The National Weather Service office in Tiyan, Guam issued an Extreme Wind Warning at 3:26 AM ChST on October 18, in effect until 5:30 AM ChST. This is the most serious wind alert the NWS issues – it is reserved for sustained surface winds of 115 mph or greater, the kind typically produced by the eyewall of a major typhoon.
An Extreme Wind Warning means winds capable of widespread, severe damage are occurring or imminent: roofs torn off, trees and power poles downed, and debris turned into dangerous projectiles. Residents across Guam should treat this like a tornado warning – the safest place is an interior room on the lowest floor of a sturdy building, away from windows.
What residents should do right now
If you are indoors, stay there. Move away from windows and glass doors, and shelter in an interior hallway, bathroom, or closet. Do not go outside during any apparent calm – a lull can mean the eye of a storm is passing, with violent winds returning suddenly from the opposite direction.
Expect power outages and possible disruptions to water, phone, and internet service. Keep a flashlight (not candles), a battery-powered radio, and your charged phone close by. After the warning expires at 5:30 AM, remain cautious: downed power lines, debris, and weakened structures will still pose hazards, and additional warnings may follow if the storm is still affecting the island.
This warning is a short-fused, high-urgency alert covering only the next couple of hours, but dangerous conditions may persist beyond its expiration. Continue monitoring local broadcasts and official NWS updates until authorities give the all-clear.
Data for this alert comes from the National Weather Service office in Tiyan, Guam (NOAA/NWS).
Frequently Asked Questions
What does an 'Extreme Wind Warning' actually mean?
It is the NWS's highest wind alert, issued only when sustained winds of 115 mph or more – typically from a typhoon's eyewall – are occurring or imminent. It signals life-threatening conditions and major structural damage potential.
What should I do right now?
Stay inside a sturdy building, move to an interior room away from windows, and remain there until the warning expires at 5:30 AM ChST and officials confirm conditions have improved.
If the wind suddenly stops, is it safe to go outside?
No. A sudden calm may be the eye of the storm passing overhead, and extreme winds can return abruptly from the opposite direction. Stay sheltered until the all-clear is given.
Should I expect power and communications outages?
Yes, winds of this magnitude commonly bring down power lines and damage infrastructure. Keep a flashlight and battery-powered radio handy and expect that outages could last well beyond the warning itself.
Keep tracking this:
Source: National Weather Service (NWS)
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Sky & Solar Conditions at the Time
Moon: First Quarter (41% illuminated), in Capricorn.
Notable planetary angles: Mars trine Saturn (121°), Sun sextile Jupiter (62°), Mercury square Jupiter (86°).
Concurrent space weather: planetary Kp index 0.7; strongest recent solar flare: nothing notable.
This is a factual snapshot, not a claim of cause and effect – researchers are divided on whether lunar, planetary or solar factors influence seismic or weather activity. It’s included so readers can track the pattern for themselves over time.
