Weather Alerts

Typhoon Warning

Guam; Rota; Tinian; Saipan
TYPHOON WARNING IS NOW IN EFFECT

, VERY DANGEROUS CATEGORY 5 SUPER TYPHOON BAVI CONTINUES TO MOVE WEST-SOUTHWEST TOWARD THE MARIANAS, , BAVI EXPECTED TO PASS THROUGH THE SOUTHERN MARIANAS AS A SUPER TYPHOON MONDAY MORNING, .NEW INFORMATION, A Typhoon Warning has now been issued. .AREAS AFFECTED, This local statement provides important information and recommended actions for people in Guam and the Northern Marianas. .WATCHES/WARNINGS, A Typhoon Warning is now in effect for Guam, Rota, Tinian, and Saipan. Typhoon force winds of 74 mph or more are expected, with the onset of damaging winds expected within 24 to 48 hours. A Tropical Storm Watch continues for Alamagan, Pagan and Agrihan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION, At 1 PM ChST, the center of Super Typhoon Bavi (09W) was located near latitude 12.5N, longitude 151.2E. This was about 435 miles east of Guam. Storm motion was west-southwest, 255 degrees, at 8 mph. Storm intensity was 160 mph. .SITUATION OVERVIEW, A Typhoon Warning has now been issued. Super Typhoon Bavi (09W) is expected to make passage through the southern Marianas beginning Monday morning at Category 5 strength. It is expected to make a turn toward the west-northwest and gradually increase in forward speed through Sunday, when tropical storm force conditions will begin to be felt across the islands. The onset of tropical storm force conditions is currently expected late Sunday afternoon or Sunday evening. The latest forecast track still maintains passage somewhere near or to the north of Rota Island, but there is time for the track to shift north or south. All islands will experience impacts. At minimum, damaging tropical storm force conditions are expected, but damage will be catastrophic near the center of Super Typhoon Bavi, with maximum sustained winds forecast at 160 mph at time of passage. Significant flooding from torrential rains, and coastal inundation are expected. Surf will become extremely dangerous ahead of Bavi’s approach, potentially reaching 30 feet Monday. Significant coastal inundation and erosion are expected, with inundation of 10 to 15 feet possible. For the islands closest to passage of Super Typhoon Bavi, the onset of typhoon conditions is expected early Monday morning just ahead of Bavi’s center, continuing through Monday afternoon. The latest forecast from the Joint Typhoon Warning Center (JTWC) suggests that destructive typhoon conditions may be expected for 8 to 10 hours close to the center’s passage, which will depend on Bavi’s forward speed.

Stay calm and keep informed. Comply with any evacuation orders that are issued for your area. If you live in a metal roof or container home, or you live in a surge zone or any location prone to flooding, evacuate to a designated shelter or ride out the storm in the sturdy home of family or friends outside of evacuation zones. Items to bring to a shelter include a first aid kit, medicines and prescriptions, baby food and diapers, games and books, toiletries, a battery powered radio, a cell phone, flashlights with extra batteries, a blanket or sleeping bag for each person, personal identification, copies of key papers such as insurance policies, available cash and credit cards. Remember, pets are not allowed in most public shelters, so check ahead with your intended shelter. Regarding your home or business, cover all windows and doors with shutters or plywood. Move patio furniture and other loose objects indoors. Brace all exterior doors, including garage doors. Do this as early as possible. If you need to make a trip to the hardware store, the grocery store, or the gas station, do so as early as possible.

Flood Watch

Guam; Rota; Tinian; Saipan
FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TUESDAY NIGHT

What: Flooding caused by excessive rainfall continues to be possible. Where: Guam, Rota, Saipan and Tinian. When: Through late Tuesday night. Impacts: Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Addtional Details: – Shower and thunderstorm coverage will begin to increase beginning today, followed by quickly deteriorating conditions coming into tonight as rain bands from Super Typhoon Bavi begin to enter Marianas coastal waters from the east. Satellite-based estimates indicate rainfall amounts between 12 and 20 inches possible during passage of STY Bavi, especially near the center of the system. These profoundly intense showers and thunderstorms are likely to produce flash flooding across the Marianas over the coming days. – http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Coastal Flood Watch

Guam; Rota; Tinian; Saipan
COASTAL FLOOD WATCH REMAINS IN EFFECT THROUGH LATE MONDAY NIGHT

What: Significant coastal flooding. Where: North, east, and south facing shorelines of Guam, Rota, Tinian and Saipan. When: Through late Monday night. Impacts: Several roads may be closed or dangerous to cross, especially near the shores. Low lying property including homes, businesses, and some critical infrastructure may be inundated. Some shoreline erosion may occur. Addtional Details: An intensifying Super Typhoon Bavi (09W) continues to barrel toward the Marianas from the east, with coastal inundation becoming likely beginning late Sunday afternoon, potentially sooner if the system moves faster. Once the system exits to the west-northwest by Tuesday night, coastal inundation and erosion is likely to spread to west facing shores while dissipating elsewhere, but timing remains uncertain.

A coastal flood watch means that conditions favorable for flooding are expected to develop. Coastal residents should be alert for later statements or warnings…and take action to protect property.