Tropical depression expected to pass south of Guam by sunrise Tuesday as it gradually intensifies into a tropical storm


The National Weather Service (NWS) Weather Forecast Office Guam continues to monitor Tropical Depression 06W.

As of 7 p.m., 06W was located 12.1 degrees north latitude and 146.0 degrees east longitude, about 125 miles southeast of Guam. It is currently moving west-northwest at 13 mph with maximum sustained winds of 35 mph.

On its current track, 06W is expected to pass south of Guam tonight and into Tuesday as it gradually intensifies into a tropical storm.

Sustained winds of 15 to 25 mph with gusts to 35 mph after midnight. Southeast winds will increase further early Tuesday, peaking at between 20 and 35 mph with gusts to 45 mph before subsiding late in the afternoon. Heavy showers will develop overnight with 3 to 5 inches of rainfall possible through Tuesday evening.

The following advisories remain in effect:

A tropical storm warning remains in effect for Guam, meaning tropical storm conditions, including damaging winds of 39 mph or more, are expected early Tuesday morning through Tuesday afternoon.

A tropical storm watch remains in effect for Rota coastal waters until 10 a.m. Wednesday. East to southeast winds 15 to 25 kt with gusts up to 35 kt and seas of 7 to 11 feet are expected. Strong winds and hazardous seas could capsize or damage vessels.

A small craft advisory is in effect for Rota coastal waters until 10 a.m. Wednesday. Strong winds and hazardous seas could capsize or damage vessels. Mariners should consider altering plans to avoid possible hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe wind and seas.

A flash flood watch is in effect for Guam, Rota, Tinian, and Saipan through Tuesday evening. Torrential rains could lead to flash flooding in low-lying and poor-drainage areas. Seas and winds will steadily increase tonight as Tropical Depression 06W approaches Guam. Strongest winds and highest seas are expected Tuesday before gradually subsiding Tuesday night.

A high surf advisory is in effect for Guam, Rota, Tinian, and Saipan until 10 a.m. Wednesday morning. Hazardous surf of 9 to 12 feet is expected for east and south facing reefs of the Marianas, producing dangerous swimming and surfing conditions and localized beach erosion.

Prepare Now

Be prepared to take action if flood advisories are issued. In inclement weather, avoid camping, parking, or hiking along streams, rivers, and creeks during heavy rainfall. These areas can flood quickly and with little warning. Visit to learn more.

The community is reminded to prepare for any circumstance and take the following precautionary measures now:

Once inclement weather arrives, practice caution on the roadways or only travel if necessary.

Stay out of the water.

Stay up to date with the latest information. The system track or intensity may change and advisories may be issued.

Locate or prepare your emergency preparedness kits for your household; stock up on non-perishable food items and water for your household, flashlights, first-aid kits, batteries, matches or lighters, portable stove, toiletries, etc. Visit for more information on what to include in your supplies list.

Secure important documents such as birth certificates, tax papers, and insurance documents and keep copies in a water-proof bag.

Clear loose debris around your yard and store any items such as tents and canopies, that may become airborne with heavy winds, before inclement weather arrives.

Gas your vehicles and get fuel for your generators now while the weather is clear.

Visit the following links for the latest advisory information:

NWS Website:

NWS Facebook:

GHS/OCD Website:

GHS/OCD Facebook:

For more information, contact the Joint Information Center at (671) 478-0208/09/10.