Thursday, April22, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Kalaoa, HI

Version 3.4
NOTICE
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 5:55AMSunset 6:41PM Thursday April 22, 2021 5:01 PM HST (03:01 UTC) Moonrise 2:40PMMoonset 3:00AM Illumination 85% 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
PHZ123 Big Island Leeward Waters- 332 Pm Hst Thu Apr 22 2021
.small craft advisory in effect through early Sunday morning...
Tonight..Northwest winds 10 knots west of the big island...east to 25 knots near south point. Wind waves 8 feet. Northwest swell 3 feet. Isolated showers.
Friday..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 8 feet. Northwest swell 3 feet. Isolated showers in the morning.
Friday night..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers.
Saturday..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers in the morning.
Saturday night..Winds variable less than 10 knots west of the big island...east to 25 knots near south point. Wind waves 7 feet. Isolated showers.
Sunday..West of the big island, southeast winds 10 knots backing northwest in the afternoon. NEar south point, east winds to 25 knots. Wind waves 8 feet. Isolated showers in the morning.
Sunday night..West of the big island, southeast winds 10 knots in the evening becoming variable less than 10 knots. NEar south point, east winds to 25 knots. Wind waves 8 feet. Isolated showers through the night.
Monday..West of the big island, winds variable less than 10 knots. NEar south point, east winds to 25 knots easing to 15 knots. Wind waves 5 to 7 feet. Isolated showers.
Tuesday..Winds variable less than 10 knots west of the big island...east 10 knots near south point. Wind waves 4 feet. West swell 3 feet. Isolated showers.
PHZ100 332 Pm Hst Thu Apr 22 2021
Synopsis for hawaiian coastal waters.. A surface trough north of kauai will dissipate tonight. High pressure north of the islands will maintain breezy trade winds through the weekend. Winds will trend down Monday and turn southeast.


7 Day Forecast for Marine Location Near Kalaoa, HI
   Hourly   EDIT   Help
location: 19.75, -156.05     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXHW60 PHFO 230135 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI 335 PM HST Thu Apr 22 2021

SYNOPSIS. Moderate to breezy easterly trade winds will persist through the weekend, with clouds and showers favoring windward and mountain locations. Windward shower coverage could increase late Friday through Saturday night as an upper low moves through from north to south. Warm and humid conditions may return early next week as the trade winds diminish in response to a front passing far to the north.

DISCUSSION. The surface trough near Kauai that disrupted trade winds through the first half of the week will continue retreating westward away from the area through Friday. Easterly trade winds will continue to fill in from east to west as high pressure builds to the north, establishing a stable trade wind regime into Friday. Showers will favor windward and mountain locations, with the best coverage likely through the overnight and early morning periods.

Windward showers may increase late Friday through Saturday night as an upper low drops southward into the area. Some showers could reach leeward locations as the inversion weakens and the trades become breezy. In addition to the increasing shower coverage, a thunderstorm or two can't be ruled out over the Big Island slopes through the afternoon hours Friday and Saturday.

Models show the upper low briefly drifting south of the state Sunday through Sunday night, then lifting back through the area and merging with an upper trough passing to the north Monday through Tuesday. The subtropical ridge will weaken once again as a front passes to the north. If this scenario evolves, a land and sea breeze regime, with warm and humid conditions, will return and continue through the first half of next week. Clouds and showers will shift back over interior and leeward locations through the afternoon hours.

AVIATION. Trade winds will strengthen across the state through Friday. VFR conditions will prevail through midnight with brief/isolated mountain obscurations over the windward slopes. Increasing clouds and showers is anticipated for the windward side of the Big Island after midnight as upstream moisture tracks in with the trade wind flow. No AIRMETs are in effect, but may be needed for the Big Island later on tonight.

An upper low will move south over Hawaii on Friday and may boost clouds and showers around the state.

MARINE. A surface high passing north of the islands will boost trade winds into the fresh to locally strong range through the weekend. A small craft advisory is in effect for the windier waters around Maui County and the Big Island. Winds are expected to trend down next week as the high weakens.

A northwest swell is bringing moderate surf along north and west facing shores. This swell will decline through Friday. A small west northwest swell is possible next week with a source from a long lived distant typhoon. A small short period northwest pulse may arrive next Thursday.

Small, long period swell from the southern hemisphere will maintain small surf along south facing shores. Expect east shore surf to build to small to moderate heights over the weekend, and then diminish Monday.

HFO WATCHES/WARNINGS/ADVISORIES. Small Craft Advisory until 6 AM HST Sunday for Maalaea Bay- Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters.



DISCUSSION . Powell AVIATION . Foster MARINE . Morrison


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
KWHH1 23 mi44 min WSW 8.9 G 12 78°F 80°F1014.6 hPa
ILOH1 - 1617760 - Hilo, HI 53 mi44 min ENE 6 G 9.9 77°F 77°F1015 hPa
KLIH1 - 1615680 - Kahului Bay, Maui, HI 82 mi44 min ENE 15 G 22 76°F 80°F1015.1 hPa

Wind History for Kawaihae, 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
SW8
SW7
G10
SW9
G12
SW9
G12
W8
NW6
W4
W7
N2
G5
NE4
NE5
NE4
NE4
NE4
N4
NW5
G8
NW9
G12
W7
NW9
W9
W11
W10
SW10
W11
1 day
ago
W5
SW1
SE3
S2
S2
SE4
SE2
SW10
G13
SW6
E4
NE4
E1
--
NE3
NE3
S2
W4
W5
W7
W6
SW5
SW5
SW7
SW8
2 days
ago
S4
W2
S3
S3
SE3
S2
NE2
E1
NE2
E3
E1
NE2
NE5
N2
N1
NW4
W6
W10
W10
NW6
W5
W7
W8
W5

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kailua / Kona, Keahole Airport, HI7 mi69 minSSW 1010.00 miMostly Cloudy82°F67°F60%1014.4 hPa

Link to 5 minute data for PHKO

Wind History from HKO (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 24hrSE17SE14SE12E53W33CalmNE8N4SE4E4NE10E5SE5CalmW6W7W8SW10W10SW9SW10S10
1 day agoW8W8NW11NW9SW8SW8SE8SE6SE4SE3SE4SE6CalmCalmCalmCalmSW7SW7SW10SW11SW13SW11SW11S11
2 days agoW6SW5SW6SW4SW3SE4SE4SE6SE7SE9SE7SE7E8SE8SE9SE9S7S10SW9W9W7W6W7W7

Tide / Current Tables for Kailua Kona, Big Island, Hawaii (2)
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Kailua Kona
Click for Map
Thu -- 12:00 AM HST     1.76 feet High Tide
Thu -- 02:59 AM HST     Moonset
Thu -- 06:00 AM HST     Sunrise
Thu -- 07:09 AM HST     -0.09 feet Low Tide
Thu -- 12:59 PM HST     1.02 feet High Tide
Thu -- 02:40 PM HST     Moonrise
Thu -- 06:18 PM HST     0.18 feet Low Tide
Thu -- 06:44 PM HST     Sunset
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
1.81.71.41.10.70.30-0.1-00.20.50.70.910.90.80.50.30.20.20.40.71.11.5

Tide / Current Tables for Kailua Kona, Big Island, Hawaii
   EDIT      (on/off)   Help   One Week of Data
Kailua Kona
Click for Map
Thu -- 12:04 AM HST     1.84 feet High Tide
Thu -- 02:59 AM HST     Moonset
Thu -- 06:00 AM HST     Sunrise
Thu -- 07:08 AM HST     -0.01 feet Low Tide
Thu -- 01:01 PM HST     1.10 feet High Tide
Thu -- 02:40 PM HST     Moonrise
Thu -- 06:25 PM HST     0.26 feet Low Tide
Thu -- 06:44 PM HST     Sunset
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
1.81.81.51.20.80.40.1-00.10.30.50.811.110.90.60.40.30.30.50.81.11.5

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.