Friday, January22, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Paia, HI

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:03AMSunset 6:11PM Friday January 22, 2021 4:08 PM HST (02:08 UTC) Moonrise 1:25PMMoonset 1:55AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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
    EDIT      (on/off)   Help
PHZ119 Maalaea Bay- 334 Pm Hst Fri Jan 22 2021
.small craft advisory in effect through Sunday afternoon...
Tonight..North winds to 25 knots. Wind waves 4 feet.
Saturday..North winds to 30 knots. Wind waves 4 feet.
Saturday night..North winds to 25 knots. Wind waves 4 feet. Isolated showers in the evening, then scattered showers after midnight.
Sunday..North winds to 25 knots. Wind waves 3 feet. Scattered showers.
Sunday night..Northeast winds to 30 knots. Wind waves 4 feet. Scattered showers.
Monday..Northeast winds to 30 knots. Wind waves 5 feet. Scattered showers.
Monday night..North winds to 25 knots. Wind waves 5 feet. Scattered showers.
Tuesday..North winds to 25 knots. Wind waves 4 feet. Scattered showers.
Wednesday..North winds to 25 knots becoming northeast 15 knots. Wind waves 3 feet. Scattered showers.
PHZ100 334 Pm Hst Fri Jan 22 2021
Synopsis for hawaiian coastal waters.. High far northeast of the area will support strong to near gale force winds tonight. The high will strengthen over the weekend into early next week with trade winds becoming stronger statewide. A large northwest swell will move down the island chain over the weekend.


7 Day Forecast for Marine Location Near Paia, HI
   Hourly   EDIT   Help
location: 20.9, -156.36     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXHW60 PHFO 230142 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 342 PM HST Fri Jan 22 2021

SYNOPSIS. Strong and gusty trade winds will become especially strong over the weekend, delivering passing clouds and showers, some briefly heavy, mainly dampening windward areas. More widespread rainfall may develop early next week as winds remain strong and shift to the southeast.

DISCUSSION. Winds did eventually nudge upwards today, so the adjustments to the winds for today were in line. Have made some tweaks to the winds for tonight through tomorrow night to better align some areas with the Wind Advisory that has now been posted for several areas. Winds are likely to remain elevated for several of these areas into the start of the new week, so expect the Wind Advisory to be extended, and possibly expanded as the event unfolds. While the Wind Advisory has been issued for portions of most of the islands, advisory levels winds are most likely over and immediately downwind of the mountains. Otherwise, no changes in the grids or the forecast philosophy with the afternoon page.

The morning surface analysis continued to depict a 1035 mb high to the northeast of the islands, along with a trough and a dying stationary front to the northwest. The ridge associated with the high is expected to nudge closer to the islands tonight, tightening the pressure gradient over the island, which should cause an uptick in winds. As the trough and front to the northwest move to the east over the weekend, and a low potentially develops along these boundaries, we can expect the wind direction to become a little more southeasterly by early next week. At the same time, the high to the northeast will be reinforced over the weekend and strength, causing the winds to increase further.

A broad mid to upper level low to the south of the state continues to drift away from the islands. Some mid, upper and layered clouds associated with the system are found just outside the coastal waters to the south of the Big Island.

Cooler than normal mid-level temperatures associated with the low are supporting a somewhat unstable island atmosphere. Radar wind profile data continues to show low level moisture riding in on the trades extending upwards to around 10 thousand feet. Combined with the stronger trade winds mentioned above, orographic forcing is helping to generate showers over and immediately downstream of the terrain. Meanwhile, many leeward communities remain mostly dry.

As the winds become more southeasterly, a moisture convergence band extending southeast from the low creeps towards the islands from the south. The latest guidance indicates this band will move over portions of the islands from Monday into Wednesday, bringing precipitable water values close to 2", layered cloudiness, and widespread rainfall. Deep moisture and modest instability are expected, so the chance of thunderstorms appears too low to mention thus far. A drying trend is loosely expected thereafter as the band shifts west of the area. High pressure to the distant northeast will continue to support locally strong trade winds.

AVIATION. A strong surface high will remain far northeast of the area through the next few days, so locally strong easterly trade winds will continue. Sustained speeds of 30kts or greater tonight and tomorrow in the Alenuihaha Channel and south of the Big Island could warrant an AIRMET Tango. Low-level wind shear will also need to be closely monitored throughout this period.

Showers will continue to favor eastern sections of the islands during the night and early morning hours. VFR conditions will prevail across the main Hawaiian Islands throughout the period, with the exception of brief MVFR conditions in any heavier showers that do occur.

AIRMET Tango remains in effect for moderate low-level turbulence in areas southwest to west of the mountains of all islands. The persistence of breezy to strong easterly trade winds across the islands will likely allow for this low-level turbulence to continue well into the weekend. AIRMET Tango also remains in effect moderate turbulence between FL250 and FL300, but Ellrod turbulence index values over the islands should become less favorable over the next few hours.

MARINE. A surface high far northeast of the area is generating moderate to locally strong trade winds. The high will strengthen Saturday, increasing trade winds across the entire area through the first part of next week. A Small Craft Advisory is in effect for all coastal waters for strong to near gale force trade winds as well as building seas from the trade wind swell and a large west- northwest swell.

Offshore NDBC buoy 51101 just registered at swell height of 7 feet at 21 second period which means the long period forerunners of the new northwest swell should arrive tonight for Kauai, overnight to early morning hours for Oahu, and in the morning for Maui. A High Surf Advisory (HSA) has been issued for exposed north and west facing shores of the smaller islands starting tomorrow morning. This swell is expected to peak Saturday with an 18 second period and high- end advisory or low- end warning level. The more westerly direction of this swell will allow west facing shores of the Big Island to experience advisory level surf, likely later in the day Saturday. Swell and surf will lower gradually Sunday and Monday, then become rather small for this time of year on Tuesday and Wednesday.

Trades will strengthen this weekend. Rough, short- period surf will gradually rise and a HSA has been issued for exposed east facing shores starting tomorrow. The HSA for east facing shores may need to be extended as strong trades persists for several days.

Small, mainly background, southerly swells are expected over the next several days. A small bump in south-southwest surf is expected to gradually fill in Monday, peak Monday night and Tuesday, then lower Wednesday through Thursday.

HFO WATCHES/WARNINGS/ADVISORIES. Wind Advisory until 6 AM HST Sunday for Kauai Leeward-Kauai Mountains-Oahu South Shore-Oahu Koolau-Olomana-Waianae Mountains- Molokai Windward-Lanai Makai-Kahoolawe-Maui Windward West-Maui Leeward West-Windward Haleakala-Leeward Haleakala-South Big Island-Big Island North and East-Kohala-Big Island Interior.

High Surf Advisory from 6 AM Saturday to 6 AM HST Sunday for east facing shores of Kauai-Oahu-Molokai-Maui-Big Island.

High Surf Advisory from 6 AM Saturday to 6 AM HST Sunday for north and west facing shores of Niihau-Oahu-Molokai-Big Island.

High Surf Advisory from 6 AM Saturday to 6 AM HST Sunday for north facing shores of Maui.

Small Craft Advisory until 6 PM HST Sunday for all Hawaiian waters-



DISCUSSION . M Ballard AVIATION . Donaldson/Vaughan MARINE . Almanza


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KLIH1 - 1615680 - Kahului Bay, Maui, HI 6 mi69 min ENE 19 G 29 77°F 76°F1014.9 hPa (-1.6)
51205 9 mi73 min 77°F8 ft
51213 36 mi73 min 79°F3 ft
51202 - Mokapu Point, HI (098) 78 mi73 min 78°F8 ft

Wind History for Kahului, Kahului Harbor, HI
(wind in knots)    EDIT      (on/off)   Help
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
Last
24hr
E16
G24
E16
G23
E14
G23
E4
G9
E8
G14
E11
G17
NE10
E8
G11
E9
G12
E10
G14
NE8
G13
NE9
E9
G13
E8
G14
NE13
G16
NE7
G11
E10
G15
NE14
G18
NE17
G22
E16
G24
E19
G26
NE18
G25
E21
G28
NE19
G29
1 day
ago
E16
G22
E14
G19
E13
G19
E9
G14
E3
G10
NE6
G11
NE12
G15
N9
G13
NE13
G17
NE12
NE12
G16
NE13
G17
E10
G14
NE7
G12
NE9
G14
E10
NE7
G11
NE13
G17
E18
G24
E14
G20
E18
G24
E16
G23
E21
G26
E19
G25
2 days
ago
NE17
E15
G20
E20
NE12
G17
NE13
G16
E4
G9
NE8
G12
SE3
G6
SE4
NE4
SE1
G4
E2
N7
G10
NE2
E4
G10
NE10
N1
E11
G14
E12
G16
E17
G21
E16
G21
E17
E19
G24
E17
G23

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kahului, Kahului Airport, HI4 mi75 minENE 23 G 3010.00 miPartly Cloudy and Windy82°F60°F47%1014.6 hPa
Lahaina - West Maui, HI17 mi84 minE 15 G 2710.00 miA Few Clouds79°F61°F54%1015.2 hPa

Link to 5 minute data for PHOG

Wind History from HOG (wind in knots)
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
Last 24hrE18
G25
E18
G26
NE10
G19
NE8NE10NE9NE9E9NE8
G17
NE10
G16
NE9NE12E11NE12NE9NE8NE17
G25
NE20
G27
NE19
G31
NE21
G31
E19
G32
NE19
G32
NE23
G30
NE22
G33
1 day agoE15
G20
NE12
G20
E11
G17
E11E8
G19
NE10NE10NE12NE12NE13NE11E11NE9NE11NE9NE8NE13
G21
NE19
G26
E17
G25
E19
G31
E24
G30
E21
G35
E17
G32
E17
G30
2 days agoNE15NE14
G20
NE10NE12E7CalmSE4SE6S4SE35CalmNE3E7NE5NE5NE12
G17
E16
G22
E16
G21
E14
G22
NE16
G24
NE18
G27
NE15
G24
E15
G26

Tide / Current Tables for Kahului, Kahului Harbor, Hawaii
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Kahului
Click for Map
Fri -- 12:04 AM HST     1.74 feet High Tide
Fri -- 01:55 AM HST     Moonset
Fri -- 07:04 AM HST     Sunrise
Fri -- 01:25 PM HST     Moonrise
Fri -- 04:10 PM HST     0.26 feet Low Tide
Fri -- 06:10 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.71.71.61.61.51.41.41.31.31.31.210.90.70.50.30.30.30.40.711.31.61.8

Tide / Current Tables for Kahului, Kahului Harbor, Hawaii (2)
   EDIT      (on/off)   Help   One Week of Data
Kahului
Click for Map
Fri -- 01:55 AM HST     Moonset
Fri -- 06:14 AM HST     0.90 feet Low Tide
Fri -- 07:04 AM HST     Sunrise
Fri -- 08:58 AM HST     1.17 feet High Tide
Fri -- 01:25 PM HST     Moonrise
Fri -- 03:39 PM HST     0.33 feet Low Tide
Fri -- 06:10 PM HST     Sunset
Fri -- 11:23 PM HST     2.19 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.91.71.51.31.10.90.911.11.21.110.90.70.50.40.30.50.711.41.822.2

Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS Local Image of Hawaii    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station




Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway.
Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.