Heavy Rain and Gusty Winds Late Saturday Night through Monday


Heavy Rain and Gusty Winds Late Saturday Night through Monday

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor a tropical system, Invest Area 98 W, which is expected to lift slowly north as it tracks roughly parallel to the Marianas, west of the coastal waters.

Heavy rainfall is the main concern, with potential for 4 to 8 inches of rainfall, with locally higher amounts. Additionally, stronger winds on the northern and eastern flanks of the system may give Guam sustained winds of 25 to 35 mph, with gusts to 45 mph possible with any heavier shower or thunderstorm that develops.

A flood advisory remains in effect for Guam until 10:30 a.m. Between 1 and 3 inches of rain has already fallen. Additional rainfall amounts of 1 to 2 inches is expected, resulting in minor flooding.

Residents and visitors are advised to take the following precautionary actions:
  • If driving, be alert for low visibilities and slippery roads 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.

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) remind the community to practice caution while traveling in rainy conditions, driving below the speed limit and allowing enough braking distance between vehicles.

Visit the following links for the latest advisory information:
For more information, contact GHS/OCD Public Information Officer Jenna G. Blas at (671) 489-2540 or via email at jenna.g.blas@ghs.guam.gov.



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June 2018 is Typhoon Preparedness Month