Friday, May24, 2019 L-36.com


Marine Weather and Tides
Nanawale Estates, HI

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:40AMSunset 6:53PM Friday May 24, 2019 4:09 PM HST (02:09 UTC) Moonrise 12:00AMMoonset 10:49AM Illumination 65% Phase: Waning Gibbous; Moon at 21 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
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PHZ122 Big Island Windward Waters- 337 Pm Hst Fri May 24 2019
Tonight..East winds 20 knots. Wind waves 6 feet. Mixed swell northwest 3 feet and south 3 feet. Isolated showers in the evening, then scattered showers after midnight.
Saturday..East winds 15 knots. Wind waves 6 feet. Mixed swell northwest 4 feet and south 3 feet. Isolated showers.
Saturday night..East winds 15 knots. Wind waves 6 feet. Mixed swell northwest 5 feet and south 3 to 4 feet. Isolated showers.
Sunday..East winds 15 knots. Wind waves 5 feet. Mixed swell northwest 5 feet and south 4 feet. Isolated showers.
Sunday night..East winds 15 knots. Wind waves 5 feet. Mixed swell northwest 4 feet and south 4 feet. Isolated showers.
Monday..East winds 15 knots. Wind waves 5 feet. Mixed swell northwest 4 feet and south 4 feet. Isolated showers.
Monday night..East winds 15 knots. Wind waves 5 feet. Mixed swell northwest 4 feet and south 3 to 4 feet. Isolated showers.
Tuesday..East winds 15 knots. Wind waves 4 to 5 feet. Mixed swell north 3 to 4 feet and south 3 feet. Isolated showers.
Wednesday..East winds 15 knots. Wind waves 4 to 5 feet. Mixed swell northwest 3 feet and south 3 feet. Isolated showers.
PHZ100 337 Pm Hst Fri May 24 2019
Synopsis for hawaiian coastal waters.. A moderate to locally fresh easterly trade wind pattern will hold through the period.


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


Area Discussion for -
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Fxhw60 phfo 250126
afdhfo
area forecast discussion
national weather service honolulu hi
326 pm hst Fri may 24 2019

Synopsis
Humid easterly trade winds will again give way to afternoon sea
breezes in some leeward areas. Showers will favor windward slopes,
though afternoon clouds and a few showers are expected over
leeward terrain this afternoon. Moderate easterly trade winds and
stable conditions will prevail this weekend and through most of
next week. Showers will mainly be confined to windward slopes.

Discussion
An easterly trade wind flow is building across the island chain
this afternoon. The islands lie under the western periphery of a
broad area of surface high pressure centered far northeast of the
state, while a slow moving and front is weakening roughly 350
miles northwest of kauai. As the front weakens, the ridge has
exerted greater influence over the state, causing easterly trade
winds to increase several mph compared to this time yesterday. A
diffuse band of low level moisture moved across the big island and
maui last night and recently fell apart over oahu. This feature
dropped less than 1 4 inch of rainfall on windward oahu around mid
day and triggered a brief period of leeward shower activity
before largely dissipating. Lingering moisture from this feature
has kept humidity up, but increasing trades are providing some
relief in spite of above normal high temps of around 90.

Easterly trade winds are expected to continue to temporarily
strengthen tonight. This will occur as the front northwest of
kauai begins to dissipate and surface high pressure to the
northeast exerts greater influence. Expect dew points to fall
a few degrees back to seasonal normal. Stable conditions will
continue, keeping modest rainfall focused over windward slopes.

Little change is in store through next week. After the initial
surge, easterly trade winds will decrease slightly as the area of
high pressure to the northeast weakens and its associated ridge
remains disrupted north of the state. In fact, the easterly winds
could be weak enough to allow another round of extensive leeward
sea breezes on memorial day and Tuesday afternoons. Models are
hinting at stronger trades building in on Wednesday or Thursday.

Overall, conditions will remain stable as a mid level ridge holds
overhead. Showers will favor windward slopes, though small pockets
of moisture will lead to periodic and brief increases in shower
activity.

Aviation
Tafs should remain mostlyVFR through Saturday. A weak band of
showery clouds will continue to dissipate as it moves westward
through kauai this evening. Winds will increase slightly through
tonight, so clouds and any showers will favor the typical windward
coasts and slopes, as well as fewer afternoon clouds over leeward
areas for the next few days.

Marine
East trade winds are expected to surge tonight, bringing in
moderate to fresh speeds across the state, with a bit more
acceleration across through the typically windier waters around
the big island and maui county. A moderate to locally fresh east
trade pattern is then expected to continue into next week.

A series of south-southwest swells will keep surf up along south
facing shores well into next week. The current south-southwest
swell will fade Saturday as forerunners from a larger south-
southwest swell will fill in. Surf from this second swell is
expected to peak around the 8-foot advisory level Sunday and
memorial day. Surf should then stay in the shoulder to head high
range into midweek along the south facing shores.

The north facing shores will see a bump in surf this weekend as a
moderate, short period northwest swell continues to fill in and
peak Saturday and hold Sunday. This will also put surf along
north facing shores in the head high range over the weekend. This
swell will gradually subside into midweek.

Along east facing shores, trade wind swell will pick up as the
trades winds increase this weekend, but will remain below advisory
levels.

Hfo watches warnings advisories
None.

Discussion... Wroe
aviation... Ts
marine... Eaton


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ILOH1 - 1617760 - Hilo, HI 21 mi40 min ESE 5.1 G 9.9 82°F 78°F1017.3 hPa
51206 22 mi54 min 78°F7 ft

Wind History for Hilo, Hilo Bay, Kuhio Bay, HI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hilo, Hilo International Airport, HI21 mi17 minE 910.00 miOvercast81°F66°F62%1017.6 hPa

Wind History from HTO (wind in knots)
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Last 24hrSE9E8SE6S3SW3S3SW3S8S43SW4CalmW4W6W7W5SW3CalmSE4E7E8E10E9E9
1 day agoSE10SE9SE7S6SE6SE5SE8SE5SE8S4S3SW64S5SW8SW5CalmS5SE8SE11E13
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2 days agoSE9SE7SE3CalmSW3CalmSW3SW4CalmW3W3SW4SW5SW4S5SW6SW6SE9E10
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Tide / Current Tables for Hilo, Hawaii Island, Hawaii
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Hilo
Click for Map
Fri -- 03:05 AM HST     0.18 feet Low Tide
Fri -- 05:41 AM HST     Sunrise
Fri -- 08:16 AM HST     0.92 feet High Tide
Fri -- 10:49 AM HST     Moonset
Fri -- 11:48 AM HST     0.42 feet Low Tide
Fri -- 06:52 PM HST     Sunset
Fri -- 07:45 PM HST     2.13 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.40.20.20.20.40.70.80.90.90.70.50.40.50.60.91.21.61.92.12.121.81.4

Tide / Current Tables for Hilo, Hilo Bay, Hawaii
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Hilo
Click for Map
Fri -- 02:39 AM HST     0.64 feet Low Tide
Fri -- 05:41 AM HST     Sunrise
Fri -- 06:33 AM HST     0.86 feet High Tide
Fri -- 10:49 AM HST     Moonset
Fri -- 12:03 PM HST     0.33 feet Low Tide
Fri -- 06:52 PM HST     Sunset
Fri -- 07:58 PM HST     2.13 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.80.70.60.70.80.80.80.80.70.50.40.30.40.60.81.21.51.92.12.12.11.91.6

Weather Map and Satellite Images
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wmap_P
GOES 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 (22,6,7,8)
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Ground Weather Radar Station South Shore, 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.