Saturday, June23, 2018 L-36.com


Marine Weather and Tides
Puhi, HI

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:50AMSunset 7:19PM Saturday June 23, 2018 4:55 PM HST (02:55 UTC) Moonrise 3:50PMMoonset 2:49AM Illumination 82% Phase: Waxing Gibbous; Moon at 11 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
PHZ113 Kauai Channel- 346 Pm Hst Sat Jun 23 2018
Tonight..East winds 20 knots. Wind waves 8 feet. SWell southeast 3 feet. Isolated showers through the night.
Sunday..East winds 20 knots. Wind waves 8 feet. SWell southeast 3 feet. Isolated showers.
Sunday night..Northeast winds 20 knots. Wind waves 7 feet. SWell southeast 3 feet. Isolated showers.
Monday..Northeast winds 20 knots. Wind waves 7 feet. SWell southeast 3 feet. Isolated showers.
Monday night..East winds 20 knots. Wind waves 7 feet. SWell southeast 3 feet. Isolated showers through the night.
Tuesday..East winds 20 knots. Wind waves 6 feet. SWell southeast 3 feet. Isolated showers through the day.
Tuesday night..East winds 20 knots. Wind waves 6 feet. SWell southeast 3 feet. Isolated showers.
Wednesday..East winds 20 knots. Wind waves 7 feet. South swell 3 feet and southeast 3 feet. Isolated showers.
Thursday..East winds 20 knots. Wind waves 7 to 8 feet. South swell 3 feet and southeast 3 feet. Isolated showers.
PHZ100 346 Pm Hst Sat Jun 23 2018
Synopsis for hawaiian coastal waters.. High pressure over the central pacific will slowly build eastward through next week.

7 Day Forecast for Marine Location Near Puhi, HI
   Hourly   EDIT   Help
location: 21.92, -159.38     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxhw60 phfo 240140
afdhfo
area forecast discussion
national weather service honolulu hi
340 pm hst Sat jun 23 2018

Synopsis
High pressure north and northeast of the islands will support breezy
trade winds for the next week. The trades will deliver passing
clouds and showers that will primarily affect windward slopes and
coasts, with a few brief showers spreading to leeward areas of the
smaller islands. Leeward slopes of the big island will receive
afternoon and evening showers.

Discussion
A 1034 mb surface high far N of the islands will move steadily e
through Tuesday while maintaining a central pressure in the 1030's.

The high is then expected to wobble around to the distant NE of the
islands through the end of next week. The pressure gradient between
this high and a pair of weak tropical disturbances passing to the
distant S and SE of the islands will ensure seasonable breezy trade
winds remain over the islands for the foreseeable future, with some
subtle fluctuations.

A mid- to upper-level low centered about 500 miles NE of the big
island is seen drifting NW in water vapor imagery. Afternoon
soundings indicate that this feature is not significantly
destabilizing the lower atmosphere, with moisture confined to the
lowest 8 thousand feet by a strong subsidence inversion. While not
conducive for the development of heavy rain, a boundary layer this
deep can support showery cumulus. Therefore, a fairly typical high
pop low QPF trade wind regime is expected to prevail.

Model guidance depicts the mid-level low gradually weakening as it
drifts W over the next 24 to 48 hours, while the upper-level low
moves n. In response, models indicate an increase in low-level
moisture tonight, which corresponds well with an increase in showery
low clouds seen upstream of the islands. Another peak in trade wind
shower coverage may occur Monday night, when the mid-level low is
expected to weaken to a trough as it moves over the islands. Most of
the associated moisture will focus over windward slopes and coasts,
but the locally strong trade winds will push a few showers to
leeward areas on the smaller islands. Leeward slopes of the big
island will see the typical afternoon and evening clouds and showers
that tend to gradually clear overnight.

While the trade winds will keep the big island's volcanic emissions
away from the smaller islands, they will continue to stream over
portions of the puna and kau districts and adjacent near shore
waters. Additionally, eddies that develop to the lee of the big
island will occasionally lead to vog moving ashore over the kona and
kohala districts.

Aviation
Breezy, occasionally strong, trade winds will persist as a ridge of
high pressure remains north of the state, but may weaken slightly on
Sunday as the high begins to move off to the northeast of the
islands.VFR will predominate, with passing showers bringing brief
MVFR conditions to windward and mauka sections of the islands.

Airmet tango remains in effect for low level turbulence over and sw
of all islands.

Marine
Strong high pressure to the north will keep fresh to strong trade
winds blowing through the rest of the weekend, with a slight drop
off Monday. A small craft advisory remains in effect for most waters
east of oahu through Sunday due to the breezy winds. Although the
trades may slightly back off Monday, locally strong trades will
remain likely over the typical channels around maui county and south
of the big island. Surf along east facing shores will remain rough
due to the trade winds.

Surf along south facing shores is expected to trend back up next
week as overlapping long-period south swells fill in due to recent
activity across the southern pacific. The first swell is currently
building at the american samoa buoy within the 12-13 second bands
this afternoon, which should continue through the weekend as the
second source fills in. The latest wavewatch iii guidance depicts
this source peaking Monday at the samoa buoy at 7 ft 15 seconds.

Locally, surf will begin to build along south facing shores from the
first source Tuesday, then become reinforced by Thursday as the
second larger source fills in. Surf may reach the south shore
advisory level at the peak of this reinforcement by Thursday.

Looking ahead into the first week of july, the active trend could
persist along south facing shores. The latest ECMWF and GFS guidance
supports a gale-force low passing just south of the tasman sea and
new zealand Sunday through Monday with gales setting up within
hawaii's swell window.

Hfo watches warnings advisories
Small craft advisory until 6 pm hst Sunday for oahu leeward waters-
kaiwi channel-maui county windward waters-maui county leeward waters-
maalaea bay-pailolo channel-alenuihaha channel-big island leeward
waters-big island southeast waters.

Synopsis discussion... Birchard
aviation... Ts
marine... Foster


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
NWWH1 - 1611400 - Nawiliwili, HI 3 mi44 min ENE 15 G 19 79°F 82°F1017.2 hPa

Wind History for Nawiliwili, 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
NE13
G16
NE12
G16
NE10
G15
NE12
G18
NE12
G17
NE8
G12
NE11
G14
NE16
G20
NE10
G15
NE9
NE12
G16
NE16
NE16
NE13
G18
NE15
NE14
G18
NE16
G21
NE14
G18
NE13
G18
NE14
G18
NE16
G20
NE15
G19
NE14
G20
NE14
G19
1 day
ago
NE9
G13
NE9
G12
NE10
NE10
G13
NE10
G16
NE13
NE10
G13
NE10
G13
NE5
G10
E19
NE4
NE9
G13
NE9
G12
NE10
G14
NE10
G15
NE12
G16
NE13
G17
NE11
G16
NE15
G19
E14
G18
NE15
NE14
G19
NE10
G14
NE12
G15
2 days
ago
NE8
G11
E9
E8
NE7
NE6
NE6
NE5
G9
E8
G11
E8
E10
E9
NE8
E10
NE10
E11
E10
E11
G14
E11
E11
E9
NE8
G12
NE7
G13
NE10
G13
NE9
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lihue, Lihue Airport, HI4 mi63 minNE 1710.00 miPartly Cloudy83°F71°F67%1017.4 hPa
Kekaha, Pacific Missile Test Facility Barking Sands, HI24 mi60 minNW 910.00 miFair85°F68°F57%1016 hPa

Wind History from HLI (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 24hrE14
G22
NE13NE12E14NE14NE10NE13E17
G23
E15NE14NE15E18
G22
NE16NE16NE13NE15NE17NE16NE16NE14NE16NE16NE18NE17
1 day agoNE11NE11NE10NE13NE13NE12NE12NE11NE11E17NE7NE13NE13NE13NE11NE9E13NE14
G20
NE15NE13NE13NE14NE13NE14
2 days agoNE7NE8E9E7E8NE7NE7------------E10E9E8E11E11E10E9E10NE9NE11NE11

Tide / Current Tables for Hanamaulu Bay, Kauai Island, Hawaii
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Hanamaulu Bay
Click for Map
Sat -- 02:49 AM HST     Moonset
Sat -- 05:55 AM HST     Sunrise
Sat -- 06:14 AM HST     -0.16 feet Low Tide
Sat -- 01:41 PM HST     1.71 feet High Tide
Sat -- 03:49 PM HST     Moonrise
Sat -- 07:23 PM HST     Sunset
Sat -- 08:21 PM HST     0.48 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.80.70.40.2-0-0.2-0.10.10.40.81.21.51.71.71.61.31.10.80.60.50.50.60.7

Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii
   EDIT      (on/off)   Help   One Week of Data
Hanalei Bay
Click for Map
Sat -- 02:49 AM HST     Moonset
Sat -- 04:48 AM HST     -0.16 feet Low Tide
Sat -- 05:55 AM HST     Sunrise
Sat -- 12:30 PM HST     1.81 feet High Tide
Sat -- 03:50 PM HST     Moonrise
Sat -- 06:55 PM HST     0.48 feet Low Tide
Sat -- 07:25 PM HST     Sunset
Sat -- 11:33 PM HST     0.84 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.70.40.1-0.1-0.2-0.10.20.611.31.61.81.81.61.310.70.50.50.50.60.70.8

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 (22,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Kauai, 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.