Special Marine Warning for Tinian and Rota Coastal Waters
This alert is no longer in effect.
NOAA issued it on August 16, 2026, 7 days 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.
NWS Tiyan GU issued a Special Marine Warning for Tinian and Rota Coastal Waters until 11:45 PM ChST due to a severe thunderstorm capable of producing waterspouts.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Tinian and Rota Coastal Waters
- Issued
- August 16, 2026
- Issuing authority
- NWS Tiyan GU
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: historical. It was issued 7 days ago; use the issuing agency's live warning service for current conditions in Tinian and Rota Coastal Waters.
Alert Details
Special Marine Warning issued by NWS Tiyan GU. Effective from 11:11 PM ChST August 16, 2026 until 11:45 PM ChST August 16, 2026. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Tinian Coastal Waters and Rota Coastal Waters.
What You Should Do
Move to safe harbor until hazardous weather passes. Move to safe harbor immediately as gusty winds and high waves are expected. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately.
Expected Conditions
Severe thunderstorm capable of producing waterspouts located over the south-central Tinian Coastal Waters, moving northwest at 5 knots. Hazard: waterspouts and wind gusts 34 knots or greater. Source: radar.
Timeline
Alert effective August 16, 2026 from 11:11 PM ChST until 11:45 PM 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 (884 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 16, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.