Alerts from NWS Guam (UNOFFICIAL)
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Alerts from NWS Guam (UNOFFICIAL)
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Small Craft Advisory issued January 17 at 5:07PM ChST until January 18 at 5:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...East wind 10 to 20 kt. Gusts to 30 kt near heavier showers. * WHERE...Chuuk Coastal Waters. * WHEN...Until 5 AM ChST Sunday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A tropical disturbance passing to the south is expected to bring frequent gusts to 25 kt and occasional gusts to 30 kt near heavier showers through early Sunday morning.
January 17, 2026 at 7:15 AM
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Special Weather Statement issued January 17 at 5:07PM ChST by NWS Tiyan GU
Additional Details Here.
A broad tropical disturbance is currently producing unsettled weather across much of Chuuk State. Daytime satellite trends show a poorly organized system, where a weak circulation lingered near Kapingamarangi this morning, but the disturbance is now becoming better organized farther northwest along an attendant trough, near Chuuk Lagoon this afternoon. As this disturbance slowly moves west- northwest over the next few days, it is expected to maintain a period of unsettled weather through Sunday night. Numerous to widespread locally heavy showers and isolated thunderstorms are expected. Periods of heavy rainfall with 3 to 5 inches of accumulation possible through Sunday night. A Small Craft Advisory is in effect through early Sunday morning for frequent gusts to 25 kt and occasional gusts to 30 kt with heavier showers. If this disturbance remains poorly organized on Sunday, choppy seas are still expected, but gusts to 25 kt are occasional, near heavier showers. Further updates will be provided as we monitor trends in satellite observations and model guidance. Residents and mariners should continue monitor the latest forecasts for the region at weather.gov/gum/PublicForecasts and any information shared by WSO Chuuk for their local region.
January 17, 2026 at 7:15 AM
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Special Weather Statement issued January 17 at 3:02PM ChST by NWS Tiyan GU
Additional Details Here.
The Special Weather Statement for Pohnpei and Kosrae is no longer in effect and will not be further updated for the tropical disturbance that brought heavy rain to the region yesterday. An active weather pattern will continue late this weekend into next week as the ITCZ strengthens across the region. Locally heavy rainfall will be possible during active phases in ITCZ convection. This will be the last Special Weather Statement issued for Pohnpei and Kosrae. For the latest weather info, visit weather.gov/gum/PublicForecasts or listen for information shared by WSO Pohnpei.
January 17, 2026 at 5:15 AM
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High Surf Advisory issued January 17 at 2:50PM ChST until January 18 at 3:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Large breaking waves of 8 to 10 ft. * WHERE...North facing reefs of Pohnpei. * WHEN...Until 3 AM ChST Sunday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. * ADDITIONAL DETAILS...A combination of elevated trade swell and northerly swell will lead to hazardous surf along north facing reefs of Pohnpei through early Sunday morning. Occasional surf of 9 feet is possible at times, but swell is expected to diminish tonight.
January 17, 2026 at 5:00 AM
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High Surf Advisory issued January 17 at 2:44AM ChST until January 18 at 3:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Large breaking waves of 8 to 10 ft. * WHERE...North facing reefs of Pohnpei. * WHEN...Until 3 AM ChST Sunday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. * ADDITIONAL DETAILS...A combination of elevated trade swell, northerly swell will lead to hazardous surf along north facing reefs of Pohnpei through early Sunday morning. Swell could remain elevated for north facing reefs through the weekend.
January 16, 2026 at 4:45 PM
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Small Craft Advisory issued January 17 at 2:43AM ChST until January 17 at 3:00PM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Seas 7 to 10 feet expected. * WHERE...Majuro Coastal Waters. * WHEN...Until 3 PM ChST this afternoon. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A significant trade swell, in addition to elevated northerly swell, are producing sea conditions hazardous to small craft.
January 16, 2026 at 4:45 PM
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Small Craft Advisory issued January 16 at 10:02PM ChST until January 17 at 3:00AM ChST by NWS Tiyan GU
Additional Details Here.
Corrected typo. ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CHST SATURDAY... * WHAT...East winds 15 to 25 kt with occasional gusts to 30 kt and seas 7 to 10 feet expected. * WHERE...Pohnpei and Majuro Coastal Waters. * WHEN...Until 3 AM ChST Saturday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...For Pohnpei, a combination of elevated trade swell, northerly swell, and significantly higher localized wind waves produced by a developing tropical disturbance, will continue to produce sea conditions hazardous to small craft. Conditions should begin to improve by Saturday as various swells and wind waves diminish. For Majuro, a significant trade swell, in addition to elevated northerly swell and higher localized wind waves, are producing sea conditions hazardous to small craft.
January 16, 2026 at 12:15 PM
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Special Weather Statement issued January 16 at 5:29PM ChST by NWS Tiyan GU
Additional Details Here.
A tropical disturbance is currently producing unsettled weather across Pohnpei, Kosrae, and eastern Chuuk State. As this disturbance moves west-northwest over the next few days, it is expected to pass to the south of Chuuk Lagoon and bring a period of unsettled weather Saturday through Sunday night. Numerous to widespread locally heavy showers and isolated thunderstorms are expected, with gusts to 30 kt possible near heavier showers. Periods of heavy rainfall with 3 to 6 inches of accumulation possible through Sunday night. Some uncertainty still exists about how quickly the tropical disturbance will develop or if it lingers in southern Chuuk State a bit longer, but further updates will be provided as we monitor trends in satellite observations and model guidance. Residents and mariners should continue monitor the latest forecasts for the region at weather.gov/gum/PublicForecasts and any information shared by WSO Chuuk for their local region.
January 16, 2026 at 7:30 AM
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Special Weather Statement issued January 16 at 5:24PM ChST by NWS Tiyan GU
Additional Details Here.
A tropical disturbance is currently producing unsettled weather across Pohnpei, Kosrae, and eastern Chuuk State. As this disturbance moves west-northwest over the next few days, it is expected to pass to the south of Chuuk Lagoon and bring a period of unsettled weather Saturday through Sunday night. Numerous to widespread locally heavy showers and isolated thunderstorms are expected, with gusts to 30 kt possible near heavier showers. Periods of heavy rainfall with 3 to 6 inches of accumulation possible through Sunday night. Some uncertainty still exists about how quickly the tropical disturbance will develop or if it lingers in southern Chuuk State a bit longer, but further updates will be provided as we monitor trends in satellite observations and model guidance. Residents and mariners should continue monitor the latest forecasts for the region at weather.gov/gum/PublicForecasts and any information shared by WSO Chuuk for their local region.
January 16, 2026 at 7:30 AM
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Special Weather Statement issued January 16 at 4:52PM ChST by NWS Tiyan GU
Additional Details Here.
A tropical disturbance is currently producing unsettled weather across Pohnpei and Kosrae and is expected to remain in the region through at least Saturday. The tropical disturbance is interacting with the Near-Equatorial Trough (NET) and a strengthening Inter- Tropical Convergence Zone (ITCZ) to produce numerous to widespread showers and isolated thunderstorms. East winds of 15 to 25 kt with gusts to 30 kt are occurring over Pohnpei due to the pressure gradient between the tropical disturbance and the high pressure to the north. Isolated gusts up to 35 kt will be possible across Pohnpei. A Small Craft Advisory is currently in place for Pohnpei and choppy seas are expected to continue for Kosrae through this weekend. As the disturbance moves west-northwest over the next several days, the ITCZ will strengthen behind it, keeping Pohnpei and Kosrae in the showers for longer. Uncertainty still exists about how quickly the tropical disturbance will come together or if it lingers further south for longer, but further updates will be provided as we monitor trends in satellite observations and model guidance. Residents and mariners should monitor the latest forecasts for the region at weather.gov/gum/PublicForecasts and any information shared by WSO Pohnpei for their local region.
January 16, 2026 at 7:00 AM
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Small Craft Advisory issued January 16 at 3:03PM ChST until January 17 at 3:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...East winds 15 to 25 kt with occasional gusts to 30 kt and seas 7 to 10 feet expected. * WHERE...Pohnpei and Majuro Coastal Waters. * WHEN...From 6 AM today through 3 AM ChST Saturday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS... For Pohnpei, a combination of elevated trade swell, northerly swell, and significantly higher localized wind waves produced by a developing tropical disturbance, will continue to produce sea conditions hazardous to small craft. Conditions should begin to improve by Saturday as various swells and wind waves diminish. For Majuro, a significant trade swell, in addition to elevated northerly swell and higher localized wind waves, are producing sea conditions hazardous to small craft.
January 16, 2026 at 5:15 AM
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High Surf Advisory issued January 16 at 3:03PM ChST until January 18 at 3:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Large breaking waves of 8 to 11 ft. * WHERE...North facing reefs of Pohnpei. * WHEN...Until 3 AM ChST Sunday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. * ADDITIONAL DETAILS...A combination of elevated trade swell, northerly swell, and significantly higher localized wind waves produced by a developing tropical disturbance will lead to hazardous surf along north facing reefs of Pohnpei through early Sunday morning. Swell could remain elevated for north facing reefs through the weekend.
January 16, 2026 at 5:15 AM
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Small Craft Advisory issued January 16 at 2:25AM ChST until January 17 at 3:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Northeast winds 20 to 25 kt and seas 8 to 10 feet. * WHERE...Majuro Coastal Waters. * WHEN...Until 3 AM ChST Saturday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A significant trade swell, in addition to elevated northerly swell and higher localized wind waves, are producing sea conditions hazardous to small craft. * WHAT...East winds 15 to 25 kt with occasional gusts to 30 kt and seas 7 to 10 feet expected. * WHERE...Pohnpei Coastal Waters. * WHEN...From 6 AM today through 3 AM ChST Saturday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A combination of elevated trade swell, northerly swell, and significantly higher localized wind waves produced by a developing tropical disturbance, are expected to produce sea conditions hazardous to small craft beginning today. Conditions may begin to improve by Saturday as various swells and windwaves diminish.
January 15, 2026 at 4:30 PM
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Small Craft Advisory issued January 15 at 2:52PM ChST until January 17 at 3:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Northeast winds 20 to 25 kt and seas 8 to 10 feet. * WHERE...Majuro Coastal Waters. * WHEN...Until 3 AM ChST Saturday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A significant trade swell, in addition to elevated northerly swell and higher localized wind waves, are producing sea conditions hazardous to small craft. * WHAT...East winds 15 to 25 kt with occasional gusts to 30 kt and seas 7 to 10 feet expected. * WHERE...Pohnpei Coastal Waters. * WHEN...From 6 AM Friday to 3 AM ChST Saturday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A combination of elevated trade swell, northerly swell, and significantly higher localized wind waves produced by a developing tropical disturbance, are expected to produce sea conditions hazardous to small craft beginning Friday. Conditions may begin to improve by Saturday as various swells and windwaves diminish.
January 15, 2026 at 5:00 AM
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Rip Current Statement issued January 15 at 2:57AM ChST until January 16 at 4:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Dangerous rip currents. * WHERE...East facing reefs of the Marianas. * WHEN...Through late tonight. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Trade-wind swell and secondary northerly swell are expected to maintain a high risk of rip currents along east facing reefs through late tonight.
January 14, 2026 at 5:00 PM
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Rip Current Statement issued January 14 at 4:09PM ChST until January 16 at 4:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Dangerous rip currents. * WHERE...East facing reefs of the Marianas. * WHEN...Through late Thursday night. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Trade-wind swell and secondary northerly swell are expected to maintain a high risk of rip currents along east facing reefs through late Thursday night.
January 14, 2026 at 6:15 AM
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Rip Current Statement issued January 14 at 3:49AM ChST until January 16 at 4:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Dangerous rip currents. * WHERE...East facing reefs of the Marianas. * WHEN...Through late Thursday night. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Building east swell will maintain a high risk of rip currents for the next few days.
January 13, 2026 at 6:01 PM
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Special Weather Statement issued January 13 at 5:17PM ChST by NWS Tiyan GU
Additional Details Here.
The unsettled weather pattern will continue over the next couple of days as Invest 91W and the Near-Equatorial Trough (NET), progress to the west-northwest. 91W is currently centered to the south of Palau near 5N134E. 91W continues to become better organized, with numerous to widespread showers and isolated thunderstorms over and west of Palau and Yap Proper. As 91W moves west-northwest, convection will decrease a bit at both Yap and palau, before increasing again as the system moves closer to 130E due to increasing convergence across the region. Invest 91W could still become a Tropical Depression near 130E, but it looks more likely that this will occur a bit farther west. After tonight, the threat of heavy rainfall diminishes significantly. Therefore, this will be the last update for the Special Weather Statement unless the situation changes. Residents and mariners should continue to monitor the latest forecasts for the region at weather.gov/gum/PublicForecasts and any information shared by WSO Palau and WSO Yap for their local regions, in case any changes are needed.
January 13, 2026 at 7:30 AM
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Small Craft Advisory issued January 13 at 4:24PM ChST until January 14 at 5:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Seas 7 to 10 feet. * WHERE...Tinian and Saipan Coastal Waters. * WHEN...Until 5 AM ChST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...Building trade-wind swell will combine with a brief pulse of north swell to produce seas hazardous to small craft for Tinian and Saipan waters. This will mostly affect the northern waters of Saipan. However, it could briefly affect the northwestern waters of Tinian.
January 13, 2026 at 6:30 AM
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Rip Current Statement issued January 13 at 3:31PM ChST until January 16 at 4:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Dangerous rip currents. * WHERE...East facing reefs of the Marianas. * WHEN...Through late Thursday night. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Building east swell will maintain a high risk of rip currents for the next few days.
January 13, 2026 at 5:45 AM
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Small Craft Advisory issued January 13 at 3:55AM ChST until January 13 at 5:00PM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Northeast winds 15 to 20 kt with gusts up to 35 kt and seas 8 to 11 feet. * WHERE...Palau Coastal Waters. * WHEN...Until 5 PM ChST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A developing disturbance will pass nearby, which is bringing another increase in winds and seas, possibly seeing gusts up to 35 kt through this afternoon. * WHAT...Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 11 feet. * WHERE...Yap Coastal Waters. * WHEN...Until 5 PM ChST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...Hazardous winds and seas are expected through Tuesday afternoon. A developing disturbance is passing to the south, which is expected to prolong fresh to strong winds and choppy, hazardous seas through this afternoon.
January 12, 2026 at 6:00 PM
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High Surf Advisory issued January 13 at 3:57AM ChST until January 13 at 5:00PM ChST by NWS Tiyan GU
Additional Details Here.
Correct When ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... * WHAT...Large breaking waves of 8 to 11 feet. * WHERE...North facing reefs of Yap and Palau. * WHEN...Until 5 PM ChST this afternoon. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. * ADDITIONAL DETAILS...Large northeast swell continues, producing hazardous surf of 8 to 11 feet along north facing reefs through this afternoon.
January 12, 2026 at 6:00 PM
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Rip Current Statement issued January 13 at 2:48AM ChST until January 16 at 4:00AM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Dangerous rip currents. * WHERE...East facing reefs of the Marianas. * WHEN...Through late Thursday night. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Building east swell will maintain a high risk of rip currents for the next few days. The north component of the swell has decreased enough for surf to fall below hazardous levels along north facing reefs.
January 12, 2026 at 5:00 PM
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Special Weather Statement issued January 12 at 5:38PM ChST by NWS Tiyan GU
Additional Details Here.
An unsettled weather pattern is expected to continue over the next couple of days as a developing tropical disturbance, JTWC Invest 91W, within the Near-Equatorial Trough (NET), currently south of Yap Proper and Ngulu in Yap State, gradually becomes better organized as it moves west-northwestward over the next few days. 91W is currently centered near 4N138E. This is expected to remain as a broad, elongated circulation for the next couple days, with convergence north of the disturbance remaining over Yap and Palau through at least Tuesday night. Numerous to widespread, locally heavy showers and isolated to scattered thunderstorms are expected to continue to develop east of Palau and east-southeast of Yap and move into both locations. With this, northeast winds of 15 to 25 kt and gusts to 35 kt remain possible, especially with heavier showers and thunderstorms. then become east to southeast around midweek as the circulation passes near Koror. Elevated, choppy seas also remain possible over the next several days. As 91W moves west-northwest of Palau in the latter half of the week, trailing showers within the south-southwesterly flow may continue to impact Palau, and to a lesser extent, Yap, through late week. Further updates will be provided as we monitor trends in satellite observations and model guidance. If rainfall remains heavy, mudslides may become a concern. Residents and mariners should monitor the latest forecasts for the region at weather.gov/gum/PublicForecasts and any information shared by WSO Palau and WSO Yap for their local regions.
January 12, 2026 at 7:45 AM
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Small Craft Advisory issued January 12 at 4:31PM ChST until January 13 at 5:00PM ChST by NWS Tiyan GU
Additional Details Here.
* WHAT...Northeast winds 15 to 20 kt with gusts up to 35 kt and seas 8 to 11 feet. * WHERE...Palau Coastal Waters. * WHEN...Until 5 PM ChST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...A developing disturbance will pass nearby, which is bringing another increase in winds and seas, possibly seeing gusts up to 35 kt through Tuesday. * WHAT....Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 11 feet. * WHERE...Yap Coastal Waters. * WHEN...Until 5 PM ChST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...Hazardous winds and seas are expected through Tuesday afternoon. A developing disturbance is passing to the south, which is expected to prolong fresh to strong winds and choppy, hazardous seas through Tuesday afternoon.
January 12, 2026 at 6:45 AM