The latest update to this website was at 1214pm Wednesday (HST)

 

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

0.31  Wainiha, Kauai
0.20  Kaluanui, Oahu
0.78  Puu Alii, Molokai
0.12  Lanai City, Lanai
0.43  EMI Baseyard, Maui
1.64  Honokaa, 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 Wednesday afternoon:

21  Port Allen, Kauai
21  Lualualei, Oahu
28  Makapulapai, Molokai
12  Lanai 1, Lanai
38  Na Kula, Maui
30  Upolu AP, 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

 Post–Tropical Cyclone Kiko moving by and away…thunderstorms far southwest

 

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

 Post–Tropical Cyclone Kiko north of Kauai 

 

 

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

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

Showers locally 

 

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.

It’s clear to partly cloudy here in Maui County early this morning. The low temperature at my place was a relatively warm 57 degrees, especially compared to the very chill 50 degree reading just 2-days ago…with a relative humidity of 83%.

1218pm, sunny to partly sunny, with not a drop of rain in sight here in Maui County.

Weather Wit of the day:  Acid Rain – Assault of the earth

>>> Highest Temperature Tuesday, September 9, 2025 – 109 near Tolleson, Arizona
>>> Lowest Temperature Wednesday, September 10, 2025 – 30 near Davis, West Virginia

 

Hawaii’s Broad Brush Weather Overview:  As weakening Tropical Storm Kiko skims the northern windward coastal waters of Oahu and Kauai this morning, higher moisture and light southeasterlies associated with this system could potentially lead to areas of topographically-enhanced precipitation. Once Kiko exits stage left, moderate trades will return by early Thursday morning. Higher rain chances Thursday night and Friday with relatively drier weekend conditions.

Hawaii’s Weather Details: Today’s challenge focuses on where rain will fall and where more organized showers will root themselves within higher terrain later this afternoon into evening. Tropical Storm Kiko has introduced a moist air mass to the islands, especially the western half of the chain, where this morning’s Lihue sounding precipitable water 1.71 inches places. Swaths of higher moisture moving up within the banding features associated with Kiko, whose low level circulation is located approximately 80 miles north of  Oahu early this morning, will pass over the islands the next 12 to 18 hours.

The positioning of these near north-to-south orientated bands of higher moisture will ultimately determine the have and the have not’s of any significant rainfall. A weak wind field left in Kiko’s wake will slowly veer more southeast today, and this weak wind direction could cause problems across Oahu, from the Molokai plume as well as over Kauai’s higher terrain. An outer band that is currently coming across the eastern end of the state is increasing shower coverage across windward Big island and Maui during the pre-dawn hours.

So, while Kiko will have no direct impacts to the islands, the indirect impacts will come from stationary cells within this veered east-southeast flow, that could easily produce a quick inch or two of rain within a hour. Higher resolution modeling solutions are not focusing the highest precipitation on any particular area, but they are suggesting that convection could anchor along Oahu’s Koolau’s and Big Island’s windward Hilo, Puna and Kau regions. Thus, there is no statewide Flood Watch, the radar will need to be closely monitored today, in the event that isolated areas do receive a quick 2 to 4 inches, initiating downstream flooding issues.

Locally breezy trades return overnight tonight, as upper ridging builds in from the northwest. An area of higher mid-layer moisture passing by from the east Thursday afternoon and Friday will increase statewide rain chances, likely focused along more eastern island windward upslope areas. An uneventful weekend, where many locales will remain dry with only brief showers occurring along east-facing exposures and within higher terrain. Rain chances will again be on the rise next Tuesday and Wednesday, as a lobe of higher moisture expands up from the south and clips the state.

Fire weather:  Higher humidity with light east-southeast breezes now. Breezy trades are forecast to return tonight. Rain will focus within higher terrain and windward exposures the next couple of days.

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:  Tropical Storm Kiko is NE of Oahu at the time of this writing, and continues to track west-northwest just north of the coastal waters. As Kiko continues to track westward, moderate to locally fresh east to southeast trades will build from east to west across the island chain. Thursday, the high pressure ridge will build north of the waters bringing a return to moderate to locally fresh trade winds through the forecast period.

Kiko continues to produce Tropical Storm conditions across the northeast central offshore waters. A Tropical Storm Warning remains in effect for the offshore waters, however the latest forecast from NHC shows Kiko weakening to a Tropical Depression.

Nearshore buoys across the state exposed to the easterly swell from Kiko, has peaked and is dropping quickly. Therefore, the Small Craft Advisory (SCA) for seas for western waters, the High Surf Warning and Advisory for all east facing shores have been cancelled.

Surf along south facing shores will remain near the summertime average as the reinforcing swell out of the south-southwest peaks, before slowly declining through Thursday. Another small bump from the south is possible Friday. Additionally, multiple small pules of northwest to north-northwest swell energy will generate small surf along north facing beaches throughout the week and into the weekend. A short-lived northeast swell is possible for select exposures as Kiko passes to our north.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclone

Eastern and Central Tropical Atlantic:

A tropical wave is forecast to emerge offshore of west Africa in a couple of days. Environmental conditions could support some slow development of the system over the weekend into early next week as the wave moves to the west-northwest at about 15 mph over the eastern and central tropical Atlantic.

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

>>> South of Southern Mexico:

Invest 95E

Recent satellite surface wind data indicate that an area of low pressure has formed a couple of hundred miles south of Puerto Angel, Mexico. The associated shower and thunderstorm activity has become better organized since yesterday, and a tropical depression is likely to form in a day or so. The system is forecast to move west-northwestward, roughly parallel to but offshore of the coast of Mexico.

* Formation chance through 48 hours…high…70 percent
* Formation chance through 7 days…high…90 percent

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

 

North Central Pacific:  

Post-Tropical Cyclone Kiko…is located about 110 miles north of Honolulu, Hawaii – Last Advisory

KIKO BECOMES A REMNANT LOW

According to the NHC advisory number 42

The post-tropical cyclone is moving toward the west near 12 mph. A turn toward the west-northwest is expected soon, with this general motion continuing for the next couple of days. Maximum sustained winds are near 35 mph with higher gusts. Little change in strength is forecast during the next 48 hours. The estimated minimum central pressure is 1009 mb (29.80 inches).

cone graphic

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

 

Northwest Pacific Ocean: 

Southwest Pacific Ocean:  There are no active tropical cyclones

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

South Indian Ocean: 

Tropical Cyclone 03S…is located approximately 468 NM west-southwest of Diego Garcia

https://www.metoc.navy.mil/jtwc/products/sh0326.gif

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:  Human Impact on the Ocean Will Double by 2050, UCSB Scientists Warn

The seas have long sustained human life, but a new UC Santa Barbara study shows that rising climate and human pressures are pushing the oceans toward a dangerous threshold.

Vast and powerful, the oceans can seem limitless in their abundance and impervious to disturbances. For millennia, humans have supported their lives, livelihoods and lifestyles with the ocean, relying on its diverse ecosystems for food and material, but also for recreation, business, wellness and tourism.

Yet the future of our oceans is worrying, according to researchers at UCSB’s National Center for Ecological Analysis and Synthesis (NCEAS).

“Our cumulative impact on the oceans, which is already substantial, is going to double by 2050 — in just 25 years,” said marine ecologist and NCEAS director Ben Halpern, who led the effort to forecast the future state of marine environments as they bow under the combined pressures of human activities, which include ocean warming, fisheries biomass loss, sea level rise, acidification and nutrient pollution, among other impacts. “It’s sobering. And it’s unexpected, not because impacts will be increasing — that is not surprising — but because they will be increasing so much, so fast.”

Read More: University of California – Santa Barbara