Coastal Flood Warning issued April 13 at 3:54PM ChST until April 16 at 5:00AM ChST by NWS Tiyan GU

Details

* WHAT...For the High Surf Warning, dangerously large breaking waves
of 12 to 16 feet for Guam and 15 to 25 ft for Rota, Tinian and
Saipan. For the Coastal Flood Watch, significant coastal flooding 1
to 3 ft for Guam, and 4 to 8 ft for Rota, Tinian, and Saipan.

* WHERE...North, east and south facing reefs of the Marianas. For the
Coastal Flood Watch, north, east, and south facing shorelines.

* WHEN...For the High Surf Warning, until 6 PM ChST Thursday. For
the Coastal Flood Watch, through Wednesday afternoon.

* IMPACTS...Numerous roads may be closed. Low lying property
including homes, businesses, and some critical infrastructure may
be inundated. Some shoreline erosion may occur. Breaking waves can
sweep people off jetties and docks, and into dangerous seas. Life-
threatening swimming conditions and significant beach erosion can
be expected.

* ADDITIONAL DETAILS...As STY Sinlaku moves towards the Marianas
swell and surf will continue to build. This will maintain dangerous
surf and coastal inundation, especially as STY Sinlaku begins to
move through the Marianas on Tuesday. Inundation has already been
reported at Inarajan Pools.