the live webcams on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii, and atop the Haleakala Crater (~10,023 feet) 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.

 

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

Big Blue…click twice for largest version

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

 Thunderstorms in the deeper tropics 

 

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

High clouds moving over the state from the northwest  

 

 

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

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

Showers locally…very few 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

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

It’s clear to partly cloudy here in Maui County early this morning. The low temperature at my place was 54.5 degrees…with a relative humidity of 80%.

Its’ mostly sunny late this afternoon, with quite a bit of high icy cirrus clouds…which could very well bring another great sunset!

Mauka Showers…Windward Big Island Drought

Weather Wit of the day: Vain Meteorologist – A person who says, “Thank you,” when you say, “Good morning.”

>>> Highest Temperature Saturday, September 13, 2025 – 106 at Death Valley, CA
>>> Lowest Temperature Saturday, September 13, 2025 – 21 near Mackay, Idaho

 

Hawaii’s Broad Brush Weather Overview: High pressure centered northeast of Hawaii will drive moderate to fresh trade winds with dry and stable weather into next week. An upper trough will drift through the islands from Tuesday to Thursday possibly increasing showers.

Hawaii’s Weather Details: High pressure centered northeast of Hawaii will generate moderate to fresh trade winds with dry and stable weather into next week. Visible satellite shows cloud build ups over lower slopes on the Big Island, and a few cirrus clouds passing over the state. Otherwise conditions are mostly sunny to partly cloudy with virtually no precipitation observed on radar. The overall pattern will change little through Monday, with the best chance for rainfall and cloud cover over the windward slopes, but accumulations will be light.

A tropical trough will pass south of the state Tuesday through Thursday. Upper level troughing will set up over the state around the same time, which may act to enhance showers moving in on both the trade wind flow and the far northern periphery of the trough. Clouds and showers will likely increase during this time frame focusing over windward and mountain areas. The upper trough may become an upper low and deepen next weekend possibly further enhancing rainfall.

Fire weather:  Humidity levels will remain dry into next week, with increasing humidity and shower trends Tuesday into Wednesday, as a weak low level trough drifts from east to west across the island chain. Wind speeds will likely remain below critical fire weather thresholds for the next 7-days. Temperature inversion heights near the Big Island and Maui today will range from 5,500 to 6,500 feet.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Vog map animation / 8-Day Precipitation model

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

 

Hawaii’s Marine Environment:  Weak surface high pressure will remain anchored north of the islands the next several days. This will support moderate to locally strong trade winds across the nearshore waters. A Small Craft Advisory (SCA) remains in effect for the typically windy bays and channels surrounding Maui County and Big Island through Sunday afternoon. Winds may briefly fall below SCA criteria Sunday morning, but are expected to restrengthen by the afternoon hours. Moderate trades will prevail through the middle of next week before once again picking back up to SCA levels across the typically windy areas Thursday and Friday.

The recent small, medium period north swell is currently on the decline but should still have enough energy to keep north-facing shore surf up to near head high heights. This swell will significantly fall off Sunday and produce waist high surf by late Sunday afternoon. Another medium period north swell arrival next Thursday may cause a slight bump in late week surf along north-facing shores.

Surf along south-facing shores will remain near or slightly above late summer norms the next couple of days. This elevated south surf will fall through the day as the small, medium period south swell drops off. A small long period reinforcement arriving tonight will hold south shore surf to around waist high Sunday.

Typical short period wind wave surf will occur along east-facing shores under moderate trades this weekend.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclone

Eastern and Central Tropical Atlantic:

A tropical wave located near the Cabo Verde Islands is producing limited shower and thunderstorm activity over the far eastern Atlantic. Dry and stable air will likely limit this system’s development over the next few days, but a tropical depression could form by the middle to latter part of next week while moving west-northwestward to northwestward at 10 to 15 mph over the central tropical Atlantic.

* Formation chance through 48 hours…low…near 0 percent.
* Formation chance through 7 days…medium…60 percent

 

Caribbean Sea:  There are no active tropical cyclone

Tropical cyclone formation is not expected during the next 7-days.

Gulf of America:  There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7-days.

 

Northeastern Pacific:  There are no active tropical cyclones

1. Off the coast of Southwestern Mexico:

An area of low pressure could develop well offshore of the coast of southern or southwestern Mexico early next week. Environmental conditions are expected to be conducive for gradual development as the low tracks westward to west-northwestward around 10 to 15 mph.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…20 percent

2. South of Baja California Peninsula:

An area of low pressure located south of the Baja California Peninsula, which includes the remnants of Mario, is producing a broad area of disorganized showers and thunderstorms. Environmental conditions are expected to be conducive for gradual development, and a tropical depression could form by the middle of next week as it tracks slowly westward.

* Formation chance through 48 hours…low…near 0 percent.
* Formation chance through 7 days…medium…40 percent

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

 

North Central Pacific: There are no active tropical cyclones

South and Southeast of the Hawaiian Islands:

An area of low pressure well southeast of the Hawaiian Islands is producing a large area of disorganized showers and thunderstorms. Environmental conditions appear conducive for some gradual development of this system as it moves westward or west-northwestward at around 10 mph.

* Formation chance through 48 hours…low…near 0 percent.
* Formation chance through 7 days…low…20 percent

Tropical cyclone formation is not expected during the next 7 days.

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

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:  Lightning to Spark More Wildfires in Western Us in Coming Decades

New study finds increasing hot weather and lightning could spark more fires.

Lightning will ignite more wildfires in the western United States in the coming decades as temperatures increase due to climate change, according to a new study that combined predictions for fire-friendly and lightning-friendly weather conditions.

In the western United States, lightning is responsible for more than two-thirds of the area burned by wildfires, and that number is only going to grow. Starting as early as 2031-2060, the study found essentially all of the western United States, or 98%, will see an increase in days posing a risk for lightning– started wildfires.

Areas that are already at high risk for wildfires started by lightning, such as Oregon, Idaho and Montana, are expected to see the largest increase in overall lightning days, with up to 12 more days per summer by 2060. Some areas, particularly in the U.S. Southwest, like Arizona, are expected to see a smaller increase as they will simply see less lightning.

Read More: American Geophysical Union

Image: The Howe Ridge Fire seen from across Lake McDonald roughly 24 hours after the fire was started by a lightning strike. New study finds wildfires started by lightning will increase across 98% of western United States.