6:30 a.m. Hazardous Seas, Surf and Strong Rip Currents through Thursday; Heavy Rainfall Possible through Wednesday Afternoon

The National Weather Service (NWS) Weather Forecast Office Guam issued a hydrologic outlook for Guam, Rota, Tinian, and Saipan. A shear line is pushing southward near Guam and Rota, bringing showers, gusty winds and the potential for thunderstorms and locally heavy rainfall.

Numerous to widespread showers could produce 2 to 4 inches of rainfall across the Marianas, with locally higher amounts accompanying any embedded thunderstorms, particularly for Guam and Rota tonight through Wednesday morning. Flash flooding remains a possibility.

Additionally, multiple marine-related advisories are in effect due to strong winds over the coastal waters, large swell and high surf. Seas and surf are expected to build through Wednesday. Hazardous surf of 9 feet or more could potentially build to as high as 15 feet by Wednesday. Rip currents will be life-threatening.

Residents and visitors are advised to take the following precautionary actions:

Those living in flood-prone areas should take action; clear drainage areas and unblock storm drains to minimize flooding;
Stay up to date with the latest weather information;
When driving in heavy rain, be alert for low visibilities and slippery roads;
Slow down where water is ponding on the road;
Remain out of the water while advisories are in effect.

Advisories in Effect:

High Surf Advisory for Guam, Rota, Tinian, and Saipan (9–13 ft surf) until 5 p.m. Wednesday.
High Risk of Rip Currents for Guam, Rota, Tinian, and Saipan through Wednesday afternoon.
Hazardous Seas Watch for Guam, Rota, Tinian and Saipan coastal waters, through Thursday afternoon (seas 11-16 ft possible).
Small Craft Advisory for Guam, Rota, Tinian, and Saipan coastal waters (winds 20–30 kt; seas 9–14 ft) until 5 a.m. Wednesday.

For the latest advisory information, visit:

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 Public Information Officer Jenna Blas at (671) 475-9600 or via email at jenna.g.blas@ghs.guam.gov.

X Flooding is a temporary overflowing of water onto land that is normally dry. Flooding may happen with only a few inches of water, or it may cover a house to the rooftop. There are many possible causes of floods including heavy rain, coastal storms and storm surge, waterway overflow from being blocked with debris, or overflow of levees, dams, or waste water systems. Flooding can occur slowly over many days or happen very quickly with little or no warning, called flash floods.

To learn more, visit https://www.ready.gov/floods

Wildfire

Regularly clean the roof and gutters.
Maintain an area approximately 30’ away from you home that is free of anything that will burn, such as wood piles, dried leaves, newspapers and other brush.
Connect garden hoses long enough to reach any area of the home and fill garbage cans, tubs, or other large containers with water.
Review your homeowner's insurance policy and also prepare/update a list of your home's contents.

Fire Weather

Turn on your TV/radio. You’ll get the latest weather updates and emergency instructions.
Know where to go. If you are ordered to evacuate, know the route to take and have plan of where you will go. Check-in with your friends and family.
Keep your car fueled, in good condition, and stocked with emergency supplies and a change of clothes.

Drought

Conserve water

Take shorter showers.

Turn off the water while brushing your teeth or shaving.
Run the washer less frequently and only when you have a full load.
Water your lawn less frequently and do so when the temperature is cooler in the early morning or late evening.
When you run the tap to heat or cool water, keep a pitcher to store the water and use it to water plants.
Avoid washing your car.

Practice fire prevention

Don't set off fireworks when conditions are dry.
Deposit cigarette butts in the proper receptacle to avoid starting a
Pour water over camp fires and backyard fire pits to ensure they are completely out before leaving them unattended.

Follow directions from local officials. If there are restrictions on water usage, be sure to heed them.

To learn more, visit https://www.ready.gov/wildfires and https://www.ready.gov/drought

X
Typhoons/Hurricanes are massive storm systems that form over the water and move toward land. Threats from typhoons/hurricanes include high winds, heavy rainfall, storm surge, coastal and inland flooding, and rip currents.

“Hurricanes” form in the Atlantic Northeast Pacific region and “Typhoons” form in the Northwest Pacific Region. These large storms are call cyclones in other parts of the world.

To learn more, visit https://www.ready.gov/hurricanes.