Hazardous Seas Warning for Guam Coastal Waters; Rota Coastal Waters
Official alert fields
What you need to know
- Applies to
- Guam Coastal Waters, Rota Coastal Waters
- Effective
- Ends or expires
- Official severity
- Moderate
- Official urgency
- Expected
- Official certainty
- Likely
What is happening
What: Very steep and hazardous seas 12 to 16 feet and southeast winds 20 to 30 kt with occasional gusts to 40 kt. Impacts: Very steep and hazardous seas could capsize or cause damage to vessels. Where: Guam and Rota Coastal Waters. When: Until 5 PM ChST Monday.
What the bulletin says to do
A hazardous seas warning means hazardous sea conditions are imminent or occurring. Recreational boaters should remain in port...or take shelter until waves subside. Commercial vessels should prepare for rough seas and consider remaining in port or taking shelter in port until hazardous seas subside.
Full official description
Bulletin details
* WHAT...Very steep and hazardous seas 12 to 16 feet and southeast winds 20 to 30 kt with occasional gusts to 40 kt. * WHERE...Guam and Rota Coastal Waters. * WHEN...Until 5 PM ChST Monday. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. * ADDITIONAL DETAILS...Typhoon and tropical storm conditions are no longer expected as Typhoon Champi continues moving away from the region. However, combined seas will be very steep due to remnant storm-induced swells and elevated wind waves. As Champi continues moving away at a relatively quick speed, seas could drop below 15 feet after midnight.
Official geometry where available
Alert boundary
Lifecycle record
Official revisions
- Alert
Hazardous Seas Warning issued October 18 at 5:53PM ChST until October 19 at 5:00PM ChST by NWS Tiyan GU
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Tiyan GU. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected