Flood Advisory

The National Weather Service in Honolulu has issued a * Flood advisory for... The island of Maui in Maui County * Until 415 PM HST * At 109 PM HST, radar indicated heavy rain along the southeast slopes of Haleakala. Rain was falling at a rate of 1 to 2 inches

Read more information

High Surf Advisory

...HIGH SURF ADVISORY IN EFFECT FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong high pressure will result in elevated surf along east facing shores into early next week. ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * SURF...6 to 10 feet along east shores.

Read more information

 
1-4 foot
0-3 foot
1-3 foot
1-3 foot

A series of small west-northwest swells are expected over the next few days. Resultant surf will remain below advisory levels. A larger, long period swell is expected Tuesday night which will spread down the island chain on Wednesday and produce near advisory level surf. High pressure in the East Pacific will send a short period swell into east facing shores starting Monday which will continue into next week. This could produce advisory level surf along east facing shores. Winds and seas will remain below small craft advisory threshold through the holiday weekend.

Hawaii Wave Height Model

Tide Predictions

A single tide at Kahului will be foot at

tide at Kahului was foot at just after midnight, of foot at just after midnight, then of foot at just after midnight, before once again of foot at just after midnight

The sunrise was at 06:52 am this morning and will set at 06:26 pm this evening. The Moon is currently 2 days old, and is in a Waxing Crescent phase. The next First Quarter will occur at 8:09 AM on Friday, February 23rd.

Hawaii Wind Report

Maui Weather

85°/88°
Wind: ENE at 9 mph
Sunrise: 6:49 AM
Sunset: 6:28 PM
current observations as of 1pm February 24th, 2018

Weather Outlook for Saturday, 17th February 2018

Summary

Moisture from a trough near the Big Island will maintain cloudy and wet conditions over the eastern end of the state through the weekend. A drier light wind pattern is in place from Moloka`i to Kauai, so expect fewer showers to start the day. The moisture near the Big Island is expected to drift back toward the west today and Sunday as a potent upper level low drops over the state. The resulting unstable conditions will bring a threat of heavy, flooding showers and thunderstorms across much of the state through the Monday holiday.

Detailed Discussion

No significant changes to the forecast for the remainder of the holiday weekend. With little change in the forecast, have transitioned the Winter Storm Watch for the Big Island Summits to a Winter Weather Advisory, starting at noon today. The Flash Flood Watch for Big Island and Maui still set to start at noon today. There have been lingering showers and thunderstorms southeast of the Big Island over the last several hours, however the bulk of the moisture has remained offshore.

The frontal system near the Big Island has weakened into a trough, but has remained nearly stationary overnight. While showers did start to fade out over the Big Island southeast waters overnight, around midnight, some thunderstorms started to develop in the area, and are lingering in the pre-dawn hours. Have added the slight chance of thunderstorms in this area through this morning. Still anticipating the bigger threat to be later today for the Big Island.

Kauai and Oahu still look to be relatively dry today, but conditions will go downhill tonight as the moisture band lifts to the north and the strong upper level trough to the northwest of the islands moves overhead. The upper level trough remains over the islands through Monday, but the moisture band may begin to break up later Sunday and into Monday. The trough will bring cold upper level temperatures to the region, which could produce heavy showers and thunderstorms. At this time, still holding off on expanding the Flash Flood Watch, but things could change as we see how things start to pan out later today and tonight. Still monitoring the likelihood of gusty winds and hail producing thunderstorms with this system. The thunderstorms being produced overnight have not exhibited any of this behavior, but the upper low will likely change the nature of at least some of the thunderstorms that could impact the area.

The upper level trough lifts to the northeast Monday night and Tuesday, allowing the atmosphere to become more stable through midweek. The GFS and ECMWF show another surface low developing along a trough to the west of the islands Thursday, with another upper level low moving in from the northwest. The models keep this system to the west of the islands with southeast to east winds moving into the islands due to a high pressure system far north northeast of the islands. Have made some modifications the PoPs/Sky/Wx grids for the second half of the week and into next weekend as a result of the last several runs of the models, which suggest lingering shower activity.

Central Valley (Kahului, Spreckelsville):

FLASH FLOOD WATCH IN EFFECT FROM NOON HST TODAY THROUGH MONDAY AFTERNOON. Partly sunny with scattered showers. Highs 80 to 85. Light and variable winds, becoming north around 10 mph this afternoon. Chance of rain 50 percent.

Leeward West (Lahaina, Ka`anapali):

FLASH FLOOD WATCH IN EFFECT FROM NOON HST TODAY THROUGH MONDAY AFTERNOON. Partly sunny with scattered showers. Highs 78 to 84. Light and variable winds. Chance of rain 50 percent.

Windward West (Wailuku, Waiehu):

FLASH FLOOD WATCH IN EFFECT FROM NOON HST TODAY THROUGH MONDAY AFTERNOON. Partly sunny with scattered showers. Highs 63 to 82. Light and variable winds, becoming northeast around 10 mph this afternoon. Chance of rain 50 percent.

Windard Haleakala (Hana, Haiku, Makawao):

FLASH FLOOD WATCH IN EFFECT FROM NOON HST TODAY THROUGH MONDAY AFTERNOON. Partly sunny. Scattered showers this morning, then showers likely this afternoon. Hazy. Highs around 80 at the shore to around 62 at 5000 feet. East winds 10 to 15 mph. Chance of rain 60 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

FLASH FLOOD WATCH IN EFFECT FROM NOON HST TODAY THROUGH MONDAY AFTERNOON. Partly sunny. Scattered showers this morning, then showers likely this afternoon. Highs around 84 at the shore to 59 to 70 upcountry. Light and variable winds. Gusts up to 20 mph. Chance of rain 60 percent.

Haleakala Summit

FLASH FLOOD WATCH IN EFFECT FROM NOON HST TODAY THROUGH MONDAY AFTERNOON. Partly sunny with scattered showers. Highs around 51 at the visitor center to around 46 at the summit. South winds around 10 mph early this morning, becoming light and variable, then becoming southeast around 10 mph this afternoon. Chance of rain 50 percent.

Photo of the Day


Read more