The latest update to this website was at 1207pm Sunday (HST)

 

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

2.28  Anahola, Kauai
5.90  St. Stephens, Oahu 
1.71  Honolimaloo, Molokai
0.88  Lanai 1, Lanai
4.47  Hana AP, Maui
2.09  Pahoa, Big Island

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

10  Port Allen, Kauai – NE
12  Kuaokala, Oahu – NW
08  Puu Alii, Molokai – SSW
04  Lanai 1,  Lanai – SW
13  Kula 1, Maui – SE
25  Mauna Loa Obs, 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

 A low pressure tr0ugh is bringing inclement weather 

 

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

Variably cloudy with thunderstorms 

 

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…many are heavy  

 

https://www.weather.gov/wwamap/png/hfo.png

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

 
High Wind Warning until 6pm this evening for Big Island Summits. 

Flood Watch this afternoon through tonight for Niihau-Kauai
Southwest-Kauai Mountains-Waianae Coast-Oahu North
Shore-Olomana-Central Oahu-Waianae Mountains-Lanai Mauka-
Kahoolawe-Maui Windward West-Maui Leeward West-Haleakala Summit-
Kauai North-Kauai East-Kauai South-East Honolulu-Honolulu Metro-
Ewa Plain-Koolau Windward-Koolau Leeward-Molokai Windward-Molokai
Southeast-Molokai North-Molokai West-Molokai Leeward South-Lanai
Windward-Lanai Leeward-Lanai South-Maui Central Valley North-Maui
Central Valley South-Windward Haleakala-Kipahulu-South
Maui/Upcountry-South Haleakala-

~~~ Hawaii Weather Narrative ~~~

 

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

It’s cloudy early this morning here at my place, with calm winds, and a chilly low temperature of 49.5 degrees , and the relative humidity is 85%.

1210pm, it’s getting cloudy here in Kula, and I can hear thunder over along the windward sides, with very dark clouds there. Friends tell me that in Haiku there’s a thunderstorm with heavy rain falling.

 

Weather Wit of the day:  Rain Forecast – The wetter report

 

>>> Highest Temperature Saturday, February 21, 2026 – 91 at Titusville, FL
>>> Lowest Temperature Sunday, February 22, 2026 – minus 17 at Crosby, ND

 

Hawaii’s Broad Brush Weather Overview…as of 909am Sunday: Flash flooding will be possible over island interiors this afternoon and over windward and mountain areas tonight, as moist and unstable trades build into the area. Trades then persist through mid-week becoming increasingly stable with time.

Short Term Update…as of 906am Sunday: Cold northwest flow aloft supports moderate instability noted on this morning`s atmospheric soundings out of Lihue and Hilo. The islands reside in a favorable thermodynamic environment, that will be particularly sensitive to developing low-level convergence, namely among emerging sea breeze boundaries this afternoon. Deep, slow-moving convection/thunderstorms will therefore be possible over island interiors. Confidence is hindered by lingering high clouds over portions of Oahu which may limit sea breeze development, but daytime heating is in full swing on Kauai, Molokai, and Maui.

Thunderstorms may develop over the higher terrain of the Big Island this afternoon, where they are considerably less likely to result in a flash flooding threat. Trades then return tonight. The mechanism for low-level convergence will shift to terrain, and will therefore refocus the flash flooding threat over windward and mountain areas for tonight. Trades will gradually strengthen, becoming breezy by early morning Wednesday, which will lead to decreasing convergence and increasingly progressive shower motion with time. A Flood Watch has therefore been issued for Kauai, Oahu, Molokai, and Maui.

 

Here’s a near real-time Wind Profile of the Pacific Ocean – Zoom Earth – 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…as of 430am Sunday: A strong high pressure system building far north of the Hawaiian Islands continues to push a low level trough towards the state. This trough will continue to block large scale trade winds, with light and variable winds for all waters. Land and sea breezes expected for near shore waters of all islands. The low level trough will move into the islands from the north tonight through Monday. Fresh to strong trade winds and moderate to heavy rain showers and isolated thunderstorms will blow in across the region. Trade winds weaken again and veer more southeasterly from Thursday into Friday, as another cold front approaches the island chain from the west.

Surf along exposed north and east facing shores will quickly build through the day Monday, as a long period north-northeast (010-020 degree) swell from a broad storm force low develops off the northwest Pacific coast next weekend. A large area of northerly gales between this system and a 1040 millibar blocking high will continue to drift southward. Surf heights will exceed advisory levels by Monday afternoon, possibly reaching low end warning levels by Monday night, for exposed north and east facing shores lasting through Tuesday. Although a gradual downward trend is anticipated by Wednesday, additional pulses from this same system will keep surf above advisory levels along east facing shores through much of the week. This swell direction will bring surf into some typically protected areas such as Kua Bay, West Maui, and exposed shores of Lanai.

Other impacts from this north-northeast swell direction will include overwash along vulnerable sections of coastline and roadways by Monday night, during the early morning high tide cycles. Mariners can also anticipate harbor surges at Kahului and Hilo.

Surf along exposed west facing shores will rise early in the upcoming new week, as a long-period northwest swell arrives from a recent broad storm force low over the far northwest Pacific. This swell will slowly fade into Wednesday.

 

Ten Things To Think About As You Plan Your Kauai Vacation - Honu Point



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 Indian Ocean:  There are no active tropical cyclones

South Indian Ocean: 

Tropical Cyclone 22S (Horacio) is located approximately 634 NM east of Port Louis, Mauritius

https://www.metoc.navy.mil/jtwc/products/sh2226.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:  The Hidden Impact of Polluted Snow

As Canada experiences record snowfall, new research from the University of Waterloo suggests that tiny amounts of industrial pollution trapped in snow can change how sunlight reaches the ground below and significantly alter fragile environments.

The culprit is black carbon, a sooty form of pollution produced when fossil fuels burn incompletely. It can come from vehicle exhaust, industrial emissions and other combustion sources. While black carbon is already known to contribute to warming, the Waterloo research highlights another, less visible effect: how it alters the “light environment” under snow in ways that affect plant growth.

Even at the height of winter, some sunlight is transmitted through snow and reaches soil, seeds and vegetation beneath. Snow doesn’t let all light through equally. As it propagates certain wavelengths of light and absorbs others that are vital for biological processes, like seed germination, cold activation tolerance and chlorophyll production, it can affect the development of vegetation that’s just below the snow. Conversely, snow reflects light at specific wavelengths that can actually disrupt plant dormancy and stimulate stem growth, influencing how higher plants develop.

Read more at: University of Waterloo