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Marine Weather and Tides Olowalu, HI Version 3.4

NOTICE 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

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Sunrise 6:06AM

Sunset 6:49PM

Sunday August 25, 2019 11:20 PM HST (09:20 UTC)

Moonrise 1:16AM

Moonset 2:55PM

Illumination 18%

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.

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7 Day Forecast for Marine Location Near Olowalu, HI

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Area Discussion for -

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Fxhw60 phfo 260644 afdhfo area forecast discussion national weather service honolulu hi 830 pm hst Sun aug 25 2019 Synopsis High pressure far north of the area will continue to bring moderate to locally breezy trade winds to the islands through Monday. Winds will slowly ease Tuesday through Friday as an area of low pressure develops far north of the area. Local land and sea breezes are expected to develop across some areas under this lighter trade wind regime. A new high is expected to build far north northwest of the area next weekend with an uptick in trade winds possible. Clouds and passing showers will tend to favor windward and mauka areas, while afternoon clouds and showers are possible over the leeward big island slopes. Discussion Moderate to locally breezy trade winds prevail across the islands as high pressure remains far north through Monday. A rather stable airmass continues across the area as a mid level ridge persists in the island vicinity. Thus the islands will see mainly light showers under a stable airmass. Latest satellite imagery showed a batch of low clouds has reached windward maui, molokai and big island. Much of this moisture will spread west as the night progresses. Expect an uptick in clouds and showers along windward areas of oahu and kauai through rest of the evening into early Monday morning. As the same synoptic weather features will persist on Monday, another somewhat brisk trade wind weather day is expected for the islands, with passing low clouds and mainly light showers affecting windward and mountain areas. Afternoon and evening clouds and showers are also expected over the leeward big island slopes. Trade winds are still expected to ease slowly Tuesday through early part of the next weekend, as the high is forecast to weaken and move off to the northeast while an area of low pressure develops far to our north. In fact, wind speeds are expected to decrease enough to allow localized land and sea breezes to be more widespread during the night and day. Meanwhile, model solutions do not hint much increase in moisture as well as airmass instability. Therefore, shower activity will be highly dependent on the available passing moisture and primarily focused over windward and mauka area. Daytime heating may allow for afternoon clouds and showers developing over the interior areas of all islands as well as over the leeward big island slopes. A new high is forecast to begin building far our north-northwest of the area while low pressure to the far north moves off to the northeast over the next weekend. This should allow for the

strengthening of trade wind speeds across the area. Furthermore, long range model solutions also hinted a broad area of moisture from the east passing the area over the weekend. There are some differences in the timing on when this will occur, with ECMWF has it slightly faster while latest GFS is slower. Looks like the islands may see an uptick in clouds and showers as well. Aviation A high pressure ridge north of the state will keep moderate to breezy trade winds in the forecast through Monday. Wind speeds will remain strong enough for low level turbulence down wind of all mountains. Upstream cloud bands will produce periods of MVFR ceilings with scattered showers along some north and east facing island slopes tonight. Airmet tango remains in effect for tempo moderate turbulence south through west of all islands. This airmet tango will likely continue through Monday. Marine Fresh to strong easterly trade winds will continue tonight as high pressure remains far north of the state. The small craft advisory (sca) has been extended through tonight for the maui county windward and kaiwi channel waters and through Monday afternoon for the typically windy waters around the big island and maui. Trades will gradually decrease through the first half of the week as the high weakens and drifts northeast, with advisory level winds scaling back to only the usual windy areas Monday afternoon, and then drop completely by Tuesday. South shore surf will remain around the summer background level for the next couple of days as a southwest swell out of the tasman sea arrives Tuesday, peaks Wednesday and Thursday, then declines into next weekend. Though hawaii is largely blocked by swells from this direction,some slightly higher, but inconsistent, sets are possible during the peak. East shore surf will gradually decline through the week. North shore surf will remain small. Hfo watches warnings advisories Small craft advisory until 6 pm hst Monday for maalaea bay- pailolo channel-alenuihaha channel-big island leeward waters-big island southeast waters. Small craft advisory until 6 am hst Monday for kaiwi channel- maui county windward waters. Discussion... Hui aviation... Bohlin marine... Powell

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
KLIH1 - 1615680 - Kahului Bay, Maui, HI	14 mi	57 min	NE 8.9 G 13	78°F			1015.7 hPa
51213	19 mi	51 min			84°F	3 ft
51202 - Mokapu Point, HI (098)	72 mi	51 min			82°F	7 ft

Wind History for Kahului, Kahului Harbor, HI

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NE15 G19

NE15 G21

NE17 G21

NE12 G15

NE14 G18

NE10 G16

NE13 G16

NE8 G14

NE9 G16

NE12 G21

NE11 G18

NE9 G21

NE12 G24

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NE11 G29

NE14 G26

NE20 G30

NE25 G31

NE19 G26

NE21

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NE13 G18

NE15 G27

NE11 G16

1 day ago

NE13 G23

NE13 G18

NE5 G8

NE7 G14

NE6

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NE17 G22

NE2 G5

NE16 G23

NE15 G21

NE19 G24

NE15 G23

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NE14 G22

NE20 G25

NE20 G27

NE19 G25

NE17 G28

NE20 G29

NE18 G24

NE15 G25

NE17 G22

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NE15 G22

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N10 G13

N5 G11

N10 G13

N9 G12

N14 G17

N12 G15

N13 G16

N12 G16

N14

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NE18 G24

NE17 G26

NE15 G21

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NE13 G19

NE13 G20

NE15 G19

NE12 G18

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Kahului, Kahului Airport, HI	15 mi	2.4 hrs	NE 12	7.00 mi	Light Rain	78°F	70°F	76%	1015.9 hPa
Lanai City, Lanai Airport, HI	17 mi	2.4 hrs	NNE 14 G 21	10.00 mi	Fair	74°F	72°F	94%	1015.1 hPa

Link to 5 minute data for PHOG

Wind History from HOG (wind in knots)

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NE14

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NE22 G30

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NE24 G34

NE19 G36

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NE12

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E12 G19

E15 G25

NE12 G18

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NE12

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NE14 G20

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NE19 G30

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E15 G24

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E13 G23

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Tide / Current Tables for Lahaina, Maui Island, Hawaii

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Tide / Current Tables for Kihei, Maui (Hawaii) (2)

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Weather Map and Satellite Images

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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

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Wind Forecast for (5,6,7,8)

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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.