High Surf Advisory
Coastal Hazard Message
National Weather Service Tiyan GU
450 PM ChST Sun Dec 7 2025
FMZ037-071900-
/O.CON.PGUM.SU.Y.0040.000000T0000Z-251207T1900Z/
/O.CON.PGUM.CF.S.0006.000000T0000Z-251207T1900Z/
Yap-
450 PM ChST Sun Dec 7 2025
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 5 AM CHST MONDAY...
...COASTAL FLOOD STATEMENT REMAINS IN EFFECT THROUGH LATE
TONIGHT...
* WHAT...Large breaking waves of 7 to 9 feet and isolated minor
coastal flooding up to half a foot.
* WHERE...North facing reefs of Yap.
* WHEN...Until 5 AM ChST Monday.
* IMPACTS...Some water on low lying roads and property. Dangerous
swimming and surfing conditions and localized beach erosion.
* ADDITIONAL DETAILS...An elevated north swell combined with a
northeast trade swell will produce hazardous surf along north
facing reefs. The surf combined with above normal King Tides will
produce minor coastal flooding during high tide along north facing
reefs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
Watch for debris along low-lying shorelines facing north.
&&
$$
Coastal Hazard Message
National Weather Service Tiyan GU
450 PM ChST Sun Dec 7 2025
FMZ023-072000-
/O.CON.PGUM.SU.Y.0040.251207T0700Z-251208T0700Z/
Chuuk-
450 PM ChST Sun Dec 7 2025
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST MONDAY...
* WHAT...Large breaking waves of 7 to 9 feet expected.
* WHERE...North facing reefs of Chuuk.
* WHEN...From 5 PM this afternoon to 5 PM ChST Monday.
* IMPACTS...Dangerous swimming and surfing conditions and localized
beach erosion.
* ADDITIONAL DETAILS...The mixture of the elevated trade swell with a
pulse of northerly swell will support surf up to 9 feet along north
facing reefs late this afternoon and will continue through Monday
afternoon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
DeCou
Coastal Hazard Message...CORRECTED
National Weather Service Tiyan GU
402 PM ChST Sun Dec 7 2025
GUZ001-MPZ001>003-071800-
/O.COR.PGUM.SU.Y.0041.000000T0000Z-251207T1800Z/
/O.COR.PGUM.RP.S.0019.000000T0000Z-251207T1800Z/
Guam-Rota-Tinian-Saipan-
402 PM ChST Sun Dec 7 2025
Corrected the what and additional details sections.
...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 4 AM CHST MONDAY...
...HIGH RIP CURRENT RISK STATEMENT NOW IN EFFECT THROUGH LATE
TONIGHT...
* WHAT...For the High Surf Advisory, large breaking waves of 7 to 9
feet in the surf zone. For the High Rip Current Risk, dangerous rip
currents.
* WHERE...North facing reefs of the Marianas.
* WHEN...For the High Surf Advisory, until 4 AM ChST Monday. For the
High Rip Current Risk, through late tonight.
* IMPACTS...Dangerous swimming and surfing conditions and localized
beach erosion. Rip currents can sweep even the best swimmers away
from shore into deeper water.
* ADDITIONAL DETAILS...Significant northerly swells generated by
distant synoptic systems are producing hazardous surf and a high
risk of rip currents along north facing reefs of the Marianas
through at least late tonight. Surf is then likely to fall below
hazardous levels thereafter as this pulse in northerly swell
diminishes, which will also allow rip current risk to drop to
moderate along said reefs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
If caught in a rip current, relax and float. Don`t swim against
the current. If able, swim in a direction following the
shoreline. If unable to escape, face the shore and call or wave
for help.
&&
$$
Montvila
Coastal Hazard Message
National Weather Service Tiyan GU
219 PM ChST Sun Dec 7 2025
FMZ001-071830-
/O.CON.PGUM.SU.Y.0038.000000T0000Z-251208T0500Z/
Kosrae-
219 PM ChST Sun Dec 7 2025
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 3 PM CHST MONDAY...
* WHAT...Large breaking waves of 8 to 10 feet.
* WHERE...North and east facing reefs of Kosrae.
* WHEN...Until 3 PM ChST Monday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion.
* ADDITIONAL DETAILS...Surf is expected to remain hazardous
through Monday afternoon. The primary trade swell is expected to
subside through the day Monday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
Coastal Hazard Message
National Weather Service Tiyan GU
219 PM ChST Sun Dec 7 2025
FMZ013-071830-
/O.CON.PGUM.SU.Y.0039.000000T0000Z-251208T0500Z/
Pohnpei-
219 PM ChST Sun Dec 7 2025
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 3 PM CHST MONDAY...
* WHAT...Large breaking waves of 9 to 12 feet.
* WHERE...North and east facing reefs of Pohnpei.
* WHEN...From 7 AM this morning to 3 PM ChST Monday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion.
* ADDITIONAL DETAILS...A significant trade-wind swell continues
throughout region this morning allowing surf to build to
hazardous levels for both north (9 feet) and east (12 feet)
facing reefs. The trade swell is expected to subside through
late tonight.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
Doll
Coastal Hazard Message
National Weather Service Tiyan GU
219 PM ChST Sun Dec 7 2025
MHZ002-071830-
/O.CON.PGUM.CF.Y.0006.000000T0000Z-251207T1700Z/
/O.CON.PGUM.SU.Y.0039.000000T0000Z-251208T0500Z/
Majuro-
219 PM ChST Sun Dec 7 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM CHST
MONDAY...
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 3 PM CHST MONDAY...
* WHAT...Large breaking waves of 10 to 13 feet and moderate
coastal flooding.
* WHERE...North and east facing reefs of Majuro.
* WHEN...For the Coastal Flood Advisory, until 3 AM ChST Monday.
For the High Surf Advisory, until 3 PM ChST Monday.
* IMPACTS...Flooding of lots, parks, and roads with only isolated
road closures expected. Dangerous swimming and surfing conditions
and localized beach erosion.
* ADDITIONAL DETAILS...A significant trade-wind swell has moved
into the Marshall Islands, leading to hazardous surf around
12 feet for north and east facing reefs. The increased swell
combined along with elevated tides has caused moderate coastal
flooding and is expected to occur during high tide this evening.
The risk of coastal flooding will decrease tonight as the overall
magnitude of high tides decrease.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
