Tuesday, December10, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Urban Honolulu, HI

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:56AMSunset 5:51PM Monday December 9, 2019 11:57 PM HST (09:57 UTC) Moonrise 4:18PMMoonset 4:38AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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
PHZ116 Kaiwi Channel- 900 Pm Hst Mon Dec 9 2019
Rest of tonight..East winds 10 knots. Wind waves 3 feet. Northwest swell 6 feet.
Tuesday..East winds 10 knots. Wind waves 3 feet. Northwest swell 8 feet.
Tuesday night..East winds 10 knots. Wind waves 3 feet. Northwest swell 8 feet. Isolated showers.
Wednesday..East winds 15 knots. Wind waves 3 feet. Northwest swell 8 feet. Isolated showers in the morning.
Wednesday night..East winds 15 knots. Wind waves 3 feet. Northwest swell 11 feet increasing to 14 feet after midnight. Isolated showers.
Thursday..East winds 15 knots. Wind waves 3 feet. Northwest swell 14 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Thursday night..East winds 15 knots. Wind waves 4 feet. Northwest swell 12 feet. Scattered showers.
Friday..East winds 20 knots. Wind waves 6 feet. Northwest swell 9 to 11 feet. Scattered showers.
Saturday..East winds 15 knots. Wind waves 6 feet. Northwest swell 6 to 8 feet. Scattered showers.
PHZ100 900 Pm Hst Mon Dec 9 2019
Synopsis for hawaiian coastal waters.. A weak frontal boundary located northwest of kauai will move slowly north through Wednesday. A new front is expected to approach the islands from from the northwest by Wednesday night as a surface high builds in behind it. Expect very large northwest swells from late Wednesday into Friday.


7 Day Forecast for Marine Location Near Urban Honolulu, HI
   Hourly   EDIT   Help
location: 21.29, -157.88     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXHW60 PHFO 100645 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 845 PM HST Mon Dec 9 2019

SYNOPSIS. Light easterly winds will persist through Wednesday, which will allow the land and sea breeze regime to continue for most areas. Outside of a few clouds and showers setting up over interior areas each afternoon due to sea breezes, mostly dry and stable conditions are anticipated through this time. A modest increase in moisture is expected through the second half of the week as an upper disturbance and cold front approach and move into the area. Shower coverage will likely trend up through this time with breezy northeast to east trade winds returning. A more typical trade wind pattern appears likely for the upcoming weekend as drier air fills in.

DISCUSSION. Water vapor imagery showed a ridge extending eastward across the region and a potent shortwave trough far northeast of the state driving a cold front toward the west coast. The surface analysis showed the tail-end of this frontal boundary stretched out from east to west north of Kauai and a weak ridge extending west-southwestward over the islands. Although mostly dry conditions remain in place, an area of enhanced moisture skirting the southeast Big Island waters accompanying a trough passing to the south will continue to support isolated to scattered showers in this area overnight into Tuesday. A few overnight showers will also remain possible across the waters north of Kauai near the stalled frontal boundary.

The latest short-term (through Wednesday) guidance depicts the weak ridge over the islands drifting northward as the stalled frontal boundary just north of Kauai diminishes. This will allow light trades to fill in over the eastern end of the state Tuesday through Wednesday. The land and sea breeze regime, however, remains likely over the western end due to the proximity of this ridge axis. The mostly dry and stable regime should continue with the best chance for a few clouds and showers remaining over interior areas each afternoon due to the sea breezes and peak heating.

For the extended period (Thursday through the weekend), guidance depicts lowering upper heights associated with a strong short wave trough approaching and moving into the area Wednesday night through Friday. Although confidence is beginning to increase as the guidance comes into better agreement, there remains some key differences between the solutions with regard to how far east this upper feature and front make it into the area. Despite these differences, increasing moisture and rainfall chances along with gusty trades remain a possibility by or come Friday as the attendant cold front moves into the area. Breezy trades along with a drying trend will be possible over the weekend as high pressure builds north of the state and the front diminishes.

AVIATION. Light winds with overnight land breezes and afternoon sea breezes will continue. Most of the state will have VFR conditions. The only exception may be some passing MVFR conditions on the windward slopes, especially on the Big Island. No AIRMETs are currently in effect and none are anticipated.

MARINE. A northwest swell continues to spread down across the coastal waters early this evening. The observations from the NDBC buoys, 51001 and 51101, located northwest of Kauai showed this swell was 1 or 2 feet above the Wave Watch III model guidance earlier today. However, the latest observations from those buoys show the swell is now close to 9 feet with a wave period of around 14 seconds. The PacIOOS buoy at Waimea Bay indicates the significant wave height has recently increased to 7 to 8 feet with a wave period of close to 14 seconds. Surf produced by this swell is expected to gradually build, so a High Surf Advisory (HSA) remains in effect for most north and west facing shores of the smaller islands.

A significantly larger northwest swell is expected to arrive Wednesday. This swell will likely cause surf to reach the High Surf Warning criteria along most north and west facing shores of the smaller islands by Wednesday night. This large swell, which is expected to persist into Friday, may also cause surf to reach the HSA criteria along west facing shores of the Big Island starting late Wednesday night or Thursday. The northwest swell is expected to gradually subside from Friday night through Saturday.

The pressure gradient remains disrupted across the main Hawaiian Islands early this evening due to a weakening east-northeast to west-southwest oriented frontal boundary that has stalled about 75 nm north of Kauai. As a result, the trade winds across the coastal waters remain light to locally moderate. This relatively weak background trade wind flow is expected to persist through Wednesday. We do not anticipate winds will reach the Small Craft Advisory (SCA) criteria over any waters through mid-week. That being said, the back to back large northwest swells arriving during the next few days will likely cause seas to build. This will result in SCA conditions due to elevated seas starting early Wednesday morning, and continuing into this weekend.

The forecast guidance, which has been showing some uncertainties recently, appears to indicate a new surface high will build northwest of the islands by Thursday, and move east to a position north of the state later this week. This is expected to push a new front down toward the state from the northwest. The arrival of this front will likely bring stronger northeast winds from Thursday night into Friday. As a result, in addition to the SCA for large seas, winds may reach the SCA criteria over some waters by Friday. For the moment, the forecast indicates these strongest winds will be mainly by over the typically windier waters adjacent to the islands of Maui County and the Big Island, and possibly in the vicinity of Kauai. Mariners should monitor future forecasts for later this week, since conditions are subject to change due to these forecast uncertainties.

HFO WATCHES/WARNINGS/ADVISORIES. High Surf Advisory until 6 PM HST Wednesday for Niihau-Kauai Windward-Kauai Leeward-Waianae Coast-Oahu North Shore-Oahu Koolau-Olomana-Molokai-Maui Windward West-Maui Central Valley- Windward Haleakala.



DISCUSSION . Gibbs AVIATION . Chevalier MARINE . Houston


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
OOUH1 - 1612340 - Honolulu, HI 1 mi58 min Calm G 1.9 76°F 80°F1016 hPa (+0.8)
51211 4 mi58 min 81°F2 ft
MOKH1 - 1612480 - Mokuoloe, HI 11 mi82 min SW 1.9 G 2.9 73°F 79°F1016.3 hPa
51202 - Mokapu Point, HI (098) 14 mi58 min 80°F6 ft
51210 14 mi58 min 79°F6 ft
51212 14 mi28 min 81°F4 ft
51207 15 mi58 min 80°F6 ft
51201 - Waimea Bay, HI (106) 29 mi52 min 77°F8 ft

Wind History for Honolulu, HI
(wind in knots)    EDIT      (on/off)   Help
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
Last
24hr
NE2
--
NE1
NE2
NE1
NE2
E2
N1
N3
SE2
SW3
SW5
W1
G5
SE3
S5
G8
S5
G10
E3
G6
S4
G7
NE4
NE4
N2
G9
NE2
E2
G5
NE1
1 day
ago
N1
NE1
E1
E1
E1
NE1
NE1
NE1
E1
NW3
SW3
SW5
SW8
SW5
G9
SW6
G9
SW5
SW4
SW4
SW2
S2
E3
NE3
E2
E2
2 days
ago
--
NE1
--
--
W2
NE4
G7
NE3
G7
E3
S6
G12
S7
G11
S5
S6
G9
S1
G7
E4
G7
NE4
NE4
NE2
SE1
NE2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Daniel K Inouye International Airport, HI5 mi65 minWNW 310.00 miA Few Clouds73°F66°F79%1015.9 hPa
Oahu, Kalaeloa Airport, HI10 mi3.1 hrsN 010.00 miFair73°F68°F84%1016.5 hPa
Kaneohe, Marine Corps Air Station, HI12 mi2 hrsN 010.00 miPartly Cloudy75°F69°F82%1014.8 hPa
Wheeler Air Force Base / Oahu, HI15 mi62 minWNW 310.00 miFair65°F64°F99%1015.4 hPa

Link to 5 minute data for PHNL

Wind History from HNL (wind in knots)
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
Last 24hrNW4NW3N53CalmCalmN3N45N36S6S5SE12SE12SE12SE10SE10SE6NE6NE5NE5N3NW3
1 day agoN6N3N5N3NW4N4NW3N3NW5N4CalmS6S8S7SW8SW8SW6S5S4E5NE4N3CalmN4
2 days agoE6E6E6NE7N4NW4N5NW33N3E5SE6SE11SE12SE11SE8SE5S7NE8NE4NE3E3N3Calm

Tide / Current Tables for Honolulu, Oahu (Hawaii)
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Honolulu
Click for Map
Tue -- 03:11 AM HST     2.16 feet High Tide
Tue -- 05:33 AM HST     Moonset
Tue -- 06:58 AM HST     Sunrise
Tue -- 10:05 AM HST     0.43 feet Low Tide
Tue -- 02:35 PM HST     0.92 feet High Tide
Tue -- 05:00 PM HST     Moonrise
Tue -- 05:50 PM HST     Sunset
Tue -- 08:23 PM HST     -0.10 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
1.21.722.22.11.81.51.10.70.50.40.50.60.80.90.90.80.60.30.1-0.1-0.10.10.5

Tide / Current Tables for Waimanalo, Oahu Island, Hawaii
   EDIT      (on/off)   Help   One Week of Data
Waimanalo
Click for Map
Tue -- 01:56 AM HST     1.83 feet High Tide
Tue -- 05:32 AM HST     Moonset
Tue -- 06:57 AM HST     Sunrise
Tue -- 08:56 AM HST     0.36 feet Low Tide
Tue -- 01:20 PM HST     0.78 feet High Tide
Tue -- 04:59 PM HST     Moonrise
Tue -- 05:49 PM HST     Sunset
Tue -- 07:14 PM HST     -0.08 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
1.51.81.81.71.51.20.90.60.40.40.40.60.70.80.80.60.40.20-0.1-00.20.51

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 (4,6,7,8)
      (on/off)   Help

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

Ad by Google

Cookie Policy:
This webiste uses cookies to save your settings. No personal information is saved. 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. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. 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 numerious 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.