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Special Weather Statement — Koror Palau Coastal Waters; Yap Coastal Waters

Structured official-source report · Published Sep 20, 5:32 AM UTC · Updated Sep 20, 4:22 AM UTC
WATCH · active

Latest status

An active monsoon pattern has developed across Western Micronesia with recent satellite imagery showing broad areas of heavy showers and thunderstorms. Midday satellite-derived surface wind data depicts 15 to 20 mph west winds across Yap State with a few areas of stronger gusts north of Faraulep. Computer models point to a continuation of these conditions into midweek with periods of heavy showers moving across the islands, occasionally bringing increased winds, gusts and choppy seas. By midweek, models indicate the potential for a circulation to slowly organize as it passes between Yap and Guam into the Philippine Sea. As this happens, westerly winds and gusts will increase with showers and thunderstorms. While these conditions will generally be felt across Yap State, portions of the Republic of Palau could see heavy showers and thunderstorms dropping south early in the week. Residents should continue to monitor forecasts and listen for any marine advisories that may be issued over the next several days. Be aware of the latest weather conditions and trends before traveling between islands. Stay up-to-date with all the latest forecasts at weather.gov/gum and by following the latest information from your local Weather Service Office.

Where it happened

Koror Palau Coastal Waters; Yap Coastal Waters

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Latest reported details

official severity
Moderate
urgency
Expected
certainty
Observed
event
Special Weather Statement
areas
Koror Palau Coastal Waters; Yap Coastal Waters

Missing values are unconfirmed, not zero. Magnitude and alert classifications do not establish casualty totals.

What officials are saying

Read the original reports below for instructions and the latest authoritative assessment. StormScapes does not independently confirm damage or issue evacuation orders.

What happens next

Follow updates from the responsible agency and local emergency management. Reports can change as new information becomes available.

Incident timeline

Sep 20, 4:22 AM UTC · nws

An active monsoon pattern has developed across Western Micronesia with recent satellite imagery showing broad areas of heavy showers and thunderstorms. Midday satellite-derived surface wind data depicts 15 to 20 mph west winds across Yap State with a few areas of stronger gusts north of Faraulep. Computer models point to a continuation of these conditions into midweek with periods of heavy showers moving across the islands, occasionally bringing increased winds, gusts and choppy seas. By midweek, models indicate the potential for a circulation to slowly organize as it passes between Yap and Guam into the Philippine Sea. As this happens, westerly winds and gusts will increase with showers and thunderstorms. While these conditions will generally be felt across Yap State, portions of the Republic of Palau could see heavy showers and thunderstorms dropping south early in the week. Residents should continue to monitor forecasts and listen for any marine advisories that may be issued over the next several days. Be aware of the latest weather conditions and trends before traveling between islands. Stay up-to-date with all the latest forecasts at weather.gov/gum and by following the latest information from your local Weather Service Office.

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