|
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 6:14AM | Sunset 5:56PM | Friday October 18, 2019 1:39 PM HST (23:39 UTC) | Moonrise 9:54PM | Moonset 10:35AM | Illumination 72% |  |
PHZ123 Big Island Leeward Waters- 932 Am Hst Fri Oct 18 2019
.small craft advisory in effect through Saturday afternoon...
Rest of today..West of the big island, winds variable less than 10 knots becoming west 10 knots in the afternoon. NEar south point, east winds to 25 knots. Wind waves 7 feet. SWell north 3 feet. Isolated showers late in the morning.
Tonight..West of the big island, northwest winds 10 knots in the evening becoming variable less than 10 knots. NEar south point, east winds to 25 knots. Wind waves 7 feet. SWell north 3 feet. Isolated showers.
Saturday..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers in the morning.
Saturday night..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 7 feet.
Sunday..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 6 feet.
Sunday night..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 5 feet. Isolated showers.
Monday..West of the big island, north winds 10 knots in the morning becoming variable less than 10 knots. NEar south point, east winds 20 knots. Wind waves 6 to 7 feet. Isolated showers.
Tuesday..West of the big island, winds variable less than 10 knots becoming north 10 knots after midnight. NEar south point, east winds 20 knots. Wind waves 6 to 7 feet. Isolated showers.
.small craft advisory in effect through Saturday afternoon...
Rest of today..West of the big island, winds variable less than 10 knots becoming west 10 knots in the afternoon. NEar south point, east winds to 25 knots. Wind waves 7 feet. SWell north 3 feet. Isolated showers late in the morning.
Tonight..West of the big island, northwest winds 10 knots in the evening becoming variable less than 10 knots. NEar south point, east winds to 25 knots. Wind waves 7 feet. SWell north 3 feet. Isolated showers.
Saturday..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers in the morning.
Saturday night..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 7 feet.
Sunday..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 6 feet.
Sunday night..Winds variable less than 10 knots west of the big island...east 20 knots near south point. Wind waves 5 feet. Isolated showers.
Monday..West of the big island, north winds 10 knots in the morning becoming variable less than 10 knots. NEar south point, east winds 20 knots. Wind waves 6 to 7 feet. Isolated showers.
Tuesday..West of the big island, winds variable less than 10 knots becoming north 10 knots after midnight. NEar south point, east winds 20 knots. Wind waves 6 to 7 feet. Isolated showers.
PHZ100 932 Am Hst Fri Oct 18 2019
Synopsis for hawaiian coastal waters.. Ridge of high pressure will weaken over the weekend as a front passes far to the north.
Synopsis for hawaiian coastal waters.. Ridge of high pressure will weaken over the weekend as a front passes far to the north.
7 Day Forecast for Marine Location Near Holualoa, HI
Hourly EDIT Helplocation: 19.65, -156 debug
Area Discussion for -
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxhw60 phfo 181945 afdhfo area forecast discussion national weather service honolulu hi 945 am hst Fri oct 18 2019 Synopsis Trade winds will continue over the islands through the weekend and into next week, periodically delivering clouds and showers to windward areas, although fewer showers are expected this weekend. Discussion To summarize, trade winds will prevail over the islands through the next week, albeit with some variations in speed, and some subtle variations in direction. The somewhat showery weather pattern of the last couple of days should trend a little drier over the weekend as a low aloft continues to distance itself from the islands. To elaborate, high pressure to the distant northeast of the islands will drift east the next couple of days, move little for a couple of days, and then drift toward the north in about 5 to 7 days from now. This will place the islands on the southwest periphery of the high's circulation, meaning that the prevailing moderate to locally breezy easterly trade winds will be occasionally weakened and somewhat veered to the east-southeast, especially on the western end of the island chain. This effect will be most pronounced when a front passes north of the islands Sunday Monday, and potentially again toward the end of next week. Water vapor imagery shows a broad trough aloft to the northwest of the islands, with early morning soundings showing an elevated subsidence inversion based between 8 and 10 thousand feet. Radar shows quite a few showers soaking windward areas, falling from open- celled showery cumulus. A trend toward fewer trade showers is expected over the weekend as the low aloft drifts away, a mid-level ridge builds nearby, and incoming pwat diminishes slightly. An increase in trade winds early next week may bring a subtle increase in windward shower coverage, but significant changes are not expected as moderate trades prevail. Long range guidance indicates the potential for much lighter winds in about a week, as the high weakens and a trough low develops north of the islands. Aviation Moderate to locally breezy trade wind flow will persist through Saturday. Ragged clouds and scattered light showers will focus mainly across windward areas, with some increase in coverage overnight. Afternoon sea breezes across leeward big island will be |
weak, but sufficient for some cumulus development and a few showers possible late this afternoon and early evening. No airmets are in effect or anticipated at this time. Brief MVFR ceilings and visibilities are possible in showers. Otherwise,VFR conditions will prevail all areas. Marine High pressure northeast of the state will maintain the fresh to strong easterly trade winds through tomorrow afternoon. The small craft advisory (sca) continues through tomorrow afternoon for the typical windier waters near maui county and the big island. As a front moves closer to the state from the north late Saturday night, winds are expected to shift to the east-southeast, particularly over the southern end of the state. The front is expected to stay north of the islands, and will likely weaken the winds over the western islands. Expecting winds to shift back to a more easterly direction Monday. Surf is expected to remain below advisory levels through the forecast period. A combination of a west-northwest and north swell will hold surf along north facing shores. The north swell is expected to fade later today. A new small long-period swell expected Saturday will help maintain the surf along exposed shores. A gale low is expected to develop near the kurils Saturday night into Sunday, and then track to the east toward the date line Sunday into Monday. This would generate a northwest swell that could reach the islands late next week. A recent storm-force low far southeast of new zealand could bring a long-period south swell that would peak over the weekend, and then fade into early next week. The fresh to locally strong trade winds will maintain rough surf along east facing shores through tomorrow. As the winds weaken Sunday, expect some improvements. Hfo watches warnings advisories Small craft advisory until 6 pm hst Saturday for maalaea bay- pailolo channel-alenuihaha channel-big island leeward waters-big island southeast waters. Discussion... Birchard aviation... Ts marine... M ballard |
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 |
| KWHH1 | 28 mi | 57 min | W 8.9 G 9.9 | 84°F | 1015.5 hPa | |||
| ILOH1 - 1617760 - Hilo, HI | 50 mi | 51 min | NE 6 G 7 | 81°F | 83°F | 1016.9 hPa | ||
| KLIH1 - 1615680 - Kahului Bay, Maui, HI | 90 mi | 57 min | NE 17 G 22 | 1016.7 hPa |
Wind History for Kawaihae, HI
(wind in knots) EDIT (on/off) Help| -12 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 | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | |
| Last 24hr | NW G7 | SW | S | SW | NW | NW | NW | W G12 | W G17 | SE G14 | E G11 | NE | E G5 | E G16 | E G17 | NE G7 | S G19 | NE G9 | NW | NW G7 | W | W | W | |
| 1 day ago | W | W | SW | SW | SW G10 | SW G11 | W | W G8 | E G11 | E G13 | NE G18 | W | SE G16 | SE G13 | E G11 | E | N | SE | N | W G8 | W G13 | W | W | W |
| 2 days ago | W | W | W | W | N G11 | NE G10 | SE G9 | W | S G10 | W | W | NE | NE | N | E | NE | NE | NE | SE | NW | NW | W | W | W |
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 |
| Kailua / Kona, Keahole Airport, HI | 0 mi | 46 min | WSW 8 | 10.00 mi | Mostly Cloudy | 83°F | 70°F | 65% | 1015.3 hPa |
Link to 5 minute data for PHKO
Wind History from HKO (wind in knots)
| 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 | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | |
| Last 24hr | NW | NW | W | N | NE | NE | Calm | SE | SE | SE | E | SE | SE | Calm | SE | SE | Calm | E | S | SW | W | SW | SW | SW |
| 1 day ago | SE G16 | SE | S G20 | SE | SE | SE | SW | SE | S | S | SE | Calm | E | SE | SE | SE | SE | E | S | S | S | SW | W | NW |
| 2 days ago | SW | S | S | N | N | E | S | SE | SE | SE | SE | SE | SE | SE | SE | SW | SW | W | SW |
Tide / Current Tables for Kailua Kona, Big Island, Hawaii
EDIT Weekend mode (on/off) (on/off) Help One Week of DataKailua Kona
Click for Map
Fri -- 06:19 AM HST Sunrise
Fri -- 06:48 AM HST 2.12 feet High Tide
Fri -- 10:34 AM HST Moonset
Fri -- 02:19 PM HST 0.59 feet Low Tide
Fri -- 05:58 PM HST Sunset
Fri -- 06:35 PM HST 0.89 feet High Tide
Fri -- 09:54 PM HST Moonrise
Fri -- 11:58 PM HST 0.36 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 06:19 AM HST Sunrise
Fri -- 06:48 AM HST 2.12 feet High Tide
Fri -- 10:34 AM HST Moonset
Fri -- 02:19 PM HST 0.59 feet Low Tide
Fri -- 05:58 PM HST Sunset
Fri -- 06:35 PM HST 0.89 feet High Tide
Fri -- 09:54 PM HST Moonrise
Fri -- 11:58 PM HST 0.36 feet Low 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 |
| 0.3 | 0.5 | 0.8 | 1.1 | 1.5 | 1.9 | 2.1 | 2.1 | 2 | 1.8 | 1.5 | 1.1 | 0.9 | 0.7 | 0.6 | 0.6 | 0.7 | 0.8 | 0.9 | 0.9 | 0.8 | 0.7 | 0.5 | 0.4 |
Tide / Current Tables for Kawaihae, Big Island, Hawaii
EDIT (on/off) Help One Week of DataKawaihae
Click for Map
Fri -- 06:19 AM HST Sunrise
Fri -- 07:00 AM HST 2.12 feet High Tide
Fri -- 10:34 AM HST Moonset
Fri -- 02:13 PM HST 0.47 feet Low Tide
Fri -- 05:57 PM HST Sunset
Fri -- 06:40 PM HST 0.84 feet High Tide
Fri -- 09:52 PM HST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 06:19 AM HST Sunrise
Fri -- 07:00 AM HST 2.12 feet High Tide
Fri -- 10:34 AM HST Moonset
Fri -- 02:13 PM HST 0.47 feet Low Tide
Fri -- 05:57 PM HST Sunset
Fri -- 06:40 PM HST 0.84 feet High Tide
Fri -- 09:52 PM HST Moonrise
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 |
| 0.1 | 0.2 | 0.5 | 0.9 | 1.4 | 1.8 | 2 | 2.1 | 2 | 1.8 | 1.5 | 1.1 | 0.8 | 0.6 | 0.5 | 0.5 | 0.6 | 0.7 | 0.8 | 0.8 | 0.8 | 0.6 | 0.4 | 0.3 |
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 (19,4,5,8)
(on/off) Help
Ground Weather Radar Station Kohala, HI
(on/off) Help
Ad by Google
|
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. |