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June 2018 is Typhoon Preparedness Month

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6:35 p.m. Tropical Disturbance Continues to Track Toward Marianas

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Invest Area 90W, a tropical disturbance, located near 6N and 153E, between Chuuk and Pohnpei. 90W is anticipated to move to the west-northwest potentially taking it anywhere from over the Marianas or a passage to the south of Guam. 

Uncertainty Remains; Stay Updated for Changes 

3:35 p.m. GHS/OCD to Conduct Retest of All Hazards Alert Warning System Sirens, April 7, at 3:45 PM

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) will conduct a retest of the All Hazards Alert Warning System (AHAWS) sirens today, April 7, 2026 at 3:45 p.m.

The retest is being conducted to assess operations. Residents, visitors and motorists surrounding the  AHAWS sirens can expect to hear pre-scripted voice messaging announcing the start and end of the test, and the “Alert” tone.

11:20 a.m. Tropical Disturbance Developing Southeast of Guam to Track Toward Marianas

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Invest Area 90W, a slowly consolidating tropical disturbance, located near 4N and 160E, south-southwest of Pohnpei. 90W is anticipated to move to the west-northwest potentially taking it anywhere from the east of Guam and toward the far northern Marianas, over/near Guam, or to the south of Guam.

Uncertainty Remains on Expected Impact; Stay Updated for Changes

1:45 p.m. Wind Advisory in Effect; Practice Caution

The National Weather Service (NWS) Weather Forecast Office Guam issued an airport wind advisory, in effect for the Guam International Airport until 6 p.m. this afternoon. Winds from east-northeast at 15 to 20 knots, with frequent gusts around 25 knots are expected. Practice caution while traveling in these conditions.

For the latest advisory information, visit:

9:05 a.m. No Tsunami Threat to Marianas from Indonesia Earthquake

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 7.8 that occurred 119 km WNW of Ternate, Indonesia, with a depth of 10.0 km, at 8:48 a.m. (ChST).

As advised by the Pacific Tsunami Warning Center, there is no tsunami threat to Guam and the CNMI from this earthquake.  

This will be the final statement issued by GHS/OCD unless additional information is received.

GHS/OCD, NBG, and AAFB to Conduct Routine Testing of Advanced Warning Systems

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD), U.S. Naval Base Guam (NBG), and Andersen Air Force Base (AAFB) will conduct routine testing of the vital communication and advance warning system sirens, respectively, on Tuesday, April 7, 2026, starting at 3:15 p.m.

GHS/OCD will test the All Hazards Alert Warning System (AHAWS) sirens in conjunction with NBG and AAFB monthly routine testing of the “Giant Voice (GV)” sirens.

7:30 p.m. No Tsunami Threat to Marianas from Vanuatu Earthquake

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 7.3 that occurred 35 km NE of Luganville, Vanuatu, with a depth of 115.8 km, at 6:44 p.m. (ChST).

As advised by the Pacific Tsunami Warning Center, there is no tsunami threat to Guam and the CNMI from this earthquake.  

This will be the final statement issued by GHS/OCD unless additional information is received.

2:55 p.m. No Tsunami Threat to Marianas from Tonga Earthquake

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 7.6 that occurred 153 km W of Neiafu, Tonga, with a depth of 237.5 km, at 2:37 p.m. (ChST).

As advised by the Pacific Tsunami Warning Center, there is no tsunami threat to Guam or the CNMI from this earthquake.  

This will be the final statement issued by GHS/OCD unless additional information is received.

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