The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Tropical Storm Sinlaku, formerly known as Tropical Depression 04W, as it continues slowly toward the Marianas.

What to Expect

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Invest Area 90W. As of 4 a.m., 90W was located near 9.2 degrees north latitude and 152.4 degrees east longitude, about 80 miles north of Chuuk, 570 miles east-southeast of Guam, moving northwest at 6 mph, with maximum sustained winds of 18-23 mph. It is expected to maintain this general course with an increase in forward speed in the coming days as it steadily intensifies.

What to Expect

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Invest Area 90W, a slowly consolidating tropical disturbance, located near 4N and 160E, south-southwest of Pohnpei. 90W is anticipated to move to the west-northwest potentially taking it anywhere from the east of Guam and toward the far northern Marianas, over/near Guam, or to the south of Guam.

Uncertainty Remains on Expected Impact; Stay Updated for Changes

• NWS Website: https://www.weather.gov/gum/

The National Weather Service (NWS) Weather Forecast Office Guam advised the effects of a trade-wind surge continue to affect the Marianas. The following advisories remain in effect:

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 7.8 that occurred 119 km WNW of Ternate, Indonesia, with a depth of 10.0 km, at 8:48 a.m. (ChST).

As advised by the Pacific Tsunami Warning Center, there is no tsunami threat to Guam and the CNMI from this earthquake.  

This will be the final statement issued by GHS/OCD unless additional information is received.