Tropical Storm Watch in effect for Guam and Rota; take necessary precautions

Tropical Storm Watch in effect for Guam and Rota; take necessary precautions

by Offices of Homeland Security and Civil Defense
Stripes Guam

At 8 a.m., the National Weather Service (NWS), Weather Forecast Office Guam, has issued a Tropical Storm Watch for Guam and Rota and coastal waters as Tropical Depression 27W moves westward.

As of 7 a.m., 27W was located 9.3 degrees north latitude and 147.4 degrees east longitude, about 340 miles south-southeast of Guam and 415 miles south-southeast of Saipan. 27W has maximum sustained winds of 35 mph, moving west at 8 mph. Some gradual intensification of 27W is expected Tuesday and Wednesday. With the current track, 27W may have wind speeds of 45 mph by the time it passes Guam.

The current forecast track anticipates Tropical Depression 27W passing south of Guam on Tuesday. Keep in mind, there is still much uncertainty on how close the system will pass to Guam or locations in Chuuk state so the system is being monitored closely for any changes in motion or intensity.

Due to the uncertainty of exactly how close to Guam 27W will pass, it is advised to take basic precautionary actions now. To be prepared for any scenario with 27W, residents and visitors are advised to:

- Locate or prepare your emergency preparedness kits for your household

- Clear loose debris around your yard and store any items that may become airborne with heavy wind

- Gas your car and get fuel for your generators

- Stay up to date in the event there are changes with 27W or updates to changes in Conditions of Readiness

A hazardous seas warning is in effect for Rota, Tinian and Saipan coastal waters until 6 p.m. this evening. A small craft advisory is also in effect for Rota, Tinian and Saipan coastal waters from 6 p.m. this evening to 6 p.m. Wednesday. Guam’s small craft advisory remains in effect until 6 p.m. Wednesday, with seas of 10 to 13 feet. Winds will increase to between 24 and 34 mph early Tuesday. For Rota, Tinian and Saipan coastal waters, seas of 12 to 15 feet will continue today and remain hazardous through Wednesday night. Today, recreational boaters should remain in port or take shelter until waves subside. Commercial vessels should prepare for rough seas and consider remaining in port of taking shelter in port until hazardous seas subside. Tonight, inexperienced mariners, especially those operating smaller vessels, should avoid sailing in these conditions.

A high surf warning is in effect for Guam, Rota, Tinian, and Saipan until 6 p.m. this evening along west facing reefs. A high surf warning indicates that dangerous, battering waves will pound the shoreline, resulting in life- threatening conditions. For west facing reefs, dangerous surf of 12 to 15 feet will continue through the day. Minor coastal inundation around 1 to 2 feet is possible around times of high tide. Although surf will diminish, it will remain hazardous through Wednesday.

A high surf advisory remains in effect for Guam, Rota, Tinian, and Saipan until 6 p.m. Wednesday, for north facing reefs. For north facing reefs, hazardous surf of 10 to 12 feet will persist through Tuesday, before slowly subsiding Wednesday.

Residents and visitors are advised to avoid venturing out on exposed reefs and beaches, especially those facing north, south and west, as rip currents will be life-threatening.

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) remind all residents and visitors to practice extreme caution if traveling in these conditions or if near the ocean.

Visit the following links for the latest advisory information:

- NWS Website:

- NWS Facebook: https:

- GHS/OCD Facebook:

For more information, contact GHS/OCD Public Information Officer, Jenna G. Blas at (671) 478-0208 or via email at

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