Heavy Rainfall and Strong Winds are Possible Beginning Monday
The National Weather Service (NWS) Guam Weather Forecast Office issued a hydrologic outlook for Guam. A developing tropical disturbance, known as Invest 98W, is currently located just west-northwest of Pohnpei near 7 degrees north latitude and 157 degrees east longitude.
The current forecast shows this system will gradually organize as it heads toward the Marianas, passing through this region sometime Tuesday into Wednesday. As it approaches and passes through the area, locally heavy showers and strong wind gusts will accompany this feature.
At this time, there remains uncertainty for the exact impact the disturbance will have on the Marianas but current model guidance indicates locally heavy rainfall will develop. Between Monday evening through Wednesday afternoon, 4 to 8 inches of rainfall with locally higher amounts are possible. Strong wind gusts to 40 mph are possible with heavier showers or thunderstorms that develop. Waves may increase into the 10-to-14-foot range as fresh to strong sustained winds potentially develop, with near gale force gusts possible.
Those living in flood-prone areas should take action; clear drainage areas and unblock storm drains to minimize flooding. Residents and visitors are advised to take the following precautionary actions:
- Stay up to date with the latest information;
- Clear loose debris around your yard and store any items that may become airborne with heavy winds such as canopies, tarps and trampolines, before inclement weather arrives;
- Keep emergency preparedness kit readily available, with battery operated radio, flashlights and extra batteries;
- Secure important documents such as birth certificates, tax papers, and insurance documents and keep copies in a water-proof bag;
- Be prepared to take further action, if warranted
The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) advise the community to stay up to date with the developing situation in the coming days. Be prepared to take action through the weekend.
Visit the following links for the latest advisory information:
- NWS Website: https://www.weather.gov/gum/
- NWS Facebook: https://www.facebook.com/NWSGuam/
- GHS/OCD Website: https://ghs.guam.gov/
- GHS/OCD Facebook: https://www.facebook.com/GHSOCD/
For more information, contact GHS/OCD Public Information Officer Jenna G. Blas at (671) 489-2540 or via email at jenna.g.blas@ghs.guam.gov.