Alert USA
weather NWS severe Tinian; Saipan October 17, 2026 at 11:19 AM

Tropical Storm Warning

...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST TOWARDS GUAM COASTAL WATERS...

.NEW INFORMATION... Guam is now in Condition of Readiness 1 as of 1 PM ChST. Rota is now in Typhoon Condition of Readiness 1 as of 5 PM ChST. Saipan and Tinian remain in Typhoon Condition of Readiness 3.

.AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas.

.Watches/Warnings... A Typhoon Warning continues for Guam and Rota.

A Tropical Storm Warning and a Typhoon Watch continues for Tinian and Saipan.

A Flood Watch is in effect for Rota, Tinian and Saipan in the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area.

A Flash Flood Warning is now in effect for Guam.

Please check the latest public and marine forecasts for detailed information about additional hazards.

.STORM INFORMATION... At 7 PM ChST...the center of Typhoon Champi (29W) was located near latitude 12.6N...longitude 146.7E. This was about 140 miles east-southeast of Guam. Storm motion was west, 280 degrees, at 15 mph. Storm intensity was 130 mph. This general forecast track will take Champi just south of Guam as a Category 4 typhoon as it intensifies further the next few days.

.SITUATION OVERVIEW... Typhoon Champi (29W) has been undergoing rapid intensification today. As a result it is now a dangerous category 4 typhoon. It is expected to pass a little south of Guam as a super typhoon within the next 12 hours. This may potentially bring devastating wind conditions to much of Guam during passage.

.PRECAUTIONARY/PREPAREDNESS ACTIONS...

A hurricane or tropical storm in Tinian; Saipan brings damaging wind, heavy rain, storm surge, and the risk of extended power loss. Travel and supply runs can become difficult or impossible.

This report is based on information from NWS, monitored by Alert USA's verified emergency feed.

Alert USA anticipates a high chance of travel disruptions, elevated property risk in low-lying areas, and possible power outages while the event is active.

Recommended steps: avoid flooded roads — turn around, don't drown; move to higher ground if you are in a low-lying area; charge phones and prepare for power loss; check on family and neighbors.

Alert USA is tracking this tropical storm system and will update this report as verified information becomes available.

Verified by Alert USA • NWS

Read full story at NWS Open Alert USA
Shared via Alert USA — emergency & community news, all 50 states + 5 territories.