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Marine Weather and Tides
Version 3.4 |
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 6:27AM | Sunset 6:04PM | Sunday October 20, 2019 10:16 PM HST (08:16 UTC) | Moonrise 11:51PM | Moonset 12:38PM | Illumination 48% |  |
PHZ116 Kaiwi Channel- 930 Pm Hst Sun Oct 20 2019
Rest of tonight..East winds 15 knots. Wind waves 6 feet. North swell 3 feet. Scattered showers.
Monday..East winds 20 knots. Wind waves 5 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Monday night..East winds 20 knots. Wind waves 6 feet. Isolated showers.
Tuesday..East winds 20 knots. Wind waves 7 feet. Isolated showers through the day.
Tuesday night..East winds 20 knots. Wind waves 7 feet. Northwest swell 3 feet. Isolated showers.
Wednesday..East winds 15 knots. Wind waves 7 feet. Northwest swell 3 feet. Isolated showers.
Wednesday night..East winds 15 knots. Wind waves 6 feet. Northwest swell 3 feet. Isolated showers.
Thursday..East winds 15 knots. Wind waves 5 feet. Northwest swell 3 to 4 feet. Isolated showers.
Friday..East winds 15 knots. Wind waves 4 to 5 feet. North swell 4 to 5 feet. Isolated showers.
Rest of tonight..East winds 15 knots. Wind waves 6 feet. North swell 3 feet. Scattered showers.
Monday..East winds 20 knots. Wind waves 5 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Monday night..East winds 20 knots. Wind waves 6 feet. Isolated showers.
Tuesday..East winds 20 knots. Wind waves 7 feet. Isolated showers through the day.
Tuesday night..East winds 20 knots. Wind waves 7 feet. Northwest swell 3 feet. Isolated showers.
Wednesday..East winds 15 knots. Wind waves 7 feet. Northwest swell 3 feet. Isolated showers.
Wednesday night..East winds 15 knots. Wind waves 6 feet. Northwest swell 3 feet. Isolated showers.
Thursday..East winds 15 knots. Wind waves 5 feet. Northwest swell 3 to 4 feet. Isolated showers.
Friday..East winds 15 knots. Wind waves 4 to 5 feet. North swell 4 to 5 feet. Isolated showers.
PHZ100 930 Pm Hst Sun Oct 20 2019
Synopsis for hawaiian coastal waters.. A ridge of high pressure north of the area will lift north and strengthen over the next few days. The ridge is expected to weaken during the second half of the week as a front passes to the north.
Synopsis for hawaiian coastal waters.. A ridge of high pressure north of the area will lift north and strengthen over the next few days. The ridge is expected to weaken during the second half of the week as a front passes to the north.
7 Day Forecast for Marine Location Near Urban Honolulu, HI
Hourly EDIT Helplocation: 21.29, -157.88 debug
Area Discussion for -
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxhw60 phfo 210648 afdhfo area forecast discussion national weather service honolulu hi 848 pm hst Sun oct 20 2019 Synopsis Light winds are expected through tonight as high pressure lingers far to our northeast. Showers will continue to favor windward and mauka areas. Moderate trades are expected to return on Monday and linger through Thursday with passing showers focused over windward and mauka areas, especially during the night and early morning hours. Trade winds will become lighter as we head into next weekend due to a front developing to our north. Discussion Have decreased pops overnight for the western end of the state, based on the latest satellite and radar data. Satellite derived precipitable (pw) continues to show the highest values to the southwest outside the coastal waters, and the values over kauai and oahu and surrounding waters should be on the decline overnight. The general forecast philosophy remains the same for the forecast period. Satellite derived pw shows some increased moisture east of the big island that could be moving in there by tomorrow afternoon. Pw values are around 1.6 inches which is near normal for october, so just looking for an increase in some of the trade wind showers mostly over the windward side of the island. The front to the far north is weakening as it continues to move to the east tonight. By Monday morning, we expect the ridge to the north to lift northward, which will allow winds to become more easterly across the state. This will also allow wind speeds to rebound back to more moderate levels into the middle of the week. Expect passing trade showers through Thursday focused over the typical windward and mauka areas. Heading into the next weekend, another front to the north of the islands will once again turn the winds to the southeast. The latest global model runs are showing an uptick in pw coming in over the islands from the southeast during this time. Will have to watch future model runs to see how much pw will make it into the |
islands and when, to determine any such impact. Aviation Trade winds will re-strengthen as we head into Monday, which will focus most of the clouds and shower activity on the windward side of the islands for the next few days. Brief MVFR conditions are possible in passing showers, butVFR conditions are expected to prevail, with no airmets expected through Monday. Marine Since the most current winds remain at borderline small craft advisory (sca) speeds, the SCA continues through Monday afternoon. A front will stall well north of the islands and dissipate Monday, which will result in the nearby ridge moving north and strengthening. This will boost winds slightly across the area and will likely lead to an expansion of the SCA to include other typically windy zones by Tuesday. Another front approaching late in the week may once again lead to diminishing winds. Small background northwest swells will persist over the next several days along north facing shores. Further out, the latest model guidance is indicating surf rising late Wednesday through Thursday and peaking Friday along north facing shores. There are still some uncertainties with the swell heights as the swell makes it to local shores. However, with the typical low bias of these models, the isles may see surf heights near high surf advisory levels along north and west facing shores later this week. Trade winds will push short-period wind waves onto east facing shores for at least the next couple of days, trending down later in the week. Surf along south facing shores will remain small through the week with mainly background swells out of the sw, s, and se. Hfo watches warnings advisories Small craft advisory until 6 pm hst Monday for alenuihaha channel-big island leeward waters-big island southeast waters. Discussion... M ballard aviation... Ts marine... Kinel |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| OOUH1 - 1612340 - Honolulu, HI | 1 mi | 53 min | ENE 2.9 G 7 | 81°F | 83°F | 1016.6 hPa | ||
| 51211 | 4 mi | 47 min | 82°F | 3 ft | ||||
| MOKH1 - 1612480 - Mokuoloe, HI | 11 mi | 41 min | E 4.1 G 8.9 | 80°F | 82°F | 1017 hPa | ||
| 51202 - Mokapu Point, HI (098) | 14 mi | 47 min | 81°F | 6 ft | ||||
| 51210 | 14 mi | 47 min | 80°F | 5 ft | ||||
| 51212 | 14 mi | 47 min | 83°F | 4 ft | ||||
| 51207 | 15 mi | 47 min | 81°F | 5 ft | ||||
| 51201 - Waimea Bay, HI (106) | 29 mi | 41 min | 78°F | 4 ft |
Wind History for Honolulu, HI
(wind in knots) EDIT (on/off) Help| 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 | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | |
| Last 24hr | N | N | NE | E | E | NE | NE | E | NE | NE | NE | S | W | NW G7 | N G8 | NE G9 | E | N G9 | NE G10 | NE G11 | NE G9 | SE G6 | NE | NE |
| 1 day ago | E G6 | NE G9 | NE G8 | E G9 | NE | NE | E | NE G6 | E G6 | E G8 | NE G12 | NE G12 | NE G15 | NE G12 | E G13 | E G12 | NE G9 | NE G7 | NE G9 | NE G10 | NE | E | NE | NW |
| 2 days ago | NE G5 | NE G10 | E G10 | NE G11 | SE G12 | NE G14 | NE G15 | NE G18 | NE G15 | E G15 | E G13 | NE G13 | NE G13 | NE G9 | E G6 | E | E G8 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Daniel K Inouye International Airport, HI | 5 mi | 24 min | NE 11 | 10.00 mi | A Few Clouds | 81°F | 69°F | 67% | 1016.4 hPa |
| Oahu, Kalaeloa Airport, HI | 10 mi | 4.9 hrs | WNW 7 | 10.00 mi | Overcast | 83°F | 75°F | 77% | 1014.9 hPa |
| Kaneohe, Marine Corps Air Station, HI | 12 mi | 45 min | E 7 | 10.00 mi | Mostly Cloudy | 81°F | 71°F | 72% | 1016.3 hPa |
| Wheeler Air Force Base / Oahu, HI | 15 mi | 21 min | N 0 | 10.00 mi | Mostly Cloudy | 73°F | 70°F | 93% | 1016.1 hPa |
Link to 5 minute data for PHNL
Wind History from HNL (wind in knots)
| 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 | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
| Last 24hr | NW | NW | N | NE | NE | Calm | N | N | N | NE | E | SE | NE | NE | NE | N | NE | NE | NE | NE | NE | NE | ||
| 1 day ago | E | E | E | E | E | E | NE | NE | E | NE | NE | E | NE | NE G18 | E G18 | NE | E | NE | E | E | E | Calm | N | NW |
| 2 days ago | E | NE | NE | NE | N | NE | N | NE | NE | NE | NE | NE G23 | NE | NE G23 | E G22 | E G24 | NE G21 | E G21 | NE | NE | E | E | E |
Tide / Current Tables for Honolulu, Honolulu Harbor, Oahu Island, Hawaii
EDIT Weekend mode (on/off) (on/off) Help One Week of DataTide / Current data from XTide NOT FOR NAVIGATION
Tide / Current Tables for Hanauma Bay, Oahu Island, Hawaii
EDIT (on/off) Help One Week of DataHanauma Bay
Click for Map
Mon -- 01:48 AM HST 0.53 feet Low Tide
Mon -- 02:41 AM HST Last Quarter
Mon -- 06:28 AM HST Sunrise
Mon -- 09:31 AM HST 2.04 feet High Tide
Mon -- 01:31 PM HST Moonset
Mon -- 05:32 PM HST 0.32 feet Low Tide
Mon -- 06:01 PM HST Sunset
Mon -- 10:48 PM HST 0.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:48 AM HST 0.53 feet Low Tide
Mon -- 02:41 AM HST Last Quarter
Mon -- 06:28 AM HST Sunrise
Mon -- 09:31 AM HST 2.04 feet High Tide
Mon -- 01:31 PM HST Moonset
Mon -- 05:32 PM HST 0.32 feet Low Tide
Mon -- 06:01 PM HST Sunset
Mon -- 10:48 PM HST 0.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 |
| 0.6 | 0.5 | 0.5 | 0.6 | 0.8 | 1 | 1.3 | 1.6 | 1.9 | 2 | 2 | 1.9 | 1.6 | 1.3 | 1 | 0.7 | 0.5 | 0.3 | 0.3 | 0.4 | 0.6 | 0.7 | 0.8 | 0.9 |
Weather Map
(on/off) Help Weather Map
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)
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Ground Weather Radar Station Molokai, HI
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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. |