Friday, January24, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Nanawale Estates, HI

Version 3.4
NOTICE
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 6:56AMSunset 6:08PM Friday January 24, 2020 6:42 AM HST (16:42 UTC) Moonrise 6:57AMMoonset 6:15PM Illumination 0% Phase: New Moon; Moon at 29 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
PHZ122 Big Island Windward Waters- 329 Am Hst Fri Jan 24 2020
Today..East winds 10 knots. Wind waves 4 feet. Northwest swell 8 feet. Scattered showers in the morning. Isolated showers in the afternoon.
Tonight..East winds 15 knots. Wind waves 4 feet. Northwest swell 7 feet. Isolated showers.
Saturday..East winds 20 knots. Wind waves 5 feet. Northwest swell 9 feet. Isolated showers.
Saturday night..East winds 20 knots. Wind waves 6 feet. Northwest swell 12 feet. Isolated showers.
Sunday..East winds 20 knots. Wind waves 6 feet. Northwest swell 11 feet. Isolated showers.
Sunday night..East winds 20 knots. Wind waves 6 feet. Northwest swell 10 feet. Isolated showers.
Monday..East winds 20 knots. Wind waves 7 feet. Northwest swell 7 to 9 feet. Isolated showers.
Tuesday..Southeast winds 15 knots. Wind waves 6 to 7 feet. Northwest swell 6 to 7 feet. Isolated showers.
PHZ100 329 Am Hst Fri Jan 24 2020
Synopsis for hawaiian coastal waters.. A surface ridge will remain over the waters today. High pressure will build north of the area tonight and Saturday behind a passing front north of the state, then persist northeast of the island chain through early next week. A large northwest swell will build tonight and Saturday, then linger through the remainder of the weekend.


7 Day Forecast for Marine Location Near Nanawale Estates, HI
   Hourly   EDIT   Help
location: 19.49, -154.81     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXHW60 PHFO 241416 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 416 AM HST Fri Jan 24 2020

SYNOPSIS. A stable land and sea breeze pattern will continue through this afternoon for most islands under a weak subtropical ridge. A weakening cold front will move into Kauai and Niihau later tonight, spreading clouds and showers over both islands through Saturday. Trade winds also return late Friday afternoon through Saturday time period spreading windward and mountain showers to all islands. Winds shift towards a more southeasterly direction over the western islands on Sunday and Monday pushing the remnants of the front northward away from the state. Land and sea breezes are forecast in a stable light wind pattern from Tuesday into Thursday. Another cold front may bring wet weather trends in the extended forecast for next weekend.

DISCUSSION. Broken clouds over the western islands of Maui and Hawaii Counties are associated with low level wind convergence around the high pressure ridge lingering over the Hawaiian Islands. These clouds are fairly stable under the trade wind subsidence inversion and are not high enough to produce more than isolated rainfall. Low cloud ceilings will linger along the north and windward slopes of Maui and the Big Island today with diminishing coverage elsewhere. A weakening cold front shows up on this mornings satellite imagery roughly 150 miles northwest of Kauai. This frontal zone will move over the island later this evening.

Today through Sunday, a cold front will approach Kauai from the northwest will spread clouds and showers across the Garden Isle later this evening. The forward motion on this front will stall out with clouds and showers lingering over Kauai and Niihau through Saturday. Trade winds will bleed out ahead of this cold front later this afternoon, spreading windward and mauka showers eastward down the island chain through Saturday. Moderate trade winds will continue to blow across the eastern half of the state through Sunday. Wind directions across the western islands will veer towards a more southeasterly direction on Sunday and Monday. These more southerly winds will push the remnant cold frontal clouds and showers northward away from the western islands with improving weather conditions forecast over Kauai County.

Monday through Friday, a large scale trough anchored over the Central Pacific far north of the islands will bring another round of stable light winds with local scale land and sea breezes through the work week. Long range guidance shows another weakening cold front moving into the western islands on Friday. Additional clouds and showers are possible over Kauai and Oahu by next weekend and wet weather trends were introduced in the extended range forecast grids from next Friday onward. However, large differences remain between the American (GFS) and European (ECMWF) models. The GFS model brings the front into Kauai and Oahu on Friday, while the European model keeps the entire frontal boundary north of the island chain. Expect these differences in frontal placement to diminish as the forecast time period grows shorter.

AVIATION. This morning, a dissipating cold front approaching the state from the northwest, combined with surface high pressure over the islands, will again allow for light and variable flow. Expect VFR conditions with most cloud bases above 3000 feet. However, a weak moisture push from the southeast will bring a slight chance of showers to the eastern portions of the Big Island.

For this afternoon, sea breeze development appears likely along most coastal regions with mainly dry conditions. As the aforementioned front approaches this evening, weak tradewind flow may return to Kauai and Oahu.

No AIRMETS are anticipated at this time.

MARINE. Light and variable winds will continue this morning, before shifting around to the north and northeast by late this afternoon, then increasing to moderate and fresh levels tonight. Locally strong easterly trade winds will then prevail through the weekend. A new front will approach and stall out to the west of the islands early next week, diminishing the winds over the western islands while moderate to locally strong east- southeasterly winds hang on in the unsheltered areas around Maui and the Big Island. Another front approaching from the northwest during the middle and latter part of next week, will diminish winds further, with light and variable winds prevailing across most of the island chain.

Seas have dropped below Small Craft Advisory (SCA) thresholds early this morning, therefore the advisory has been cancelled. Seas are expected to rise to SCA levels across a large chunk of the marine area again tonight and Saturday as a new large northwest swell arrives. Trade winds will also strengthen to SCA levels across portions of the marine area this weekend. SCAs will likely be required for most marine zones through the weekend due to a combination of winds and seas, with some areas holding onto SCA level winds and/or seas into early next week.

Surf will keep pumping along north and west facing shores as a progressive weather pattern across the northern Pacific keeps a series of large northwest swells moving through the islands. The current swell has dropped below High Surf Advisory (HSA) levels, therefore the advisory has been cancelled.

A new large northwest swell will fill in from northwest to southeast down the island chain late tonight into Saturday with surf peaking at warning levels on Saturday. This swell will be on a downward trend Sunday, but may still hold at warning levels during the day before dropping to advisory levels Sunday night. As this swell eases early next week, advisory level surf may hold through Monday before dropping below HSA threshold Monday night and Tuesday. Over the Big Island, this swell will likely bring advisory level surf to exposed west facing shores over the weekend. Another large northwest swell will be possible during the middle to latter part of next week.

Surf along exposed east facing shores will remain small through the period due to the lack of persistent trades locally and upstream across the eastern Pacific.

Surf along south facing shores will remain small through next week. A couple background south swells expected over the weekend and again on Tuesday should be enough to keep things from going flat.

HFO WATCHES/WARNINGS/ADVISORIES. None.



DISCUSSION . Bohlin AVIATION . JT MARINE . Jelsema


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
ILOH1 - 1617760 - Hilo, HI 21 mi55 min SSW 2.9 G 4.1 67°F 79°F1015.6 hPa
51206 22 mi57 min 77°F9 ft

Wind History for Hilo, Hilo Bay, Kuhio Bay, HI
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
Last
24hr
S2
SW3
W1
S2
SE5
E5
G9
E1
G6
NE6
NE4
NE2
G6
N4
G7
NE3
G6
NW4
G7
SW1
S2
S1
SW1
S2
SW1
W1
S1
SW1
S2
SW3
1 day
ago
SW2
SW1
W2
S4
G8
SE6
G10
SE8
G12
SE8
G13
SE8
G16
SE7
G12
SE6
G10
SE6
G9
S1
G4
SW2
W1
S2
S1
S2
S1
S2
S1
SW2
S2
S2
SW2
2 days
ago
SW2
SW2
--
SE5
G8
SE8
G12
SE8
G12
SE7
G13
SE9
G14
SE7
G16
SE8
G11
E2
G6
SE2
S2
W1
W1
W1
--
SW1
S1
SW1
SW3
G6
SW2
G7
SW2
SW1

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hilo, Hilo International Airport, HI21 mi50 minWSW 510.00 miMostly Cloudy68°F61°F78%1017.2 hPa

Link to 5 minute data for PHTO

Wind History from HTO (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
Last 24hrSW7SW6SW5SW5E5E84E56NE8NE5N4CalmNE5SW3SW4CalmSW4SW3SW3CalmSW4SW5SW5
1 day agoSW6W6SW4S6S7SE11E10SE13SE12
G18
E11SE8S3SW3SW3SW3W5SW5SW5SW4SW4SW6SW7SW7SW7
2 days agoSW6SW6CalmS6SE7S8E12
G16
SE11
G19
E12E12SE5SE3S4S4W3SW3SW4SW4SW3SW3W6W7SW7SW5

Tide / Current Tables for Hilo, Hawaii Island, Hawaii
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Hilo
Click for Map
Fri -- 03:06 AM HST     2.83 feet High Tide
Fri -- 06:57 AM HST     Sunrise
Fri -- 06:58 AM HST     Moonrise
Fri -- 10:27 AM HST     0.28 feet Low Tide
Fri -- 11:44 AM HST     New Moon
Fri -- 03:00 PM HST     1.21 feet High Tide
Fri -- 06:07 PM HST     Sunset
Fri -- 06:16 PM HST     Moonset
Fri -- 08:21 PM HST     0.05 feet Low 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
1.72.32.72.82.72.41.91.30.80.50.30.30.50.81.11.21.10.90.60.20.10.10.30.8

Tide / Current Tables for Hilo, Hilo Bay, Hawaii
   EDIT      (on/off)   Help   One Week of Data
Hilo
Click for Map
Fri -- 03:25 AM HST     2.90 feet High Tide
Fri -- 06:57 AM HST     Sunrise
Fri -- 06:58 AM HST     Moonrise
Fri -- 10:04 AM HST     0.54 feet Low Tide
Fri -- 11:44 AM HST     New Moon
Fri -- 02:49 PM HST     1.42 feet High Tide
Fri -- 06:07 PM HST     Sunset
Fri -- 06:16 PM HST     Moonset
Fri -- 08:49 PM HST     -0.31 feet Low 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
1.42.12.62.92.92.62.11.510.70.50.60.91.11.41.41.310.50.1-0.2-0.3-0.10.3

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
Wind Forecast for (11,2,3,4)
      (on/off)   Help

Ground Weather Radar Station South Shore, HI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines 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.