412 WTPQ82 PGUM 160611 HLSPQ2 URGENT - IMMEDIATE BROADCAST REQUESTED Tropical Storm Champi (29W) Local Statement National Weather Service Tiyan GU 411 PM ChST Fri Oct 16 2026 ...TROPICAL STORM CHAMPI MOVING RAPIDLY WEST ON APPROACH TO THE MARIANAS... ...CHAMPI LIKELY TO MOVE NEAR GUAM AND ROTA AS A TYPHOON... .NEW INFORMATION... A Typhoon Warning has been issued for Guam, Rota, and the adjacent waters. A Tropical Storm Warning has been issued for Tinian, Saipan, and the adjacent waters. .AREAS AFFECTED... This local statement provides information and recommended action for people on Guam, and people on Rota, Tinian and Saipan in the Commonwealth of the Northern Marianas. .WATCHES/WARNINGS... A Typhoon Warning is in effect for Guam and Rota. A Tropical Storm Warning is in effect for Tinian and Saipan. A Typhoon Watch continues for Tinian and Saipan. 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 200 PM ChST, the center of Tropical Storm Champi (29W) was located near latitude 11.4N and longitude 153.3E, about 300 miles north- northeast of Chuuk and about 590 miles east-southeast of Guam. Storm motion was west, 265 degrees, at 24 mph. Storm intensity was 50 mph. Champi will continue on this trajectory and slow down as it continues barreling toward the Marianas. This general forecast track will take Champi close to, or over, Guam Sunday morning. Champi is forecast to continue intensifying over the next few days, likely becoming a typhoon by Saturday. .SITUATION OVERVIEW... Mostly benign conditions are expected across the Marianas tonight, followed by a steady increase in showers and winds Friday afternoon, and then deteriorating significantly coming into Saturday night as Tropical Storm Champi continues to move in from the east-southeast. Champi is expected to go through a period of rapid intensification over the next 24 hours, becoming a typhoon by Saturday and strengthening further thereafter. Winds and rain will come in rapidly, with winds becoming dangerous and life threatening very soon after onset. Do not let a false sense of normalcy now dictate your actions tomorrow; prepare NOW! .PRECAUTIONARY/PREPAREDNESS ACTIONS... For those under a Typhoon Warning, preparations should have already been completed or should be completed very soon. Remain in a sturdy shelter until local officials give the all clear. For those under a Tropical Storm Warning, preparations according to your typhoon disaster plan shall be completed as soon as possible for your home or business. Heed the advice of local officials and comply with any orders that are issued. For those under a Typhoon Watch, now is the time to begin preparing your home or business according to your typhoon disaster plan. Listen for possible warnings and be ready to evacuate if necessary. Heed the advice of local officials and comply with any orders that are issued. For those under a Tropical Storm Watch, now is the time to to make sure all loose items are secured. Be ready to act and take stronger protection efforts in the event that a warning is issued with later forecasts. For interests at ports, docks, and marinas, it is recommended that you perform the prescribed preparations according to your emergency operations plan for tropical cyclones. If you live on a boat, begin to safely secure your craft and make plans to leave it for adequate land based shelter. Listen for possible warnings. Be aware of the latest port conditions from the local port authority and from the United States Coast Guard. Regarding the coastal waters under a Watch, small craft should return to port or seek safe harbor. Closely monitor NOAA weather radio or other local news outlets for official storm information. Listen for possible changes to the forecast. For additional precautionary and preparedness information, please refer to the detailed recommendations relative to your location as further described by your local National Weather Service office, and your local emergency management. && .NEXT UPDATE... The next local statement will be issued by the National Weather Service in Tiyan, Guam around 9 PM ChST or sooner, if conditions warrant. GUZ001-161415- /O.UPG.PGUM.TY.A.4029.000000T0000Z-000000T0000Z/ /O.NEW.PGUM.TY.W.4029.261016T0611Z-000000T0000Z/ Guam- 411 PM ChST Fri Oct 16 2026 ...TYPHOON WARNING IN EFFECT... .PRECAUTIONARY/PREPAREDNESS ACTIONS... Take small loose objects indoors. Identify suitable shelter. Stock up a few days worth of food and water. If no concrete shelter is available look for a cave or something similar. Take action to protect food crops or other possessions as appropriate. && ...WIND INFORMATION... 15 to 20 mph north winds Saturday, are expected to increase significantly as Champi approaches, with northeast to east tropical storm-force winds of 60 to 70 mph with gusts to 80 mph developing quickly coming into Saturday night. Then, winds will pivot to the northeast immediately during closest point of approach, then shift quickly to the southwest, with typhoon-force winds of 90 to 105 mph with gusts to 150 mph expected Sunday, decreasing back down to tropical storm-force Sunday night as Champi continues to exit to the northwest at that time. Significant damage to many metal roof homes is likely. Poorly constructed homes are likely to sustain complete roof removal, with significant wall damage. Flying and falling debris will pose a significant threat to life, or even death, to those venturing outside. Signage, some fences and canopies are likely to be destroyed. Island-wide power outages are likely, potentially for days, as power lines and power plants sustain damage. These power outages are likely to turn of public utility water pumps, so water outages may develop across the islands if power outages continue for days. Shutters MUST be used for non-typhoon-resistant windows, as they may shatter and pose a life threatening risk to those both outside and inside during the passage of Champi. ...COASTAL INUNDATION AND SURF INFORMATION... 7 to 9 foot surf is expected to increase significantly beginning late Saturday afternoon, with dangerously large breaking waves upwards of 26 feet expected to develop along all shores of Guam Sunday. In addition, significant coastal inundation upwards of 5 to 7 feet is expected especially along eastern and southern exposures as Champi approaches. If Champi continues on its current track and crosses over or near Guam, 1 to 3 feet of coastal inundation, as well as significant wave run up, is expected to build in along west exposures, especially around inlets of Apra Harbor. ...OTHER STORM EFFECTS... As Champi continues to intensify and eventually become a typhoon prior to moving across the Marianas, torrential rain could dump 12 to 20 inches of rain at Guam over the duration of the event, especially if the center moves over or near Guam. Excessive runoff may result in flooding of rivers, creeks, streams, and other low- lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Extensive street flooding and flooding of creeks and rivers are possible. $$ MPZ001-161415- /O.UPG.PGUM.TY.A.4029.000000T0000Z-000000T0000Z/ /O.NEW.PGUM.TY.W.4029.261016T0611Z-000000T0000Z/ Rota- 411 PM ChST Fri Oct 16 2026 ...TYPHOON WARNING IN EFFECT... .PRECAUTIONARY/PREPAREDNESS ACTIONS... Take small loose objects indoors. Identify suitable shelter. Stock up a few days worth of food and water. If no concrete shelter is available look for a cave or something similar. Take action to protect food crops or other possessions as appropriate. && ...WIND INFORMATION... 20 to 25 mph north winds Saturday, are expected to increase significantly as Champi approaches, with southeast tropical storm- force winds of of 50 to 60 mph with gusts to 80 mph developing quickly coming into Saturday night. Then, winds will pivot to the southeast and south and increasing typhoon-force winds of 60 to 80 mph with gusts to 115 mph Sunday, decreasing back down to tropical storm-force Sunday night as Champi continues to exit to the northwest at that time. Moderate to significant damage to many metal roof homes is likely, especially those that have canopies, awnings, or carports. Poorly constructed homes are likely to sustain partial to complete roof removal, with major wall damage. Flying and falling debris will pose a significant threat to life, or even death, to those venturing outside. Signage, some fences and canopies are likely to be destroyed. Island-wide power outages are likely, potentially for days, as power lines and power plants sustain damage. These power outages are likely to turn of public utility water pumps, so water outages may develop across the islands if power outages continue for days. Shutters MUST be used for non-typhoon-resistant windows, as they may shatter and pose a life threatening risk to those both outside and inside during the passage of Champi. ...COASTAL INUNDATION AND SURF INFORMATION... 7 to 9 foot surf is expected to increase significantly beginning late Saturday afternoon, with dangerously large breaking waves upwards of 20 feet expected to develop along all shores of Rota Sunday. In addition, significant coastal inundation upwards of 3 to 4 feet is expected especially along eastern and southern exposures as Champi approaches. If Champi's storm track shifts northward, 1 to 3 feet of coastal inundation, as well as significant wave run up, is expected to build in along west and south exposures. ...OTHER STORM EFFECTS... As Champi continues to intensify and eventually become a typhoon prior to moving across the Marianas, torrential rain could dump 10 to 18 inches of rain at Rota over the duration of the event, especially if the center moves closer to Rota. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Extensive street flooding and flooding of creeks and rivers are possible. $$ MPZ002-003-161415- /O.NEW.PGUM.TR.W.4029.261016T0611Z-000000T0000Z/ /O.CON.PGUM.TY.A.4029.000000T0000Z-000000T0000Z/ Tinian-Saipan- 411 PM ChST Fri Oct 16 2026 ...TROPICAL STORM WARNING IN EFFECT... ...TYPHOON WATCH REMAINS IN EFFECT... .PRECAUTIONARY/PREPAREDNESS ACTIONS... Take small loose objects indoors. Identify suitable shelter. Stock up a few days worth of food and water. If no concrete shelter is available look for a cave or something similar. Take action to protect food crops or other possessions as appropriate. && ...WIND INFORMATION... 25 to 30 mph northeast winds Saturday, are expected to increase as Champi approaches, with east to southeast tropical storm-force winds of 40 to 50 mph with gusts to 70 mph developing coming into Saturday night. Then, winds will pivot to the southeast and increase to 40 to 60 mph with gusts to 80 mph Sunday, decreasing back down to 30 to 50 mph with gusts to 70 mph Sunday night as Champi continues to exit to the northwest at that time. Minor to moderate damage to some metal roof homes is possible, especially those that have canopies, awnings, or carports. Poorly constructed homes are likely to sustain some wall damage. Flying and falling debris may cause injuries to those venturing outside. Signage, some fences and canopies may be damaged significantly. SCattered to island-wide power outages are possible, as power lines sustain damage. These power outages are likely to turn of public utility water pumps, so water outages may develop across the islands if power outages continue for days. Shutters MUST be used for non- typhoon-resistant windows, as they may shatter and pose a life threatening risk to those both outside and inside during the passage of Champi. ...COASTAL INUNDATION AND SURF INFORMATION... 7 to 9 foot surf is expected to increase significantly beginning late Saturday afternoon, with dangerously large breaking waves upwards of 18 feet expected to develop along eastern and southern shores of Tinian and Saipan Sunday. In addition, significant coastal inundation upwards of 2 to 3 feet is expected as Champi approaches. If Champi's storm track shifts northward, 1 to 3 feet of coastal inundation, as well as significant wave run up, is expected to build in along west and south exposures. ...OTHER STORM EFFECTS... As Champi continues to intensify and eventually become a typhoon prior to moving across the Marianas, torrential rain could dump 8 to 12 inches of rain at Tinian and Saipan over the duration of the event, especially if outer rainbands form and train over Tinian and Saipan. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Extensive street flooding and flooding of creeks and rivers are possible. $$ Montvila