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Live/Severe Alerts/Record/Special Marine Warning

Warning

Special Marine Warning

Guam Coastal Waters; Rota Coastal Waters

Ended Oct 19, 11:15 AM

Waterspout possibleMoving north northeast at 40 mph
50 MI
50 MI
Map of the Special Marine Warning over Guam Coastal Waters, with the area it draws around the storm. Drawn on the national sheet; the scale is at its foot.
In force from
Oct 19, 10:41 AM
Until
Oct 19, 11:15 AM
Issued
Oct 19, 10:41 AM
Office
Tiyan, GU
Number
35 of its kind from this office this year
Severity
Severe
Storm motion
Moving north northeast at 40 mph
Where
Marianas waters

THE NATIONAL WEATHER SERVICE IN TIYAN GUAM HAS ISSUED A

Special marine warning for
ROTA COASTAL WATERS...

* UNTIL 1115 AM CHST.

* AT 1040 AM CHST...SEVERE THUNDERSTORMS CAPABLE OF PRODUCING WATERSPOUTS WERE LOCATED OVER SOUTHERN ROTA WATERS...MOVING NORTH AT 35 KNOTS.

Hazard
WIND GUSTS TO NEARLY 50 KNOTS. FREQUENT LIGHTNING. WATERSPOUTS POSSIBLE.
Source
RADAR.
Impact
WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY HAZARDOUS SEAS. SMALL CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND SUDDENLY HIGHER WAVES.

* SEVERE THUNDERSTORMS WILL REMAIN OVER MAINLY OPEN WATERS.

What to do

MOVE TO SAFE HARBOR IMMEDIATELY AS GUSTY WINDS AND HIGH WAVES ARE EXPECTED.

FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS. IF CAUGHT ON THE OPEN WATER STAY BELOW DECK IF POSSIBLE...KEEP AWAY FROM UNGROUNDED METAL OBJECTS.

Read the platesWaterspout FB-EVT-012How to read a warning FB-STN-001

On the radarForecast gusts over itRadar

Every warning of October 19, 2026Every severe alert in force