The latest update to this website was at 740pm Sunday (HST)

 

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

2.18  Waiakoali, Kauai
2.11  Kuaokala, Oahu
0.04  Puu Alii, Molokai
0.02  Lanai AP
3.73  Na Kula, Maui
6.05  Kealakomo, Big Island

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

15  Lawai, Kauai – E
18  Kuaokala, Oahu – NE
08  Anapuka, Molokai – SW
12  Lanai 1, Lanai – NNE
27  Na Kula, Maui – NE
28  South Point, Big Island – NE

 

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

A deepening low pressure system north of Hawaii…is the source of inclement weather conditions for Hawaii

 

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

Considerable clouds over and around all the islands

 

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

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

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

Showers locally…some are heavy 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Sunday comments:  I’m here at home in upper Kula, Maui

It’s partly to mostly cloudy here in Maui County early this morning, with a low temperature of 55 degrees at my place, with the relative humidity 67 percent.

12pm, there’s are lots of showers falling, many of which are heavy, falling around the state, although Maui County is much less active in that regard at the time of this writing.

240pm, I’m finally seeing some rainy looking clouds approaching here in upper Kula, Maui. Obviously, there’s lots of heavy rainfall all around the state, which is noted by the yellow and red colors in the animated radar image below:

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

320pm, the first sprinkles have arrived here at my Kula weather tower, and looking down country, it looks a bit voggy.

517pm, cloudy, although most of this cloudiness is of the middle level variety. It’s trying to shower here at my place, although isn’t having an easy time of it. However, radar shows heavier rain to the southwest.

 

Weather Wit of the day: Unpredicted Storm – Elements of surprise

>>> Highest Temperature Sunday, January 4, 2026 – 84 near Hidalgo, TX
>>> Lowest Temperature Sunday, January 4, 2026 – minus 27 near Estcourt Station, ME

Interesting weather Blog: Mauka Showers…Starting the New Year with a Bang!

 

Hawaii’s Broad Brush Weather Overview: A kona low northwest of Kauai will shift southward through Tuesday. Light to breezy southeasterly winds will gradually strengthen from east to west across the state through tonight, as the low moves just west of Kauai. This will keep showers and thunderstorms over the state for the next couple of days, leading to a continued threat of flash flooding.

Winds will strengthen Monday into Tuesday. In addition, significant snow and ice accumulations are expected on the Big Island Summits over the next couple days. The low will weaken southwest of the state Tuesday through mid-week, allowing chances of thunderstorms and heavy rain to taper off. However, lingering moisture and a weak upper level trough could keep chances of rain over the state through the week.

Hawaii’s Weather Details: Radar and satellite clearly show the impact of the kona low across the area. Rainfall amounts over the last 6 hours have been significant, and a series of flood advisories have been issued, with some still in effect. As of 3pm, showers and thunderstorms were widespread, with the strongest thunderstorms off the coast south and west of Kauai County. An area of showers and thunderstorms was moving north toward the state, and is expected to move slowly across the area into the night.

This kona low will continue to bring significant weather to the state over the next few days. As of 3pm, the low was about 300 miles northwest of Kauai. It is forecast to move southwest and then back southeast, staying within a few hundred miles of the western end of the island through Tuesday. This low will bring more rain and thunderstorms, and a continued threat of flooding.

The statewide Flood Watch remains in effect through Monday afternoon, and this may need to be extended into Tuesday. Winds will also increase statewide, becoming close to wind advisory levels in some coastal areas. At this time, confidence in winds meeting criteria over a large enough area is not high enough for a wind advisory.

Strong winds and snow/ice are expected on the summits of the Big Island over the next couple of days. Snow accumulations of greater than a half of a foot and heavy ice accumulations are possible. Summit roads have been closed. The High Wind Watch for the summits has been upgraded to a High Wind Warning, and a Winter Storm Warning was previously issued. Both of these are in effect from 6am Monday to 6am Tuesday.

Moisture has been drawn northward. Even though moisture rises, the best chance for flooding is through Monday (possibly into Tuesday) due to the proximity of the kona low and its associated cold air and lift aloft. The threat decreases as the low moves away from the state late Tuesday and then weakens considerably Wednesday/Thursday. Showers will remain in the forecast through the week. Low level winds will be easterly to southeasterly through Thursday, before becoming light Friday into Saturday. This should allow for two days of sea- and land-breeze-dominated showers.

Next weekend, a band of strong westerlies aloft will move toward the state. A low far north of the area may push a cold front through late next weekend, and the deterministic models seem to be converging on this solution. But it is seven days out, so confidence is not that high.

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: A kona low, currently located north of Kauai, will slowly drop to the southwest over the next several days and bring periods of heavy rain, thunderstorms, and strengthening winds to both the offshore and coastal waters. As the low passes just west of the state Monday into Tuesday, east to east-southeast winds are forecast to increase to strong to locally gale force, then slowly weaken by mid-week. In addition, combined seas will be building across most waters this evening and remain elevated through the event. A Small Craft Advisory (SCA) has been issued for the more typical zones surrounding the Big Island and Maui windward waters, with the remaining waters going into effect this evening. A Gale Watch has been issued for Monday morning to Monday evening for near gale to gale force winds developing in the Alenuihaha Channel.

A moderate, medium-period north to north-northeast swell (360-020 deg) will decline slowly through Monday and produce moderate surges for north facing harbors, especially for Kahului and Hilo. A small, long period northwest (310-320 deg) swell will arrive late Tuesday and persist through the end of the work week.

Aside from areas exposed to wrapping north-northeast swell, surf along east facing shores will remain rather subdued. However, a fetch of strong to locally gale force winds will significantly increase easterly wind swell tonight through the first half of the week, which will likely exceed High Surf Advisory thresholds for east facing shores.

Surf along south facing shores will remain small through the forecast period.

Peak astronomical monthly tides with water levels running roughly 0.5 ft above normal is expected to produce minor coastal flooding through Monday morning. This flooding may be enhanced along north facing shores due to the current north northeast swell. A Coastal Flood Statement has been extended through Monday morning to highlight this flooding potential, especially during the daily peak high tide cycle.

 

Severe weather possible across Hawaii this week



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Caribbean Sea:  There are no active tropical cyclones

Gulf of America:  There are no active tropical cyclones

 

Northeastern Pacific:  There are no active tropical cyclones

North Central Pacific: There are no active tropical cyclones

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

 

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:

Tropical Cyclone 09S (Grant)…is located approximately 276 NM north-northeast of Port Louis, Mauritius – Final Warning

https://www.metoc.navy.mil/jtwc/products/sh0926.gif

Tropical Cyclone 12S…is located approximately 150 NM north of Port Louis, Mauritius

https://www.metoc.navy.mil/jtwc/products/sh1226.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:  What’s an atmospheric river?

What's an atmospheric river? AP explains the weather phenomenon

Atmospheric rivers are massive plumes of moisture carried across the sky that can dump heavy rains or snow over land.

Atmospheric rivers generally form in tropical regions, where warm temperatures can cause water vapor to rise into the atmosphere, according to the National Oceanic and Atmospheric Administration. The winds aloft then carry that moisture to northern and southern latitudes.

They occur globally but are especially significant on the West Coast of the United States, where they create 30% to 50% of annual precipitation and are vital to water supplies but also can cause storms that produce flooding and mudslides, according to NOAA.

Formed by winds associated with cyclones, atmospheric rivers typically range from 250 miles to 375 miles in width and move under the influence of other weather.

Read more: The Canadian Press