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Warning

Special Marine Warning

Guam Coastal Waters

Ended Oct 17, 11:45 AM

Waterspout observed
20 MI
10 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 17, 11:21 AM
Until
Oct 17, 11:45 AM
Issued
Oct 17, 11:21 AM
Office
Tiyan, GU
Number
27 of its kind from this office this year
Severity
Severe
Where
Marianas waters

THE NATIONAL WEATHER SERVICE IN TIYAN HAS ISSUED A

Special marine warning for
SOUTHEASTERN GUAM COASTAL WATERS...

* UNTIL 1145 AM CHST.

* AT 1121 AM CHST, A SEVERE THUNDERSTORM PRODUCING WATERSPOUTS WAS LOCATED 33 NM SOUTHEAST OF IPAN BUOY, MOVING SOUTH AT 30 KNOTS.

Hazard
WATERSPOUTS.
Source
RADAR INDICATED.
Impact
WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY HAZARDOUS SEAS.
Locations impacted include
MAINLY OPEN WATERS OF SOUTHEASTERN GUAM COASTAL WATERS.

What to do

MOVE TO SAFE HARBOR UNTIL HAZARDOUS WEATHER PASSES.

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

On the radarForecast gusts over itRadar

Also in force nearby

Every warning of October 17, 2026Every severe alert in force