Tropical Storm Warning Issued for Guam
This alert is no longer in effect.
NOAA issued it on April 12, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
A Tropical Storm Warning is in effect for Guam as Typhoon Sinlaku moves north-northwest, with winds reaching 125 mph and potential for heavy rainfall and flooding.
Read this weather record in 30 seconds
- Record type
- Tropical Storm Warning
- Affected area
- Guam
- Issued
- April 12, 2026
- Issuing authority
- NWS Tiyan GU
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Guam.
Alert Details
A Tropical Storm Warning has been issued by NWS Tiyan GU. It is effective from April 12, 2026, at 3:56 PM ChST.
Affected Areas
The warning affects Guam.
What You Should Do
For those under the warning, rush to complete preparations for the protection of life and property. Items to bring to a shelter include a first aid kit, medicines and prescriptions, baby food and diapers, games and books, toiletries, a battery-powered radio, a cell phone, flashlights with extra batteries, a blanket or sleeping bag for each person, personal identification, copies of key papers such as insurance policies, available cash and credit cards. Cover all windows and doors with shutters or plywood, move patio furniture and other loose objects indoors, brace all exterior doors including garage doors as early as possible. If needed, make trips to the hardware store, grocery store, or gas station early. Stay calm and keep informed, comply with any evacuation orders, and evacuate if you live in a metal roof or container home, surge zone, or flood-prone area to a designated shelter or a sturdy home outside evacuation zones.
Expected Conditions
Typhoon Sinlaku is located about 470 miles east-southeast of Guam, with storm intensity of 125 mph and moving north-northwest at 9 mph. It is bringing periods of intense showers, thunderstorms, and winds, with potential for flooding.
Timeline
The alert is effective from April 12, 2026, at 3:56 PM ChST and expires on April 13, 2026, at 12:00 AM ChST.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,526 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 12, 2026.
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Common questions about this NWS weather alert.