TINIAN COASTAL WATERS; SAIPAN COASTAL WATERS — * WHAT...Tropical storm conditions, including winds of 34 to 63 knots, are expected. Typhoon conditions, including winds of 64 knots or more are possible within the next 48 hours.
* WHERE...Tinian and Saipan Coastal Waters.
* WHEN...Onset of damaging winds beginning Saturday night, continuing into at least Sunday night, possibly longer if conditions warrant.
* IMPACTS...Destructive winds will produce dangerous seas that could damage, capsize or sink vessels, along with drastically reducing visibilities in heavy rain.
* ADDITIONAL DETAILS...Tropical Storm Champi (29W) continues to move quickly toward the Marianas. The exact path of 29W remains subject to change. However, guidance supports a passage through Guam coastal waters, with damaging winds moving into Tinian and Saipan Saturday night and lasting into at least Sunday night. Champi is expected to strengthen further today and Saturday as it approaches, then move through the region as a typhoon Sunday morning. Seas will quickly rise, with significant sea heights reaching as high as 25 feet during closest passage of Champi. Dangerous sea conditions may continue into Monday.
A hurricane or tropical storm in Tinian Coastal Waters; Saipan Coastal Waters brings damaging wind, heavy rain, storm surge, and the risk of extended power loss. Travel and supply runs can become difficult or impossible.
This report is based on information from NWS, monitored by Alert USA's verified emergency feed.
Alert USA anticipates a high chance of travel disruptions, elevated property risk in low-lying areas, and possible power outages while the event is active.
Recommended steps: avoid flooded roads — turn around, don't drown; move to higher ground if you are in a low-lying area; charge phones and prepare for power loss; check on family and neighbors.
Alert USA is tracking this tropical storm system and will update this report as verified information becomes available.
Verified by Alert USA • NWS