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Marine Weather and Tides Hana, 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 6:04AM

Sunset 6:54PM

Sunday August 18, 2019 11:31 AM HST (21:31 UTC)

Moonrise 9:13PM

Moonset 8:41AM

Illumination 89%

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 Hana, HI

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Area Discussion for -

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Fxhw60 phfo 181951 afdhfo area forecast discussion national weather service honolulu hi 951 am hst Sun aug 18 2019 Synopsis A ridge north of the state will weaken today resulting in lighter trades through Monday. Expect the trades to build again during the second half of the week as the high pressure rebuilds north of the area. Showers riding in on the trades will favor the windward and mountain areas, especially during the nights and early mornings. Rainfall amounts are expected to be lighter than normal. Discussion No changes to the forecast this morning, and no major changes expected today. High pressure far northeast of the islands has a ridge north of the islands. The ridge will be weakening today and tomorrow, which will result in lighter trade winds across the region. Models are in good agreement with a new high building in north-northwest of the islands Tuesday and Wednesday, which will allow the trades to rebound to moderate to locally breezy levels. The high lifts northward during the second half of the week, and an old front to the northeast will could bring some additional showers in on the trade winds during the latter part of the week. The upper levels show a high building north of the islands with a weakening upper level low over the big island. The upper low will be moving to the west through midweek. A mostly stable atmosphere is expected to remain in place over the islands, with limited rainfall amounts. The trades will continue to focus shower activity over the windward sections. Aviation Elongated surface high pressure north of the hawaiian islands will help to maintain light to moderate easterly flow through this afternoon. Thus, isolated showers will mainly be limited to windward and mauka regions. Shower activity is expected to increase after Sun down along the windward slopes. MVFR conditions will be possible at times due to lowered visibility and mountain obscuration. No airmets are currently in effect. Marine Trades are forecast to weaken into the light to moderate category

later today through Monday as the gradient relaxes over the state. Guidance remains in good agreement Tuesday through the second half of the week and depicts a strengthening ridge north of the islands, which supports a return of fresh to locally strong trades (small craft advisory-level winds in the typically windier locations between maui county and the big island) by Wednesday. Surf along south facing shores will remain small through Monday, with mainly background energy continuing out of the southwest and southeast. An upward trend is anticipated beginning late Monday, as one of the largest south swells of the season begins to build across the hawaiian waters. Surface analysis charts showed a compact storm-force low bottoming out at 956 mb southeast of new zealand last Monday through Tuesday within hawaii's swell window. Ascat passes reflected this and showed a pocket of storm-force winds nosing northward through this period around the 190 deg band relative to the islands. Altimeter passes within this area showed seas ranging from 35 to 42 ft. This swell has already moved through the nearshore pacioos buoy at pago pago, which showed seas slightly higher than predicted by guidance. Energy levels within the lower frequency bands closely resembled the levels observed at this buoy for our recent july 14th warning-level event. As a result, surf heights will likely near reach warning levels along south facing shores through the peak of the event Tuesday through Tuesday night and may not drop below advisory levels until Thursday. The small westerly swell associated with recent typhoon activity in the western pacific will steadily trend down through Monday. Surf will respond and lower along the exposed coasts from this source. Surf along north and west facing shores may trend up through the second half of the week as a small northwest swell builds down the island chain. Guidance remains in good agreement and depicts a gale evolving around 2000 miles northwest of the islands near and just west of the date line early this week. Surf along east facing shores will trend up by midweek as the trades strengthen locally and upstream of the islands. Hfo watches warnings advisories None. Discussion... M ballard aviation... Kino marine... Thomas

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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	27 mi	50 min	NNE 9.9 G 16	80°F			1016.6 hPa
ILOH1 - 1617760 - Hilo, HI	87 mi	44 min	N 4.1 G 4.1	79°F	82°F		1016.5 hPa

Wind History for Kahului, Kahului Harbor, HI

(wind in knots)    EDIT      (on/off)   Help

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Last 24hr

NE15 G24

NE16 G22

NE20

N20

NE18 G22

NE18 G22

NE15 G21

NE14 G18

NE14 G18

NE11 G18

NE11 G14

NE9 G13

N10

NE9 G12

NE8 G14

NE11 G14

N6 G11

N10

N8 G11

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N9 G14

N10 G13

N12 G18

N10 G16

1 day ago

NE18

NE13 G22

NE12 G16

NE15 G22

NE18 G24

NE15 G22

NE15 G21

NE14 G20

NE14 G18

NE12 G17

NE10 G13

NE14 G20

NE8 G12

NW4

NE5 G8

N10

N12 G15

N11 G14

NE10 G14

N7 G12

N10 G13

NE11 G15

NE14 G20

NE15 G20

2 days ago

NE18 G25

NE16 G21

NE12 G18

NE17 G23

NE15 G24

NE19 G24

NE16 G22

NE14 G21

NE15 G23

NE14 G22

NE19 G25

NE16 G21

NE9 G15

NE13 G17

NE11

NE8 G11

NE16

NE3

E5 G9

SE1 G4

NE17 G23

SE3

NE14 G19

NE14 G20

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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	25 mi	98 min	NE 18	10.00 mi	A Few Clouds and Breezy	86°F	71°F	61%	1016.8 hPa

Link to 5 minute data for PHOG

Wind History from HOG (wind in knots)

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E19 G27

NE21 G29

NE19 G27

NE17 G26

NE21 G29

NE23 G31

NE17 G25

E13 G21

NE12 G18

NE13 G21

NE10

NE6

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S3

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NE16 G22

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E17 G27

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NE14 G25

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E14 G21

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2 days ago

E16 G24

NE17 G24

E18 G24

NE15 G26

NE17 G23

E16 G24

E16 G25

E14 G22

NE15 G22

NE11

NE13 G19

NE11 G17

E7

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NE5

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SW7

E7

E4

E9 G21

E5

NE13 G18

E15 G23

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Tide / Current Tables for Hana, Maui Island, Hawaii

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Tide / Current Tables for Kihei, Maui (Hawaii)

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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 (17,4,5,8)

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Ground Weather Radar Station Kohala, 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.