Chuuk, Federated States of Micronesia Weather Conditions

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Current Conditions

  • 84°
  • Partly Cloudy
  • Wind: NNE 12 mph
  • Humidity: 76%
  • Visibility: 10.0 miles
  • Dew Point: 76°
  • Pressure: 29.73 in. -
  • Heat Index: 94

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Next 12 Hours

2  am
5  am
8  am
11  am
2  pm
Chance of Rain
Chance of Rain
Partly Cloudy
Partly Cloudy
Thunderstorm
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81°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Thunderstorm
  • High: 86 °
  • Low: 79 °
  • T-Storms
  • Friday
  • Thunderstorm
  • High: 85 °
  • Low: 79 °
  • T-Storms
  • Saturday
  • Thunderstorm
  • High: 85 °
  • Low: 79 °
  • T-Storms
  • Sunday
  • Chance of a Thunderstorm
  • High: 85 °
  • Low: 79 °
  • Chance of T-Storms
  • Monday
  • Chance of a Thunderstorm
  • High: 86 °
  • Low: 79 °
  • Chance of T-Storms

Forecast for Chuuk, Federated States of Micronesia

Forecast as of:

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NWS Forecaster Discussion




Area forecast discussion 
National Weather Service tiyan GU 
705 am chst Thursday Jul 2 2015 


Synopsis...northeast winds and isolated showers will prevail today. 
Showers and winds will increase as Chan-Hom approaches the 
marianas. 


&& 


Discussion... 
the main concern is what will Chan-Hom do. The track forecast is 
still not certain as projections have shifted between a passage 
to the north of Guam and also to the south of Guam. Despite the 
early morning prediction of Chan-Hom passing through the Rota 
channel left the old forecast that shows the storm passing south 
of Guam. Feel uncomfortable with flip-flopping the track until the 
models settle down on their predictions. At any rate felt that 
this did not sacrifice accuracy all that much as the forecast 
predicts that tropical storm or even typhoon condition are 
possible for all the islands. Changed the arrival time as the 
storm has slowed its forward speed. The earlier forecast had Chan- 
Hom passing Saturday afternoon...now because of the slower speed 
passage is closer to Saturday night. Winds should start to pick-up 
Friday becoming breezy Friday night. Tropical storm force winds 
are possible by noon Saturday with typhoon condition a 
possibilityby Saturday night. 


If figuring out what Chan-Hom will do seems complicated then the 
addition of the circulation south of Guam known as 94w adds more 
dimensions to that complication. This circulation is still an 
independent circulation but is expected to be absorbed by Chan- 
Hom as time GOES on. Mergers are complicated as the interaction of 
the two may change the track in still unforeseen ways. After chan- 
homs passage the marianas will be in southwest winds as the storm 
will drag the monsoon trough north of the local area. 


&& 


Marine... 
buoy data showed an east swell over the marianas this morning. There 
is winds generated along the monsoon trough south of the marianas 
is pushing waves in this direction generating a southwest swell. 
Combined seas of 5 to 6 feet today will begin increasing by 
Friday. Combined seas are projected to reach 15 to 17 feet 


&& 


Eastern micronesia... 
a monsoon trough meanders eastward from a circulation...jtwc invest 
94w centered west of weno Chuuk near 8n148e through Tropical Storm Chan- 
Hom centered northwest of Pohnpei near 11n155e and another circulation 
..jtwc invest 97w centered east of Majuro near 7n175e to beyond 
180 at 7n. Converging fresh to strong southwest winds feeding 
toward Chan-Hom and the monsoon trough will maintain showery 
weather near Chuuk and Pohnpei through Friday. Farther east...monsoonal 
west to southwest winds associated with 97w will also sustain 
similar conditions near Kosrae and Majuro through Friday. Enhanced by 
an upper- level trough in the vicinity...deep convection is 
possible near Majuro tonight and Friday. 


As Tropical Storm Chan-Hom drifts west-northwestward passing north 
of Chuuk on Friday...it might merge with 94w which can cause its 
wind field to expand. If so...wet weather produced by convergent 
southwest winds will continue over Chuuk through Saturday. 97w and the 
monsoon trough are also expected to lift slowly west-northwestward 
over the next couple of days. This should allow weaker monsoonal 
winds farther south to shift over Pohnpei...Kosrae and Majuro by 
this weekend. Under this scenario...shower coverage should begin to 
decrease over these three locations. By early next week...gentle 
south to southeast trades might return to Kosrae and Majuro with 
fair weather. However...lingering monsoonal winds can still trigger 
isolated convection for Pohnpei and Chuuk through Monday. 


Latest satellite-derived sea heights indicate 9 to 12 feet near 
Chuuk and Pohnpei states...and 8 to 10 feet across Kosrae and the 
Marshall Islands. These values are relatively close with ww3 model 
predictions. Southwest swell and wind waves produced by fresh 
monsoonal winds will prolong hazardous surf across Chuuk...Pohnpei 
and Kosrae states through this weekend. These same elements will also 
cause sea conditions hazardous for small craft across the Marshall 
Islands...Kosrae until Friday afternoon and Pohnpei...Chuuk through 
Saturday afternoon. Coincided with a peaking Spring tide cycle... 
minor coastal inundations are possible along south and west facing 
shores near Majuro. 


&& 


Western micronesia... 
discussion for the Chuuk forecast is included in the eastern 
micronesia section above due to a similar weather pattern. 


A strong monsoon trough extends east-southeastward from Luzon 
passing 13n130e and north of Koror and Yap near 11n to Tropical 
Storm Chan-Hom centered northeast of Chuuk near 11n155e. Monsoonal 
winds south of the trough will continue to generate sporadic 
convection near Koror and Yap through Friday. As Chan-Hom gradually 
tracks west-northwestward toward the Mariana islands Friday night 
and Saturday...it will reinforce another monsoonal wind surge across 
Koror and Yap. Therefore anticipate even wetter weather for both 
locals through Saturday. Depends on the intensity of Chan-Hom after it 
has moved over the Philippine Sea north of Palau and Yap early next 
week...it might still maintain a wet monsoonal regime over the area. 


Satellite-derived sea heights data trend for the past couple of days 
reveals rising seas across the Republic of Palau and Yap state. 
Latest data suggest seas are reaching 10 feet this morning. This is 
a good indication of rising swell and wind waves caused by 
persistent monsoonal winds. Expect this trend to continue through this 
weekend which will prolong hazardous surf and sea conditions 
hazardous to small craft across the Republic of Palau and Yap state 
into next week. 


&& 


Gum watches/warnings/advisories... 
GU...none. 
Marianas waters...none. 
&& 


$$ 


Ziobro/chan 



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