Friday, March5, 2021
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Marine Weather and Tides
Hawi, HI

Version 3.4
NOTICE
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 6:41AMSunset 6:33PM Friday March 5, 2021 9:18 AM HST (19:18 UTC) Moonrise 12:24AMMoonset 11:42AM Illumination 54% Phase: Third Quarter Moon; Moon at 22 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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PHZ121 Alenuihaha Channel- 338 Am Hst Fri Mar 5 2021
.small craft advisory in effect through Saturday afternoon...
Today..East winds 20 knots. Wind waves 6 feet. North swell 6 feet and northwest 5 to 6 feet. Scattered showers.
Tonight..East winds to 25 knots. Wind waves 6 feet. North swell 7 feet and northwest 5 feet. Scattered showers.
Saturday..East winds to 30 knots. Wind waves 8 feet. North swell 7 feet and northwest 4 to 5 feet. Scattered showers.
Saturday night..East winds to 25 knots. Wind waves 8 feet. North swell 6 feet and north 4 feet. Scattered showers.
Sunday..East winds to 30 knots. Wind waves 9 feet. North swell 5 feet and north 3 feet. Scattered showers.
Sunday night..East winds to 30 knots. Wind waves 10 feet. Northeast swell 5 feet and north 3 feet. Scattered showers.
Monday..East winds to 30 knots. Wind waves 11 feet. Northeast swell 5 feet and northwest 3 feet. Scattered showers.
Tuesday..East winds to 30 knots. Wind waves 12 to 13 feet. Northeast swell 5 feet and northwest 3 feet. Frequent showers.
PHZ100 338 Am Hst Fri Mar 5 2021
Synopsis for hawaiian coastal waters.. A strong high pressure system far north of the hawaiian islands will drift slowly southeastward over the next several days. Trade wind speeds will increase into the fresh to strong range today, and into the strong to near gale range from Sunday through Wednesday.


7 Day Forecast for Marine Location Near Hawi, HI
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location: 20.41, -156.09     debug


Area Discussion for -
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FXHW60 PHFO 051333 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 333 AM HST Fri Mar 5 2021

SYNOPSIS. A high to the north will maintain breezy trade winds over the area through the weekend. The trade winds are pushing remnants of a front over the islands, focusing showers over mainly windward areas. Rainfall may become heavier and more widespread as deeper moisture spreads over the area from the southeast starting Sunday. Next week, a new high may produce windy weather.

DISCUSSION. A 1033 mb surface high northwest of the main Hawaiian islands is producing breezy northeast to east trade winds over the islands. Radars are showing numerous showers moving over the islands from the northeast. These showers are part of an old frontal band caught up in the trade winds. Breezy trade winds will continue through the weekend. Windward areas will remain rather wet with some showers spreading leeward on the smaller islands, mainly during the nights and early mornings.

The global models are showing deeper moisture spreading over the islands from the southeast starting on Sunday. It is too soon to know the details of this developing pattern, but it looks as if rainfall will become heavier and more widespread starting on the Big Island, then spreading northwest over the other islands. Heavy rain and thunderstorms will be possible on the Big Island with ice and snow over the upper elevations.

Moisture over the islands will subside by the middle of next week. High pressure building far north of the area and a trough developing near the islands may produce very windy weather through mid-week.

AVIATION. The remnants of a front remain over the islands overnight, and it continues to bring clouds and showers to the region. Showers are primarily being brought in by the trade winds, with the majority of MVFR conditions being found on the east sides of the islands. Showers have been heaviest west of Maui over the last several hours. AIRMET SIERRA was recently expanded and is now in effect for mountain obscuration for Kauai, Oahu and Molokai.

Conditions on the remaining islands are predominantly VFR, but that could change as parts of the front move down the island chain. High clouds continue to move over the islands from west to east, and are expected to remain overhead through today. No other AIRMETs are in effect or expected in the near term.

MARINE. A strong high pressure system far north of the Hawaiian Islands will drift slowly southeastward over the next several days. Trade wind speeds will increase into the fresh to strong range through tonight, and into the strong to near gale range from Sunday through Wednesday. Gale conditions may develop over the windier eastern waters and channels next week.

A Small Craft Advisory (SCA) was expanded in coverage this morning to include all windward waters and most eastern channels today due to a combination of strengthening trade winds and elevated seas. SCA conditions will likely continue for most coastal waters from Sunday onward due to strengthening trade winds and building seas.

The current northwest swell will decrease today as an overlapping northerly swell moves into the region starting later this afternoon through Saturday. This new overlapping northerly swell will bring surf heights along north facing shores to near High Surf Advisory (HSA) levels by Saturday before slowly diminishing on Sunday. The forerunners of the next northwest swell will arrive on Sunday with overlapping northwest and north swell energy producing continued medium size surf along north and west facing shores on Sunday and Monday, then decreasing to smaller size surf on Tuesday and Wednesday.

Strengthening trade winds will increase surf along east facing shores this weekend with a building trade wind swell. Surf will likely reach HSA levels along exposed east facing shores on Tuesday and possibly exceed High Surf Warning levels on Wednesday.

Background south swells will provide small surf to south facing shores through Wednesday.

HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 PM Saturday for all Hawaiian waters except Maui County and Oahu leeward waters.

DISCUSSION . Donaldson AVIATION . M Ballard MARINE . Jelsema/Bohlin


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KWHH1 29 mi49 min S 1 G 5.1 74°F 76°F1018 hPa
KLIH1 - 1615680 - Kahului Bay, Maui, HI 39 mi49 min E 9.9 G 12 72°F 74°F1019.3 hPa
51205 46 mi23 min 76°F8 ft
ILOH1 - 1617760 - Hilo, HI 72 mi49 min ESE 1.9 G 2.9 68°F 77°F1018.4 hPa

Wind History for Kawaihae, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kahului, Kahului Airport, HI38 mi25 minENE 11 G 1810.00 miA Few Clouds74°F59°F60%1019.5 hPa

Link to 5 minute data for PHOG

Wind History from HOG (wind in knots)
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E5NE4E6NE5NE3N3NE5CalmCalmNE4NE8
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Tide / Current Tables for Mahukona, Hawaii Island, Hawaii
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Mahukona
Click for Map
Fri -- 12:23 AM HST     Moonrise
Fri -- 05:01 AM HST     0.52 feet Low Tide
Fri -- 06:39 AM HST     Sunrise
Fri -- 08:08 AM HST     0.72 feet High Tide
Fri -- 11:41 AM HST     Moonset
Fri -- 02:29 PM HST     0.02 feet Low Tide
Fri -- 03:32 PM HST     Last Quarter
Fri -- 06:30 PM HST     Sunset
Fri -- 10:33 PM HST     1.93 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.10.90.70.60.50.60.70.70.70.60.50.30.1000.20.40.71.11.51.81.91.9

Tide / Current Tables for Makena, Maui Island, Hawaii
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Makena
Click for Map
Fri -- 12:26 AM HST     Moonrise
Fri -- 04:46 AM HST     0.52 feet Low Tide
Fri -- 06:42 AM HST     Sunrise
Fri -- 08:02 AM HST     0.52 feet High Tide
Fri -- 11:42 AM HST     Moonset
Fri -- 02:14 PM HST     0.02 feet Low Tide
Fri -- 03:32 PM HST     Last Quarter
Fri -- 06:32 PM HST     Sunset
Fri -- 10:27 PM HST     1.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.210.80.60.50.50.50.50.50.50.40.30.20.100.10.20.40.71.11.41.61.71.7

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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