Friday, November16, 2018 L-36.com


Marine Weather and Tides
Urban Honolulu, 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 6:42AMSunset 5:50PM Friday November 16, 2018 4:17 PM HST (02:17 UTC) Moonrise 1:55PMMoonset 12:52AM Illumination 66% Phase: Waxing Gibbous; Moon at 9 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- 332 Pm Hst Fri Nov 16 2018
.small craft advisory in effect through Saturday afternoon...
Tonight..Northeast winds 20 knots. Wind waves 6 feet. North swell 9 feet. Scattered showers.
Saturday..Northeast winds to 25 knots. Wind waves 7 feet. North swell 9 feet. Scattered showers.
Saturday night..Northeast winds to 25 knots. Wind waves 8 feet. North swell 6 feet. Isolated showers.
Sunday..East winds 20 knots. Wind waves 7 feet. North swell 5 feet. Isolated showers through the day.
Sunday night..Northeast winds 20 knots. Wind waves 6 feet. North swell 4 feet. Isolated showers through the night.
Monday..Northeast winds 20 knots. Wind waves 6 feet. North swell 4 feet. Isolated showers in the morning.
Monday night..East winds to 25 knots. Wind waves 6 feet. Northwest swell 5 feet. Isolated showers through the night.
Tuesday..East winds to 25 knots. Wind waves 7 feet. Northwest swell 4 to 5 feet. Isolated showers.
Wednesday..East winds 20 knots. Wind waves 7 feet. North swell 3 to 4 feet. Isolated showers.
PHZ100 332 Pm Hst Fri Nov 16 2018
Synopsis for hawaiian coastal waters.. High pressure far north northwest of the area will produce moderate to locally strong trade winds across the area through the weekend and on into early next week. A moderate size northwest swell will be moving through the coastal waters tonight and Saturday.


7 Day Forecast for Marine Location Near Urban Honolulu, HI
   Hourly   EDIT   Help
location: 21.29, -157.88     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxhw60 phfo 170150
afdhfo
area forecast discussion
national weather service honolulu hi
350 pm hst Fri nov 16 2018

Synopsis
A weak front will move over the islands through Sunday, bringing
numerous showers to windward areas as it passes, with a few brief
downpours possible. Trade winds will strengthen overnight, and will
remain breezy through the weekend, helping to spread a few showers
to leeward areas. Showers are expected to be most active over kauai
tonight, oahu and maui county on Saturday, and on the big island
Saturday night and Sunday. While trade winds will remain breezy into
early next week, fewer windward showers are expected as the front
moves south of the islands.

Discussion
A surface high building N of the area will push a dissipating
frontal boundary over the islands from the N and ne, leading to a
period of increased windward showers, while also bringing
strengthening NE trade winds. An upper trough axis currently near
kauai will gradually slide E and weaken through Sunday, taking the
layered mid- and high-level clouds of the last couple days with it.

Afternoon soundings indicate a weak and elevated subsidence
inversion, as the upper-level trough and associated cold pool has
brought some modest instability.

Latest water vapor imagery shows that a cutoff low aloft is
developing SW of kauai, within the sharp trough axis that extends
over the islands from the ene. Visible imagery shows that the low-
levels have limited (but increasing) moisture immediately upstream
of most islands, but radar shows some heavier rain cores embedded. A
ene-wsw oriented band of broken to overcast showery low clouds lies
just N and NE of kauai, marking a weakening frontal boundary
associated with a surface low far N of the area. Stronger NE winds
and slightly cooler air lie N of the boundary, which will be moving
down the island chain through Sunday night.

Latest models indicate the boundary will be over kauai tonight,
spreading to oahu and portions of maui county on Saturday as the
high currently to the NW moves to a position N of the islands. The
boundary will spread to the big island Saturday night through Sunday
night, moving S of the big island by Monday. Although the upper
trough will progressively move E through the weekend, the mid-level
reflection (in the form of a weak closed low at 500 mb) will linger
sw of the islands. The associated mid-level cold pool and trough
will extend over the islands, bringing modest instability, and the
potential for brief bouts of winter weather on the big island
summits, mainly on Sunday.

The increasing NE winds will ensure that most rainfall will occur
along windward slopes and coasts, but the trades will spread a few
showers to leeward areas. While windward shower coverage is expected
to diminish once the boundary moves S of an island, the trades will
continue to deliver a few brief showers.

The mid-level trough will dissipate early next week as the surface
high tracks slowly E well to the N of the islands. Locally breezy
ene trade winds will deliver passing clouds and showers to windward
areas. Winds may diminish and veer to the SE by the end of the week,
and showers may increase again as another low aloft develops nearby.

Aviation
High pressure will build northwest of the state resulting in
moderate to fresh trade winds at the low levels over the next
several days. Low clouds and showers will move in with the trades
along a weakening frontal boundary this weekend, resulting in some
MVFR conditions and mountain obscurations for windward sides of the
islands. The band of clouds and showers will track west to east
tonight through the weekend. Airmet sierra is posted for tempo
mountain obscurations along windward sides of kauai and oahu this
afternoon, and may extend further eastward beginning tonight.

High level clouds cover the central and eastern portions of hawaii
this afternoon along the subtropical jet. These high clouds (fl200-
350) will gradually shift eastward as an upper level trough moves
over the islands through the weekend. Strong directional and speed
shear persists over the island chain due to the . Airmet tango
remains posted for tempo moderate turbulence in fl250-400 entire
area. The upper trough will cause some instability in the atmosphere
resulting in some enhancement in the showers.

Marine
Trade winds will continue to strengthen tonight and Saturday as high
pressure builds in far north northwest of the area. A small craft
advisory remains in effect over the typically windy waters around
maui county and the big island. These strong winds are expected to
continue into early next week. The current northwest swell is
producing seas above the 10 foot advisory threshold over exposed
waters around kauai, oahu and maui county. Thus a small craft
advisory remains in effect for those waters as well.

A high surf advisory remains in effect for shores exposed to the
northwest swell. This swell is expected to lower gradually tonight
and Saturday while swinging around to a more northerly direction.

Another small to moderate size northwest swell is expected to
gradually build on Monday, peak Monday night and early Tuesday, then
lower gradually into Wednesday. Small, mainly background south
swells are expected through the weekend and on into the middle of
next week. An uptick in short period choppy surf can be expected
along east facing shores this weekend as the trade winds strengthen.

These conditions are expected to linger in the first half of next
week.

Hfo watches warnings advisories
High surf advisory until 6 am hst Saturday for north and west facing
shores of niihau, kauai, oahu, and molokai, and for north facing
shores of maui.

Small craft advisory until 6 pm hst Sunday for maalaea bay-pailolo
channel-alenuihaha channel-big island leeward waters-big island
southeast waters.

Small craft advisory until 6 pm hst Saturday for kauai northwest
waters-kauai windward waters-kauai leeward waters-kauai channel-oahu
windward waters-kaiwi channel-maui county windward waters.

Discussion... Birchard
aviation... Foster
marine... Burke


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 1 mi36 min ENE 8.9 G 14 78°F 80°F1013.8 hPa
51211 4 mi48 min 80°F2 ft
MOKH1 - 1612480 - Mokuoloe, HI 11 mi42 min ENE 11 G 15 78°F 79°F1014.5 hPa
51212 14 mi18 min 81°F5 ft
51210 14 mi48 min 79°F7 ft
51202 - Mokapu Point, HI (098) 14 mi48 min 79°F8 ft
51207 15 mi24 min 79°F7 ft
51201 - Waimea Bay, HI (106) 29 mi36 min 77°F11 ft

Wind History for Honolulu, HI
(wind in knots)    EDIT      (on/off)   Help
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
2
PM
3
PM
4
PM
Last
24hr
NE3
G6
NE3
G6
N3
E2
G8
NE5
G10
NE3
G6
--
E1
G5
SW1
--
E2
G7
E2
NE2
NE4
NE1
NE2
NE2
N5
G8
NE7
G11
NE4
G9
NE7
G10
NE7
G12
NE4
G11
NE4
G15
1 day
ago
N3
G6
NE2
G7
NE3
G7
NE4
G8
NE3
N1
NE4
NE2
N3
NE1
N2
--
--
--
N2
N3
SW3
NE4
G9
E6
G13
E2
G8
NE4
G9
NE4
G10
E4
G9
NE6
G10
2 days
ago
E5
G10
E5
G11
NE3
SE2
NE3
--
W1
W1
NE1
NW2
N2
NE3
N1
G5
--
N4
NW2
NE1
NE3
G6
E2
G6
SE4
G10
S5
G8
S4
G10
SE3
G9
S2
G6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Daniel K Inouye International Airport, HI5 mi25 minNNE 610.00 miMostly Cloudy79°F66°F67%1014 hPa
Oahu, Kalaeloa Airport, HI10 mi25 minENE 710.00 miPartly Cloudy79°F68°F69%1015 hPa
Kaneohe, Marine Corps Air Station, HI12 mi81 minNE 910.00 miPartly Cloudy78°F72°F82%1013 hPa
Wheeler Air Force Base / Oahu, HI15 mi82 minNNE 810.00 miMostly Cloudy76°F68°F76%1013.9 hPa

Wind History from HNL (wind in knots)
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
2
PM
3
PM
4
PM
Last 24hrN6NE7CalmN4N5NE5N5NE5NE5NE8NE8NE7NE9NE6NE5NE5NE6NE9NE7NE9NE14
G20
NE11
G18
NE10NE6
1 day agoSW5NE3NE7NE5W5N5N3N3NW4NW4N3CalmN4N4NW4N5NW6NE6NE6NE8NE10NE7NE8NE5
2 days agoE11E7E7CalmCalmNW5NW3NW4NW4NW3CalmNE5N6CalmN6NW7N4E6S5S9S7S6S7S6

Tide / Current Tables for Honolulu, Honolulu Harbor, Oahu Island, Hawaii
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Hanauma Bay, Oahu Island, Hawaii
   EDIT      (on/off)   Help   One Week of Data
Hanauma Bay
Click for Map
Fri -- 12:52 AM HST     Moonset
Fri -- 03:43 AM HST     0.78 feet Low Tide
Fri -- 06:42 AM HST     Sunrise
Fri -- 10:04 AM HST     1.64 feet High Tide
Fri -- 01:54 PM HST     Moonrise
Fri -- 05:34 PM HST     0.23 feet Low Tide
Fri -- 05:48 PM HST     Sunset
Fri -- 11:49 PM HST     1.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
10.90.90.80.80.811.21.41.61.61.61.41.20.90.60.40.30.20.40.60.811.2

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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 (21,6,7,8)
      (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.