COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 5 AM CHST THURSDAY... ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM CHST THURSDAY
* WHAT...For the High Surf Warning, dangerously large breaking waves
of 12 to 16 feet for Guam and 15 to 20 ft for Rota and 20 to 30
ft at Tinian and Saipan. For the Coastal Flood Warning,
significant coastal flooding 1 to 3 ft for Guam, and 3 to 5 ft for
Rota and 5 to 8 feet, potentially reaching up to 10 to 15 feet,
for 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 Coastal Flood Warning, until 5 AM ChST Thursday.
For the High Surf Warning, until 6 PM ChST Thursday.
* IMPACTS...Numerous roads may be closed. Low lying property including
homes, businesses, and some critical infrastructure will be
inundated. Some shoreline erosion will 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. Tinian and Saipan could see wave and
wind driven surf push water level up to 10 to 15 feet higher
than the water-level, especially along windward facing beaches and
shores.
Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.
Guam; Rota; Tinian; Saipan