Active Weather Alerts
Typhoon Warning
Issued: 11:02 AM Jul. 5, 2026 – National Weather Service
...TYPHOON WARNING REMAINS IN EFFECT... * WHAT...A Typhoon Warning remains in effect through at least Tuesday night. * WHERE...Marianas Coastal Waters. * WHEN...Damaging winds expected from through early Tuesday morning. Destructive typhoon force winds expected early Monday morning through Monday afternoon with the passage of Super Typhoon Bavi. * IMPACTS...Sustained winds of near 140 kt with gusts to 170 kt near the center. Seas of up to 45 feet near the storm center. * ADDITIONAL DETAILS...Typhoon conditions, including winds of 64 knots or more, are expected within the next 24 hours as Super Typhoon Bavi (09W) approaches the Marianas. Bavi is maintaining strength at high-end Category 4 to low Category 5. However, there is still uncertainty as to which islands will receive the strongest impacts due to irregular longitudinal shifts in motion. The latest model guidance continues to indicate a path near or just north of Rota, but the forecast track will likely continue to have minor track shifts during the next 24 hours. All of the islands will see impacts. The islands closest to the storm center passage will experience significantly worse conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Prepare for the imminent passage of a strong typhoon Monday morning. Damaging winds are expected late this afternoon through late Monday night. Secure all vessels. Conditions are expected to be catastrophic for small craft, and extremely dangerous for any vessels of larger size. As Super Typhoon Bavi approaches, stay in safe harbor. &&
Coastal Flood Warning
Issued: 11:02 AM Jul. 5, 2026 – National Weather Service
...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 4 PM CHST WEDNESDAY... ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 4 PM CHST THURSDAY... * WHAT...For the Coastal Flood Warning, significant coastal flooding. For the High Surf Warning, dangerously large breaking waves of 25 to 35 feet in the surf zone. * WHERE...Guam, Rota, Tinian and Saipan. * WHEN...For the Coastal Flood Warning, until 4 PM ChST Wednesday. For the High Surf Warning, until 4 PM ChST Thursday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Significant shoreline erosion will occur. Waters will be deadly. * ADDITIONAL DETAILS...Hazardous surf levels will rapidly build to dangerous levels along north, east, and south facing reefs this evening as Super Typhoon Bavi approaches the Marianas from the east and tropical storm force conditions develop, spreading to west facing reefs soon after. Surf will potentially build to 35 feet Monday morning near Rota and 30 feet elsewhere as Bavi makes its passage through the islands likely as a Category 5 Super Typhoon. Coastal inundation will become likely this evening, During the passage of Bavi, coastal inundation could approach 12 feet, especially near the storm center due to the dome effect. Once Bavi exits to the west-northwest by Tuesday, coastal inundation and erosion is likely to increase along west facing shores while easing elsewhere. PRECAUTIONARY/PREPAREDNESS ACTIONS... Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. &&
High Surf Warning
Issued: 11:02 AM Jul. 5, 2026 – National Weather Service
...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 4 PM CHST WEDNESDAY... ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 4 PM CHST THURSDAY... * WHAT...For the Coastal Flood Warning, significant coastal flooding. For the High Surf Warning, dangerously large breaking waves of 25 to 35 feet in the surf zone. * WHERE...Guam, Rota, Tinian and Saipan. * WHEN...For the Coastal Flood Warning, until 4 PM ChST Wednesday. For the High Surf Warning, until 4 PM ChST Thursday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Significant shoreline erosion will occur. Waters will be deadly. * ADDITIONAL DETAILS...Hazardous surf levels will rapidly build to dangerous levels along north, east, and south facing reefs this evening as Super Typhoon Bavi approaches the Marianas from the east and tropical storm force conditions develop, spreading to west facing reefs soon after. Surf will potentially build to 35 feet Monday morning near Rota and 30 feet elsewhere as Bavi makes its passage through the islands likely as a Category 5 Super Typhoon. Coastal inundation will become likely this evening, During the passage of Bavi, coastal inundation could approach 12 feet, especially near the storm center due to the dome effect. Once Bavi exits to the west-northwest by Tuesday, coastal inundation and erosion is likely to increase along west facing shores while easing elsewhere. PRECAUTIONARY/PREPAREDNESS ACTIONS... Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. &&
Flood Watch
Issued: 10:59 AM Jul. 5, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TUESDAY NIGHT... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Guam, Rota, Tinian and Saipan. * WHEN...Through late Tuesday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Shower and thunderstorm coverage will continue tonight, followed by quickly deteriorating conditions into tonight as rain bands from Super Typhoon Bavi continue to enter the 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 PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
Typhoon Warning
Issued: 10:56 AM Jul. 5, 2026 – National Weather Service
...TYPHOON WARNING REMAINS IN EFFECT... ...PRECAUTIONARY/PREPAREDNESS ACTIONS... Preparations for damaging winds should already be complete. Damaging winds are imminent! Remain in safe shelter until the all clear is given Monday. && ...WIND INFORMATION...; As Super Typhoon Bavi (09W) approaches, sustained tropical storm; force winds are expected to begin over the next few hours. Maximum; winds are forecast to be in the 50 to 60 mph range with gusts to; 80 mph.; ...COASTAL INUNDATION AND SURF INFORMATION...; Storm surge could reach up to 2 feet, with another 5 to 10 feet of; wind- and wave-driven run-up. Additionally, surf could reach peak; heights between 15 and 25 feet as Bavi passes to the north Monday; morning.; ...OTHER STORM EFFECTS...; A Flood Watch is in effect for the entire area. See latest; forecast for latest information. Listen for possible flood; warnings for your location...and be ready to act if flooding; rains occur. Intense showers and thunderstorms could produce; flooding across the island with potential for mudslides.; There could be accumulations of 10 to 14 inches of rainfall through; Tuesday.
Flood Advisory
Issued: 10:14 AM Jul. 5, 2026 – National Weather Service
...FLOOD ADVISORY IN EFFECT UNTIL 1115 PM CHST THIS EVENING... * WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...Guam... Rota... * WHEN...Until 1115 PM ChST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 814 PM ChST, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 0.6 and 1.2 inches of rain have fallen. - Additional rainfall amounts of 1.2 to 1.6 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Dededo, Tamuning, Yigo, Mangilao, Chalan Pago-Ordot, Barrigada, Yona, Hagatna Heights, Andersen AFB, Talofofo, Mongmong-Toto-Maite, Sinajana, Inarajan, Asan, Merizo, Piti, Santa Rita, Umatac, Sinapalo and Songsong. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. &&
Airport Weather Warning
Issued: 11:14 PM Jul. 4, 2026 – National Weather Service
An Airport Wind Advisory is in effect for the Guam International Airport. The onset of tropical storm force conditions are expected within 12 hours and this advisory will remain in effect until further notice. Expect winds from the N/NNE or 350 to 20 degrees around 15 to 25 knots with gusts up to 40 knots and winds will continue to increase and shift to the west as Super Typhoon Bavi approaches from the east. Tropical storm conditions are expected by this evening through at least Monday night, with typhoon conditions possible Monday morning through Monday afternoon. In addition to increasing winds and gusts, thunderstorm coverage will continue to increase over the next 24 hours. Lightning will be likely within 5 to 20 nautical miles of the airport, with occasional to frequent lightning occurring. For specific wind information and updates, see the latest typhoon local statement, under WMO header WTPQ31 PGUM or on our website at: www.weather.gov/gum/cyclones.
Local Radar