Stronger Winds and Hazardous Seas Continue Due to Passing Tropical Disturbance


Stronger Winds and Hazardous Seas Continue Due to Passing Tropical Disturbance

The National Weather Service (NWS) Guam Weather Forecast Office issued a special weather statement for Guam, Rota, Tinian, and Saipan. A circulation centered about 205 miles south-southeast of Guam, near 11 degrees north latitude and 146 degrees east longitude, is moving west-northwest at about 16 mph and continues to slowly develop.

Breezy northeast winds of 15 to 25 mph tonight will increase early Monday, becoming east to southeast at 20 to 25 mph with near gale-force gusts of 35 mph possible near heavier showers. Winds will gradually diminish beginning Monday evening. Rainfall of 3 to 5 inches has the potential to fall over the Marianas through Tuesday night, however, locally higher amounts are possible.

The community is reminded to take the following precautionary measures:

  • Avoid driving on flooded roads;
  • 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, rivers, and creeks during heavy rainfall. These areas can flood quickly and with little warning.
  • Stay up to date with the latest information.
  • Those living in areas prone to flooding should be prepared to take action; clear drainage areas and unblock clogged storm drains in your area to minimize the chance of flooding.
  • Avoid hazardous surf and seas.


small craft advisory remains in effect for the coastal waters of Guam, Rota, Tinian, and Saipan through Tuesday afternoon. East winds of 20 to 25 knots, with near gale force gusts possible near showers, and seas of 9 to 12 feet are expected. Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


high surf advisory remains in effect for Guam, Rota, Tinian, and Saipan through Tuesday afternoon. Large breaking waves of 9 to 12 feet and dangerous rip currents along east facing reefs are expected the next two days. North facing reefs will see hazardous surf of 7 to 9 feet tonight.  

high risk of rip currents remains in effect through Tuesday afternoon. Rip currents can sweep even the best swimmers away from the shore into deeper water. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. If caught in a rip current, do not swim against the current. Swim in a direction following the shoreline, face the shore and call or wave for help. High surf will also cause localized beach erosion.

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) remind the community to avoid hazardous surf and seas until conditions subside. 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



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June 2018 is Typhoon Preparedness Month