Johnston Atoll
16-Day Marine Weather Forecast Print

Monday 8/18

Morning

Breezy E winds with moderate choppy seas. Moderate short period waves.

Winds: E 15 to 19 knots.

Seas: E 7 feet at 8 seconds.

Afternoon

Moderate to strong E winds with choppy seas. Moderate short period waves.

Winds: E 15 to 17 knots.

Seas: E 6 feet at 9 seconds.

Tuesday 8/19

Morning

Moderate to strong E winds with choppy seas. Moderate short period waves.

Winds: E 15 to 16 knots.

Seas: E 6 feet at 8 seconds.

Afternoon

Breezy ENE winds with moderate choppy seas. Moderate short period waves.

Winds: ENE 11 to 14 knots.

Seas: E 6 feet at 8 seconds.

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16-Day Wind, Waves & Tide Print
Wind
Avg. (kts)
Gust (kts)
Direction
Waves
Avg. (ft)
Peak (ft)
Direction
Per. (sec)
Weather
Precip. (in)
Temp (f)
Pressure (mb)

Tides

4ft
2ft
Sea Level
-2ft
-4ft
Monday 8/18
12am
15
21

E
7
9

E
8
3am
16
19

E
7
9

E
8
6am
15
19

E
7
9

E
8
9am
13
17

ENE
7
8

E
9
12pm
13
16

ENE
6
8

E
9
3pm
16
17

ENE
6
8

E
9
6pm
15
17

E
6
8

E
9
9pm
14
17

E
6
8

E
9
Tuesday 8/19
12am
16
18

E
6
8

E
8
3am
15
18

ENE
6
8

E
8
6am
15
16

E
6
8

E
8
9am
15
16

E
6
8

E
8
12pm
14
17

E
6
8

E
8
3pm
13
15

E
6
8

E
8
6pm
11
14

ENE
6
7

E
8
9pm
14
18

ENE
5
7

E
8

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Monday 8/18
12am
NIGHT_CLEAR
0
80
1017
3am
NIGHT_CLEAR
0
80
1015
6am
NIGHT_CLEAR
0
80
1014
9am
CLOUDY
0
80
1016
12pm
CLEAR
0
81
1015
3pm
CLEAR
0
81
1014
6pm
CLEAR
0
81
1013
9pm
NIGHT_BRIEF_SHOWERS_POSSIBLE
0
80
1014
  • Sunrise: 7:03AM
  • Sunset: 7:43PM
  • Moonrise: 2:38AM
  • Moonset: 3:25PM
  • 25% Waning Crescentwaning crescent
Tuesday 8/19
12am
NIGHT_CLEAR
0
80
1015
3am
NIGHT_CLEAR
0
80
1014
-
6am
NIGHT_CLEAR
0
80
1014
9am
CLEAR
0
80
1015
-
12pm
CLEAR
0
80
1015
3pm
CLEAR
0
81
1013
-
6pm
CLEAR
0
81
1013
9pm
NIGHT_BRIEF_SHOWERS_POSSIBLE
0
81
1015
-
  • Sunrise: 7:04AM
  • Sunset: 7:42PM
  • Moonrise: 3:42AM
  • Moonset: 4:29PM
  • 16% Waning Crescentwaning crescent

Swell - Model Run: 17th Aug, 08:00:PM HST / Last Updated: 18th Aug, 08:02:AM HSTWeather - Model Run: 17th Aug, 08:00:PM HST / Last Updated: 18th Aug, 03:29:AM HST

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