Sunday, July25, 2021
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Marine Weather and Tides
Wailea, HI

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 5:56AMSunset 7:08PM Sunday July 25, 2021 6:53 AM HST (16:53 UTC) Moonrise 8:57PMMoonset 7:36AM Illumination 98% Phase: Waning Gibbous; Moon at 16 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PHZ119 Maalaea Bay- 332 Am Hst Sun Jul 25 2021
.small craft advisory in effect through Monday afternoon...
Today..North winds to 25 knots. Wind waves 3 feet in the morning then 2 feet or less.
Tonight..North winds to 25 knots. Wind waves 2 feet or less. Isolated showers in the evening.
Monday..North winds to 25 knots. Wind waves 2 feet or less. Isolated showers in the morning, then scattered showers in the afternoon.
Monday night..North winds to 25 knots. Wind waves 2 feet or less.
Tuesday..North winds 20 knots. Wind waves 2 feet or less.
Tuesday night..North winds 20 knots. Wind waves 2 feet or less.
Wednesday..North winds 20 knots. Wind waves 2 feet or less.
Thursday..North winds to 25 knots. Wind waves 2 feet or less.
PHZ100 332 Am Hst Sun Jul 25 2021
Synopsis for hawaiian coastal waters.. A surface high pressure system located far northeast of the islands will maintain locally strong trade winds through late Monday. The trade winds are expected to diminish slightly Tuesday and Wednesday as this high weakens. Building high pressure to the north and a surface trough passing by well south of the state may result in locally strong trades returning Thursday.


7 Day Forecast for Marine Location Near Wailea, HI
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location: 20.7, -156.43     debug


Area Discussion for -
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FXHW60 PHFO 251330 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 330 AM HST Sun Jul 25 2021

SYNOPSIS. Moderate to breezy trade winds will remain through next week. Showers will continue to ride in on the trades, with an increase in rainfall and humidity likely this afternoon into Tuesday. Brief downpours are expected during this time especially across windward and mountain areas.

DISCUSSION. Persistent high pressure north of the main Hawaiian islands keeps the pressure gradient steep enough to support moderate to breezy trade winds across local waters this morning. Clouds and showers continue to favor windward and mauka areas, representing a weather pattern expected to remain in place through the forecast period. Expect remnant moisture associated with former Tropical Cyclone Guillermo to move through the state today. Heavier showers will affect windward and mountain areas as well as Kona slopes of the Big Island starting this afternoon. Increased moisture will spread to rest of the island chain by Monday. The greatest rainfall, with possible brief downpours, will likely occur over the Big Island and windward Maui from this afternoon through Monday.

By Tuesday afternoon, a drier airmass will begin to move into the eastern half of the state, while moisture continues to linger over the far western end of the state. By Thursday we should see this increased moisture move off to our west as drier trade wind weather returns across the state from the east.

AVIATION. Moderate to occasionally breezy east northeasterly trades will act to concentrate most scattered shower activity along the windward coasts and slopes today. Expect periods of MVFR ceilings and visibility, especially for windward Big Island. Isolated showers over leeward sides.

AIRMET TANGO remains in effect for areas below 9000 feet over and immediately south thru west of mountains due to tempo moderate turbulence.

AIRMET SIERRA remains in effect for north thru east sections of Kauai, Oahu, and the Big Island above 2000 feet for mountain obscuration from clouds and showers.

MARINE. A surface high pressure system located far northeast of the state will maintain locally strong trade winds through Monday. Also, expect slightly elevated, rough seas over waters exposed to these gusty trade winds. A Small Craft Advisory (SCA) remains in effect for the typically windier waters adjacent to the islands of Maui County and the Big Island through Monday afternoon. This SCA may need to be extended through Monday night for these same waters. The forecast models indicate the surface high far northeast of the area will weaken from Tuesday through Wednesday, which will likely cause a slight decrease in trade winds speeds from Tuesday through Wednesday. Building high pressure to the north and a surface trough passing by well south of the state may result in locally strong trades returning by Thursday.

The trade winds will produce moderate, choppy surf along east facing shores into this evening. The latest model guidance indicates the trade wind swell will likely trend lower from Monday through mid-week due to the weaker trades in the vicinity of the islands, as well as upstream of the state.

The current small south swell will continue to subside through Monday, so expect surf heights to drop below the normal summertime average later today and tonight. Through mid-week, short- to medium-period southeast trade wind swell energy originating from the Southern Hemisphere will keep small surf along exposed shorelines, such as most of the south facing shores of Kauai and the Big Island, as well as select locations along the south shore of Oahu.

Surf will remain nearly flat along most west and north facing shores through mid-week. Small west-northwest swells, which were produced by Northwest Pacific Tropical Cyclone activity, may arrive along some exposed west and north facing shores starting Thursday or Friday. However, confidence about the timing and the size of these swells remains low at this time.

HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 PM HST Monday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . Powell AVIATION . JT MARINE . Houston


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KLIH1 - 1615680 - Kahului Bay, Maui, HI 14 mi59 min ENE 11 G 15 76°F 79°F1018 hPa
51205 22 mi57 min 78°F7 ft
51213 31 mi57 min 80°F3 ft

Wind History for Kahului, Kahului Harbor, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kahului, Kahului Airport, HI14 mi59 minNNE 11 G 1810.00 miPartly Cloudy77°F72°F85%1018.1 hPa

Link to 5 minute data for PHOG

Wind History from HOG (wind in knots)
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1 day agoNE12
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Tide / Current Tables for Makena, Maui Island, Hawaii
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Makena
Click for Map
Sun -- 04:29 AM HST     0.70 feet High Tide
Sun -- 05:57 AM HST     Sunrise
Sun -- 07:35 AM HST     Moonset
Sun -- 09:40 AM HST     0.00 feet Low Tide
Sun -- 04:59 PM HST     2.28 feet High Tide
Sun -- 07:06 PM HST     Sunset
Sun -- 08:57 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.20.40.60.70.70.60.40.2000.20.50.91.41.92.22.32.21.91.410.60.3

Tide / Current Tables for Kihei, Maui (Hawaii) (2)
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Kihei
Click for Map
Sun -- 05:00 AM HST     1.10 feet High Tide
Sun -- 05:57 AM HST     Sunrise
Sun -- 07:35 AM HST     Moonset
Sun -- 09:50 AM HST     0.00 feet Low Tide
Sun -- 05:30 PM HST     2.68 feet High Tide
Sun -- 07:06 PM HST     Sunset
Sun -- 08:57 PM HST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.30.50.811.110.70.40.100.10.40.91.522.42.72.62.41.91.30.80.4

Weather Map
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GEOS Local Image of Hawaii    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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