The National Weather Service Guam Weather Forecast Office issued a special weather statement for Guam, Rota, Tinian, and Saipan. 

A slow-developing tropical disturbance, known as Invest 97W, is centered west of the Marianas and expected to bring heavy showers and gusty conditions late this week, into the weekend.

Gradual development of this system is expected in the next few days, though there is still uncertainty on its eventual motion. Extensive rainfall, increasing winds, and strong to near-gale force gusts are expected to portions of the Marianas by the weekend.

A flood watch remains in effect through late Sunday night. Rainfall amounts of 5 to 10 inches, and flash flooding caused by excessive rainfall are possible. 

Those living in flood-prone areas should take action; clear drainage areas and unblock storm drains to minimize flooding. 

Residents and visitors are advised to take the following precautionary actions:

  • Be aware of your surroundings and do not drive on flooded roads.
  • If driving, be alert for low visibilities in heavy rain;
  • Slow down where water is ponding on the road;
  • Turn Around, Don’t Drown. Avoid walking or driving through flood waters. Just 6 inches of moving water can knock you down, and 2 feet of water can sweep your vehicle away;
  • Do not camp, park, or hike along streams and rivers. These areas can flood quickly and with little warning.