Typhoon Warning issued October 18 at 3:01PM ChST by NWS Tiyan GU

Official severe-weather alerts, warning areas, and disaster updates.

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...SUPER TYPHOON CHAMPI CONTINUES WEST, AWAY FROM GUAM WATERS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in Guam and the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. Although tropical cyclone watches or warnings are not in effect for Tinian and Saipan, possible impacts from related hazards are still a concern. A Flood Watch is in effect for portions 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 2 PM ChST...the center of Super Typhoon Champi (29W) was located near latitude 13.0N...longitude 142.6E. This was about 150 miles west of Guam. Storm motion was west, 260 degrees, at 12 mph. Storm intensity was 150 mph. .SITUATION OVERVIEW... Super Typhoon Champi continues to move generally westward with a slight southward turn over the last few hours, and a slight decrease in forward speed. The eye remains very small and compact, appearing to fill in with cloud cover in the latest visible satellite imagery, with a width of around 5 miles across. It looks to be going through an eyewall replacement cycle. GLD network data shows frequent lightning within the deep convection along the southern eyewall, which is beginning to exit radar range. Surface observations from Guam International Airport show strong sustained winds of 25 to 30 mph with frequent tropical storm-force gusts up to 60 mph. At Saipan, winds are fresh to strong with gusts to 35 mph. As frequent damaging tropical storm-force gusts continue, do not go outside to check for damage or to implement temporary repairs, even as sustained winds diminish through the next few hours. Occasional strong tropical storm-force gusts will maintain dangerous conditions outdoors. Do not open the doors of your home or shelter until high winds fully subside. Wait for the all-clear signal. Passing showers will bring very strong gusts without warning.

Event time

Oct 18, 2026, 5:01 AM UTC

Source last updated

Oct 18, 2026, 5:01 AM UTC

Current version retrieved

Oct 18, 2026, 5:03 AM UTC

Provider

NWS — active weather alerts (Storm)

Location

GU, US

Severity

Extreme

area

Guam

event

Typhoon Warning

onset

2026-10-18T15:01:00+10:00

states

["GU"]

urgency

Immediate

certainty

Likely

effective

2026-10-18T15:01:00+10:00

message id

urn:oid:2.49.0.1.840.0.e45c43cdf22bc5e22e9e9e488eac770866bf398c.001.1

references

["urn:oid:2.49.0.1.840.0.8f96da8543860aa3cc71d31b3156d80289ac78dd.001.1","urn:oid:2.49.0.1.840.0.f85c1cb2776ac5a31a0748a0fd7609ce3ffc26c7.001.1","urn:oid:2.49.0.1.840.0.e048915f876016bb415d43a6a114bbf10de92154.001.1"]

instruction

As frequent damaging tropical storm-force gusts continue, do not go outside to check for damage or to implement temporary repairs, even as sustained winds diminish through the next few hours. Occasional strong tropical storm-force gusts will maintain dangerous conditions outdoors. Do not open the doors of your home or shelter until high winds fully subside. Wait for the all-clear signal. Passing showers will bring very strong gusts without warning.

message type

Update

location basis

Approximate: centers of the NWS zones listed in the alert

freshness minutes

60

Source use policy · US government work (17 U.S.C. 105)

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