Sunday, June25, 2017 L-36.com


Marine Weather and Tides
East Honolulu, HI

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:50AMSunset 7:18PM Saturday June 24, 2017 10:45 PM HST (08:45 UTC) Moonrise 6:37AMMoonset 8:12PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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
    EDIT      (on/off)   Help
PHZ116 Kaiwi Channel- 901 Pm Hst Sat Jun 24 2017
Rest of tonight..East winds 15 knots. Wind waves 4 feet. South swell 3 feet early in the evening. SWell northeast 3 feet. Isolated showers.
Sunday..East winds 15 knots. Wind waves 3 feet. SWell northeast 3 feet. Isolated showers.
Sunday night..East winds 15 knots. Wind waves 4 feet. SWell northeast 3 to 4 feet. Isolated showers.
Monday..East winds 15 knots. Wind waves 5 feet. SWell northeast 4 feet. Isolated showers through the day.
Monday night..East winds 20 knots. Wind waves 6 feet. SWell northeast 4 feet. Isolated showers through the night.
Tuesday..East winds 20 knots. Wind waves 7 feet. SWell northeast 4 feet. Isolated showers through the day.
Tuesday night..East winds 20 knots. Wind waves 7 feet. SWell northeast 4 feet. Isolated showers through the night.
Wednesday..Northeast winds 20 knots. Wind waves 7 feet. SWell northeast 4 feet. Isolated showers.
Thursday..Northeast winds 20 knots. Wind waves 6 feet. SWell northeast 3 to 4 feet. Isolated showers.
PHZ100 901 Pm Hst Sat Jun 24 2017
Synopsis for hawaiian coastal waters.. Ridge of high pressure will remain north of the hawaiian waters through the week.

7 Day Forecast for Marine Location Near East Honolulu, HI
   Hourly   EDIT   Help
location: 21.28, -157.7     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxhw60 phfo 250627
afdhfo
area forecast discussion
national weather service honolulu hi
827 pm hst Sat jun 24 2017

Synopsis
A mid level trough passing over the islands this weekend,
will weaken the trade winds and result in an increase in leeward
shower activity. The mid-level trough will shift west of the
state by early next week, with high pressure then building back
northeast of the islands. This will result in a drier and more
stable trade wind shower regime, with the trades increasing into
the breezy to locally windy range through much of next week. A
more showery trade wind pattern will return late in the work week
and next weekend, as an upper level low approaches the islands
from the east.

Discussion
Currently at the surface, a 1034 mb high centered around 1600
miles north of honolulu, is driving light to moderate trade winds
across the island chain this evening. Meanwhile aloft, a mid-level
700 mb trough is enhancing some of shower activity over the
western islands this evening. Infrared satellite imagery shows
partly to mostly cloudy skies in place across the state, with
radar imagery showing scattered windward showers and some
lingering shower activity over leeward areas as well. Main short
term concern revolves around rain chances.

Tonight and Sunday,
high pressure will track slowly eastward well to the north of the
islands, maintaining a light to moderate trade wind flow across
the state. Localized sea breezes will likely develop again Sunday
afternoon in the more sheltered leeward areas due to the weakened
trade wind flow. Meanwhile aloft, the weak mid-level trough will
shift westward, reaching kauai Sunday afternoon. As for sensible
weather details, showers will continue to favor windward and
mauka areas through the period as the trades continue to blow
across the island chain. In leeward areas, showers should end
over the next couple hours as daytime heating is lost, with
showers redeveloping again Sunday afternoon in the weakened trade
wind regime. There could be a few enhanced showers develop Sunday
afternoon, particularly over kauai in association with the mid-
level trough moving overhead.

Sunday night through Thursday,
the mid-level trough will exit to the west of the state, while
surface high pressure builds to the northeast of the island chain.

This will increase the pressure gradient across the islands,
resulting in strengthening trade winds Sunday night and Monday,
with breezy to locally windy conditions expected Tuesday through
the end of the upcoming work week. In addition to the
strengthening trades, with the exit of the mid-level trough to the
west of the islands, a drier more stable airmass will move into
the area. Precipitable water values will drop into the 1.0 to 1.2
inch range, below normal for this time of year, and this will
result in a drier than normal trade wind shower pattern. Showers
will continue to favor windward and mauka areas, with a stray
shower reaching leeward areas from time to time due to the
strengthening trades. Rainfall amounts are expected to remain
light through the period.

Thursday night through next Saturday,
both the GFS and ECMWF are in good agreement showing an upper
level low tracking eastward toward the islands Thursday night and
Friday, then lifting northward and away from the islands for the
first half of next weekend. High pressure will continue to hold in
place north of the islands through the period, with breezy trade
winds expected to continue through at least Thursday night. The
trades are then expected to weaken Friday through Saturday as the
gradient slackens due to the approaching upper level trough. As
for sensible weather details, both models show deep layer moisture
increasing beginning Thursday night, with this enhanced moisture
remaining over the islands through next Saturday. As a result, we
should see a more showery trade wind pattern through the period,
with showers continuing to favor windward and mauka locales.

Aviation
Light to moderate northeast to east trade winds will continue
through Sunday. Expect onshore sea breezes to develop mainly along
western slopes of all islands with cloud ceilings building over
mountain areas after 20z. Tempo showers and isolated MVFR
conditions are forecast.

No airmet's in effect or anticipated over the next 24 hours.

Marine
Light to moderate trade winds associated with 1034 mb high
pressure far north of the state will continue through the rest of
the weekend. Fresh to strong trades are expected to return through
the day Monday and continue through the week as the gradient
tightens over the region. Small craft conditions will be likely
through this period over the typically windier channel waters,
maalaea bay and south of the big island.

Surf along east facing shores will build and become rough late
Sunday through next week due to a combination of increasing trades
and a moderate northeast swell associated with a recent batch of
gales off the west coast. Surf will approach advisory levels along
east facing shores through this time, especially Monday through
Tuesday as the northeast swell peaks.

Although surf along south facing shores will trend down toward
average going into the upcoming week, small long-period reinforcing
pulses from the southern pacific will keep things from going flat. A
blocking pattern has become established east of new zealand, which
is leading to fetch regions associated with passing storms
setting up farther east than normal or more toward french
polynesia. Another pulse from this region out of the south-
southeast is forecast to fill in Wednesday across the local waters
and bring the surf back up a notch going into the second half of
the week. For the long range, nothing significant is anticipated
at this time as model guidance continues to support this blocking
pattern holding down south.

Up north, mainly wrap into the typically exposed locations from the
northeast swell Monday through Tuesday and the increasing trades
will be expected for surf. Otherwise, nothing significant is
anticipated through the week.

Extreme tides that have been observed over the past several days
will trend back toward normal into the upcoming week. As a result,
flooding impacts along the coast will diminish.

Hfo watches warnings advisories
None.

Discussion... Jelsema
aviation... Bohlin
marine... Gibbs


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OOUH1 - 1612340 - Honolulu, HI 9 mi46 min ENE 4.1 G 6 78°F 80°F1017.9 hPa (+1.7)
51202 - Mokapu Point, HI (098) 9 mi42 min 80°F5 ft
MOKH1 - 1612480 - Mokuoloe, HI 12 mi70 min E 6 G 8.9 79°F 83°F1017.4 hPa
51211 14 mi46 min 80°F3 ft
51210 14 mi46 min 80°F4 ft
51207 14 mi51 min 80°F4 ft
51201 - Waimea Bay, HI (106) 35 mi44 min 78°F4 ft

Wind History for Honolulu, HI
(wind in knots)    EDIT      (on/off)   Help
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
NE3
G6
NE3
G6
NE2
G5
N2
NE1
G4
--
E1
S1
W2
NW3
SE4
NE6
G10
E4
G10
E5
G9
E5
G9
NE7
G11
E4
G15
NE6
G10
NE7
G16
SE7
G13
E3
G10
E3
G7
E2
G5
NE4
1 day
ago
SE3
NE4
G8
E4
G7
SE5
G10
NE3
NE2
N2
NE3
NW2
N1
NE3
G6
W3
SE4
G8
NE10
G15
NE12
G16
E3
G14
E5
G11
E5
G11
E5
G12
E7
G13
NE5
G10
NE4
G7
NE2
NE3
2 days
ago
--
S3
W3
NE4
G10
NE8
G13
NE10
G15
NE6
G10
NE5
G11
N8
G14
NE3
G9
NE5
G12
NE8
G12
E3
G11
W1
G6
NE5
NE3
G8
E2
G5
NE2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kaneohe, Marine Corps Air Station, HI12 mi49 minENE 77.00 miMostly Cloudy80°F70°F71%1016.1 hPa
Honolulu, Honolulu International Airport, HI13 mi53 minE 810.00 miA Few Clouds78°F66°F67%1017.1 hPa
Oahu, Kalaeloa Airport, HI20 mi53 minNE 310.00 miFair77°F64°F66%1018.2 hPa
Wheeler Air Force Base / Oahu, HI22 mi1.8 hrsN 010.00 miMostly Cloudy74°F67°F80%1015.8 hPa

Wind History from HNG (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 24hrE84E4634E4E4E5E4NE65NE9NE10--NE7NE9--NE9NE4E5E7E6E7
1 day agoNE8E7NE8E5E5E9E7E8E6E7NE6NE8E11NE10NE12NE9NE10NE9NE8NE73E8NE7NE7
2 days agoE6
G15
--E7--E6NE7--E7E6E6NE7NE9
G14
NE9NE10NE9NE10NE7NE10NE10NE8NE9
G15
NE8
G16
NE12
G19
NE3

Tide / Current Tables for Hanauma Bay, Oahu Island, Hawaii
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Hanauma Bay
Click for Map
Sun -- 03:59 AM HST     0.68 feet High Tide
Sun -- 05:50 AM HST     Sunrise
Sun -- 07:40 AM HST     Moonrise
Sun -- 09:31 AM HST     -0.22 feet Low Tide
Sun -- 04:41 PM HST     2.41 feet High Tide
Sun -- 07:16 PM HST     Sunset
Sun -- 09:08 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
00.20.40.60.70.60.40.2-0-0.2-0.200.411.522.32.42.21.81.40.80.40.1

Tide / Current Tables for Honolulu, Honolulu Harbor, Oahu Island, Hawaii
   EDIT      (on/off)   Help   One Week of Data
Honolulu
Click for Map
Sun -- 12:05 AM HST     -0.03 feet Low Tide
Sun -- 04:53 AM HST     0.72 feet High Tide
Sun -- 05:51 AM HST     Sunrise
Sun -- 07:41 AM HST     Moonrise
Sun -- 10:15 AM HST     -0.28 feet Low Tide
Sun -- 05:38 PM HST     2.49 feet High Tide
Sun -- 07:17 PM HST     Sunset
Sun -- 09:09 PM HST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-000.20.50.70.70.60.40.1-0.1-0.3-0.200.51.11.72.12.42.52.31.81.30.80.3

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_P
IR Satellite Image from GEOS
cpac_satellite

GOES Local Image of Hawaii    EDIT
Geos

Wind Forecast for (4,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Molokai, HI
   (on/off)   Help
weather_mapweather_map weather_map

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.