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June 2018 is Typhoon Preparedness Month

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High Surf Advisory and High Risk of Rip Currents in Effect

The National Weather Service (NWS) Guam Weather Forecast Office has the following advisories in effect:

high surf advisory remains in effect for Guam, Rota, Tinian, and Saipan from 6 a.m. Wednesday to 6 a.m. Thursday along north facing reefs. Large breaking waves of 7 to 9 feet, dangerous swimming and surfing conditions, and localized beach erosion are expected.

No Tsunami Threat to Marianas from Japan Earthquake

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 7.5 that occurred 42 km NE of Anamizu, Japan with a depth of 10.0 km, at 5:10 p.m. (ChST).

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

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

Flood Advisory in Effect; Drive with Caution

The National Weather Service (NWS) Guam Weather Forecast Office advised shower coverage will remain elevated for Guam from tonight through New Year’s Day. Breezy conditions will remain through tonight.

An urban and small stream flood advisory is in effect until midnight for southern and central Guam. Heavy rain over and east of Guam will cause urban and small stream flooding. Between 0.5 and 1 inch of rain has already fallen. Additional rainfall amounts of 0.5 to 1 and a half inches are expected through midnight.

High Risk of Rip Currents and Small Craft Advisory Expected through the Weekend

The National Weather Service (NWS) Guam Weather Forecast Office advised a high risk of rip currents will be in effect for Guam, Rota, Tinian, and Saipan from 6 p.m. this evening through Sunday night for east facing reefs of the Marianas. 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 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.  

AHAWS Siren from Ft. Soledad, Umatac Not Connected to Emergency

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) received reports of the All Hazards Alert Warning System (AHAWS) siren from the Ft. Soledad, Umatac location sounding of the siren this morning and continuing.

The Umatac AHAWS siren is NOT connected with any emergency situation and assessments are being made on the system. Future tests of the AHAWS sirens will be conducted on a monthly basis and will typically fall on the first Tuesday of each month, unless it falls on an observed holiday.

Hazardous Surf and Seas Remain

The National Weather Service (NWS) Guam Weather Forecast Office advised a surge in the trade winds will bring breezy conditions through tonight with gusts to 20 to 35 mph possible, especially in showers. The following advisories remain in effect:

A high surf advisory remains in effect for Guam, Rota, Tinian, and Saipan until 6 a.m. Monday. Large breaking waves of 9 to 12 feet are expected for east facing reefs of the Marianas. Remain out of the water due to dangerous surf conditions.

No Immediate Threat to Marianas Assessed from Reported North Korea Launch

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD), in conjunction with the Mariana Regional Fusion Center (MRFC), federal and military partners, continue to monitor events surrounding the region including reports of the recent launch of an unidentified projectile out of the Democratic People’s Republic of Korea (DPRK) today. 

GHS/OCD to Conduct AHAWS Siren Test to Assess Operations

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) will conduct a test of the All Hazards Alert Warning System (AHAWS) sirens on Tuesday, December 19, 2023, starting at 3:15 p.m. 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 sixty-seconds of the “Alert” siren tone.

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