Thursday, July29, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Princeville, HI

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:03AMSunset 7:14PM Thursday July 29, 2021 3:32 PM HST (01:32 UTC) Moonrise 11:32PMMoonset 11:27AM Illumination 68% Phase: Waning Gibbous; Moon at 20 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
PHZ111 Kauai Windward Waters- 941 Am Hst Thu Jul 29 2021
Today..East winds 15 knots. Wind waves 5 feet. Scattered showers in the morning, then isolated showers in the afternoon.
Tonight..East winds 20 knots. Wind waves 5 feet. Isolated showers in the evening, then scattered showers after midnight.
Friday..East winds 20 knots. Wind waves 5 feet. Scattered showers in the morning.
Friday night..East winds 15 knots. Wind waves 5 feet. Isolated showers through the night.
Saturday..East winds 15 knots. Wind waves 5 feet. Isolated showers in the morning.
Saturday night..East winds 20 knots. Wind waves 6 feet. Isolated showers through the night.
Sunday..East winds 20 knots. Wind waves 6 to 7 feet. Isolated showers.
Monday..East winds 20 knots. Wind waves 6 to 7 feet. Scattered showers.
PHZ100 941 Am Hst Thu Jul 29 2021
Synopsis for hawaiian coastal waters.. High pressure far north of the state will continue to produce fresh to strong trade winds into early next week.


7 Day Forecast for Marine Location Near Princeville, HI
   Hourly   EDIT   Help
location: 22.22, -159.48     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXHW60 PHFO 300128 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 328 PM HST Thu Jul 29 2021

SYNOPSIS.

Breezy trades will focus clouds and showers over windward and mauka areas through the forecast period. A drying trend featuring limited shower coverage and intensity is forecast this weekend into next week.

DISCUSSION.

Precipitable water values generally range from around 1.6 to 1.9 inches across the state, solidly above normal values for the date which check in just shy of 1.40". The shallow trade inversion has nonetheless rendered the bulk of this moisture, which resides in the 6-20kft layer, inaccessible to the boundary layer. Conditions therefore remain relatively dry and clouds rather thin even along windward slopes this afternoon. Leeward Big Island represents the lone exception due to diurnal heating upslope. A couple of heavy showers developed as a result, but this activity will dissipate with the onset of nocturnal stabilization later this evening.

Mid-level heights will steadily rise through the end of the week as the height field rebounds from the departing upper trough. By Sunday, longwave ridge amplification will develop over the central and north-central Pacific at Hawaii's approximate longitude. This ridge will be anchored by a closed mid-level high characterized by 500mb heights as high as 595dm centered over northern portions of the state. As surface high pressure over the eastern Pacific strengthens in response, this will place the Hawaiian Islands firmly downstream of the strongest subsidence. As a result, breezy trades will likely undergo further strengthening while persistent dry advection from the east maintains a strong degree of stability. This is expected to translate to a dry trades pattern characterized by limited showers over windward slopes during the day and a greater coverage of light showers at night and in the early mornings.

AVIATION.

Surface high pressure to the north of the islands will maintain a moderate to locally strong trade wind flow into tomorrow. AIRMET Tango remains in effect for low level mechanical turbulence to the lee of the mountains on all islands. Anticipating this AIRMET to remain in place over the next several days. Expect clouds and showers to remain focused over windward and mountain areas in the trade wind flow. Brief MVFR conditions are possible, but not anticipating any significant mountain obscuration.

MARINE.

High pressure far north of the state will slowly drift eastward and build from Friday into the weekend. Trade winds will begin to gradually strengthen tonight through the weekend. Widespread strong trades are expected over the Hawaiian waters by Sunday. The Small Craft Advisory has been expanded and extended through the weekend. This SCA will likely need to be expanded in coverage sometime over the weekend as the trades increase further.

Surf along east facing shores will remain small through Friday, then trend up over the weekend in response to strengthening trades locally and upstream of the Hawaiian Islands.

Southerly swell activity will remain rather low for this time of the year with just background swells expected from the south and southeast. Nearly flat conditions will continue for north and west facing shores into early next week.

HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 PM HST Sunday for Oahu Leeward Waters-Kaiwi Channel-Maui County Windward Waters-Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . JVC AVIATION . M Ballard MARINE . Kino


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
51208 7 mi37 min 80°F5 ft
NWWH1 - 1611400 - Nawiliwili, HI 20 mi45 min NE 11 G 14 80°F 1017.6 hPa
51WH0 - WHOTS - Woods Hole Ocean Time-series 80 mi63 min 79°F1017.1 hPa
51201 - Waimea Bay, HI (106) 82 mi36 min 80°F4 ft

Wind History for Nawiliwili, HI
(wind in knots)    EDIT      (on/off)   Help
4
PM
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
Last
24hr
NE11
G15
NE9
G14
NE11
G14
E13
NE14
NE12
G17
NE13
G17
NE11
G16
NE11
G14
NE8
G11
NE6
G10
NE9
G14
NE9
G13
NE6
NE9
G12
NE9
G12
NE12
G15
NE11
G16
NE12
G15
NE11
G17
NE11
G17
NE11
G14
NE13
G18
NE10
G14
1 day
ago
NE11
G16
NE11
G15
NE9
NE10
G14
NE9
G12
NE9
G14
NE10
G14
NE10
G13
NE9
G12
NE10
NE7
G11
NE8
NE9
G12
N6
W2
NW2
NW2
NE8
NE6
G11
NE9
NE9
G12
NE9
G13
NE11
G14
NE11
G14
2 days
ago
NE13
G16
NE11
G16
NE11
G14
NE9
G13
NE11
G16
NE9
G15
NE11
G14
NE10
G13
NE9
G14
NE9
G16
NE11
G14
NE9
G12
NE10
NE10
G13
NE8
G11
NE8
G12
NE9
G13
NE12
NE11
G15
NE10
G14
NE12
G15
NE11
G14
NE12
G15
NE13

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lihue, Lihue Airport, HI18 mi40 minNE 1210.00 miMostly Cloudy85°F72°F65%1017.3 hPa
Kekaha, Pacific Missile Test Facility Barking Sands, HI19 mi42 minWSW 810.00 miFair86°F69°F57%1016.1 hPa

Link to 5 minute data for PHLI

Wind History from HLI (wind in knots)
4
PM
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
Last 24hrNE13NE10NE11E12E14E14E13E12E13NE11NE11NE13NE11NE10NE10NE15NE13NE14NE13NE14NE12NE12NE14NE12
1 day agoNE13NE14NE11NE11NE13NE12NE13NE13NE12NE12NE13NE10E11NE9NE9N8NE6NE9NE8NE8NE10NE11NE11NE12
2 days agoNE12NE13NE13NE12NE15NE14NE12NE14NE14NE12NE14NE10NE11NE14NE9NE12NE10NE12NE13NE13NE12NE12E12NE11

Tide / Current Tables for Hanalei Bay, Kauai Island, Hawaii
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Hanalei Bay
Click for Map
Thu -- 12:39 AM HST     0.21 feet Low Tide
Thu -- 06:09 AM HST     Sunrise
Thu -- 07:28 AM HST     1.19 feet High Tide
Thu -- 11:26 AM HST     Moonset
Thu -- 12:11 PM HST     0.76 feet Low Tide
Thu -- 06:28 PM HST     1.44 feet High Tide
Thu -- 07:19 PM HST     Sunset
Thu -- 11:31 PM HST     Moonrise
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
0.20.20.30.50.70.91.11.21.21.10.90.80.80.80.911.21.31.41.41.31.10.80.5

Tide / Current Tables for Hanamaulu Bay, Kauai Island, Hawaii
   EDIT      (on/off)   Help   One Week of Data
Hanamaulu Bay
Click for Map
Thu -- 02:05 AM HST     0.21 feet Low Tide
Thu -- 06:08 AM HST     Sunrise
Thu -- 08:39 AM HST     1.09 feet High Tide
Thu -- 11:26 AM HST     Moonset
Thu -- 01:37 PM HST     0.76 feet Low Tide
Thu -- 07:18 PM HST     Sunset
Thu -- 07:39 PM HST     1.34 feet High Tide
Thu -- 11:31 PM HST     Moonrise
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
0.50.30.20.30.40.60.811.11.110.90.80.80.80.80.91.11.21.31.31.21.10.8

Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS Local Image of Hawaii    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.