ALT This graphic displays a special weather statement plotted on a map. The statement is in effect until 12:30 PM ChST. The statement includes Dededo GU, Yigo GU and Tamuning GU. A STRONG THUNDERSTORM WILL IMPACT CENTRAL AND NORTHERN GUAM THROUGH 1230 PM CHST. The threats associated with this storm are wind gusts up to 40 MPH and no hail is expected. Seek shelter in a sturdy structure until the storm passes.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 12:45 PM ChST. The warning includes Guam coastal waters and Rota coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are not expected. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 12:00 PM ChST. The warning includes Guam coastal waters and Rota coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are not expected. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 11:15 AM ChST. The warning includes Guam coastal waters and Rota coastal waters. The threats associated with this warning are wind gusts greater than 49kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT This graphic displays a special weather statement plotted on a map. The statement is in effect until 11:00 AM ChST. The statement includes Rota MP. A STRONG THUNDERSTORM WILL IMPACT ROTA THROUGH 1100 AM CHST. The threats associated with this storm are wind gusts up to 55 MPH and no hail is expected. Seek shelter in a sturdy structure until the storm passes.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 10:30 AM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts greater than 49kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT FLOOD ADVISORY IN EFFECT FOR GUAM UNTIL 12:15 PM CHST Valid as of 9:19 AM ChST on Monday, October 19, 2026 At 9:19 AM ChST, Doppler radar indicated heavy rain due to thunderstorms. Between 0.5 to 1 inch of rain has fallen. Additional rainfall amounts of 1 to 3 inches are expected over the area. This will cause minor flooding of small streams, low-lying and poor drainage areas, and roadways. Turn around, don’t drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. For more information, visit weather.gov/gum.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 7:30 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 7:15 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 7:15 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 7:00 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are not expected. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 6:45 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT This graphic displays a special marine warning plotted on a map. The warning is in effect until 6:45 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are observed. Steep waves can be expected. Seek safe harbor and take protective actions.

ALT NWS graphic issued Sunday, October 18, 2026, at 4:50 PM ChST stating "TY Champi (29W): ALL TYPHOON WARNINGS CANCELLED." Flooding concerns continue through tonight for Guam and Rota, with hazardous winds and waters for all of the Marianas. A satellite loop on the left shows the storm moving west away from the islands. Key Points state Typhoon Warning CANCELLED for Guam and Rota, though winds, seas, and surf remain dangerous. Impacts include possible flooding through tonight for Guam (2 to 4 inches) and Rota (1 to 3 inches); strong winds of 25 to 35 MPH with gusts to 45 MPH for all islands; combined seas of 12 to 16 FT for Guam/Rota and 10 to 14 FT for Tinian/Saipan; and high surf with dangerous rip currents on east, south, and west facing reefs for Guam/Rota, and east and south facing reefs for Tinian/Saipan. Suggested Action: Wait for an "ALL CLEAR" from local authorities.

ALT This graphic displays a flash flood warning plotted on a map. The warning is in effect until 7:30 AM ChST. The warning includes Dededo GU, Yigo GU and Tamuning GU. Avoid walking or driving through flood waters! Move immediately to higher ground! There are people in the warning along with 44 schools and 2 hospitals.

ALT Sunday, October 18, 2026. 3:52 AM ChST Typhoon Champi (29W) The National Weather Service in Tiyan Guam has issued a * Extreme Wind Warning for... Southern Guam in Guam... * Until 530 AM ChST.

ALT This graphic displays a extreme wind warning plotted on a map. The warning is in effect until 5:30 AM ChST. The warning includes Inarajan GU. The threats associated with this warning are a for extremely dangerous hurricane winds. Treat these imminent extreme winds as if a tornado was approaching and move immediately to an interior room or shelter NOW!. There are people in the warning along with 6 schools and 0 hospitals.

ALT This graphic displays a flash flood warning plotted on a map. The warning is in effect until 5:30 AM ChST. The warning includes Dededo GU, Yigo GU and Tamuning GU. Avoid walking or driving through flood waters! Move immediately to higher ground! There are people in the warning along with 44 schools and 2 hospitals.

ALT Typhoon Champi (29W): Rapidly Intensified to Category 4 (140 MPH) Valid as of 1:12 AM ChST on Sunday, October 18, 2026 Champi forecast to pass barely south of Guam with winds of 150 mph.

ALT This graphic displays a flash flood warning plotted on a map. The warning is in effect until 3:30 AM ChST. The warning includes Dededo GU, Yigo GU and Tamuning GU. Avoid walking or driving through flood waters! Move immediately to higher ground! There are people in the warning along with 44 schools and 2 hospitals.