Coastal Hazard Message
National Weather Service San Francisco CA
443 AM PST Fri Dec 5 2025
CAZ006-506-508-529-530-052300-
/O.CON.KMTR.CF.Y.0016.000000T0000Z-251207T2300Z/
San Francisco-North Bay Interior Valleys-
San Francisco Bay Shoreline-Northern Monterey Bay-
Southern Monterey Bay and Big Sur Coast-
443 AM PST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST
SUNDAY...
* WHAT...Up to 1.4 ft of inundation above ground level is
possible in low lying areas near shorelines and tidal
waterways.
* WHERE...Bayshore locations along San Francisco and Monterey
Bay.
* WHEN...Until 3 PM PST Sunday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.
* ADDITIONAL DETAILS...The San Francisco tidal gauge high tide
is expected to be 1.4 ft above normal (7.23 ft MLLW) at 10:35
AM Friday, 1.2 ft above normal (7.08 ft MLLW) at 11:25 AM
Saturday, and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM
Sunday. High tide timing varies up to 90 minutes earlier or
later along the Pacific Coast and throughout the San Francisco
Bay respectively.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
$$
Coastal Hazard Message
National Weather Service Eureka CA
131 AM PST Fri Dec 5 2025
CAZ103-051745-
/O.CON.KEKA.CF.Y.0010.251205T1800Z-251205T2000Z/
Northern Humboldt Coast-
131 AM PST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO NOON PST TODAY...
* WHAT...High astronomical tides will cause minor flooding in low
lying areas around Humboldt Bay. Up to one half foot of
saltwater inundation above ground level is possible near
shorelines and tidal waterways. Between 9.1 and 9.3 feet MLLW
at the North Spit tide gauge is predicted.
* WHERE...Northern Humboldt Coast County.
* WHEN...From 10 AM to noon PST Friday. High tide is at 10:55 AM
at the Humboldt Bay North Spit tide gauge. Saltwater inundation
will be possible 1 to 2 hours before and after high tide.
* IMPACTS...Flooding of low lying areas around Humboldt Bay
including parks and roads with only isolated closures
expected. Flooding will likely impact Jackson Ranch Road in
the Arcata Bottoms and several roads in King Salmon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.
Feet Above Ground is locally defined as feet above the Highest
Astronomical Tide or HAT.
&&
$$
Coastal Hazard Message
National Weather Service Charleston SC
233 AM EST Fri Dec 5 2025
SCZ049-050-051400-
/O.CON.KCHS.CF.Y.0055.251205T1100Z-251205T1400Z/
Coastal Colleton-Charleston-
233 AM EST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 6 AM TO 9 AM EST
THIS MORNING...
* WHAT...Up to one half foot of inundation above ground level
expected along shorelines and tidal waterways (7.2 to 7.4 feet
Mean Lower Low Water at Charleston).
* WHERE...Coastal Colleton and Charleston Counties.
* WHEN...From 6 AM to 9 AM EST this morning.
* IMPACTS...This could result in some roads becoming impassable.
* ADDITIONAL DETAILS...High tide will occur around 7:43 AM today
at Charleston. Saltwater inundation will be possible 1 to 2
hours before and after high tide.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Visit water.weather.gov for additional water level and flood
impact information.
&&
Time of high total tides are approximate to the nearest hour.
Charleston Harbor SC
MLLW Categories - Minor 7.0 ft, Moderate 7.5 ft, Major 8.0 ft
MHHW Categories - Minor 1.2 ft, Moderate 1.7 ft, Major 2.2 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
05/08 AM 7.3 1.5 0.5 N/A Minor
05/08 PM 5.5 -0.3 0.2 N/A None
06/08 AM 7.0 1.2 0.4 N/A Minor
06/09 PM 5.3 -0.5 0.1 N/A None
07/09 AM 6.8 1.0 0.4 N/A None
07/10 PM 5.3 -0.5 0.2 N/A None
&&
$$
Coastal Hazard Message
National Weather Service Tiyan GU
438 PM ChST Fri Dec 5 2025
FMZ023-052100-
/O.CON.PGUM.CF.Y.0005.000000T0000Z-251206T0700Z/
Chuuk-
438 PM ChST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST
SATURDAY...
* WHAT...Minor coastal flooding 1 to 2 feet.
* WHERE...North and east facing reefs of Chuuk.
* WHEN...Until 5 PM ChST Saturday.
* IMPACTS...Flooding of lots, parks, and roads with only isolated
road closures expected.
* ADDITIONAL DETAILS...A long-period north swell combined with above
normal King Tides will produce moderate coastal flooding during
high tide into the weekend. If the north swell remains longer than
expected, flooding could continue into Sunday. High tides will
begin to decrease Sunday afternoon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A coastal flood advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.
Watch for debris along low-lying shorelines facing north and
east. Residents living along these low-lying shorelines need to
monitor water levels and take actions to protect property from
inundation.
&&
$$
Kleeschulte
Coastal Hazard Message
National Weather Service Wilmington NC
1256 AM EST Fri Dec 5 2025
NCZ107-051500-
/O.NEW.KILM.CF.Y.0104.251205T1300Z-251205T1600Z/
Inland New Hanover-
1256 AM EST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 AM TO 11 AM EST THIS
MORNING...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
* WHERE...The lower Cape Fear River including downtown
Wilmington.
* WHEN...From 8 AM to 11 AM EST this morning.
* IMPACTS...The lowest portions of USS North Carolina Road and
Battleship Road begin to observe minor coastal flooding. Water
begins to spread out of storm drains onto Water Street just
south of Market Street in downtown Wilmington.
* ADDITIONAL DETAILS...Affected areas listed are based on
average tide conditions. Additional locations may experience
flooding during periods of heavy rainfall, high winds, or
other factors.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
Cape Fear River at Wilmington
MLLW Categories - Minor 5.5 ft, Moderate 6.8 ft, Major 10.0 ft
MHHW Categories - Minor 0.8 ft, Moderate 2.1 ft, Major 5.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
05/09 AM 5.5 0.8 0.3 N/A Minor
05/10 PM 4.7 0.0 0.5 N/A None
06/11 AM 5.6 0.9 0.6 N/A Minor
06/11 PM 4.6 -0.1 0.4 N/A None
07/12 PM 5.5 0.8 0.6 N/A Minor
&&
$$
Coastal Hazard Message
National Weather Service Wilmington NC
1256 AM EST Fri Dec 5 2025
SCZ054-056-051400-
/O.NEW.KILM.CF.Y.0104.251205T1100Z-251205T1400Z/
Coastal Horry-Coastal Georgetown-
1256 AM EST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY IN EFFECT FROM 6 AM TO 9 AM EST THIS
MORNING...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
* WHERE...Coastal Horry and Coastal Georgetown Counties.
* WHEN...From 6 AM to 9 AM EST this morning.
* IMPACTS...Vulnerable causeways to and from local beaches may
experience minor coastal flooding. Low-lying roads and
locations along the Intracoastal Waterway and adjacent tidal
creeks may observe minor coastal flooding. Check with local
officials for the latest information regarding coastal flood
impacts and closures.
* ADDITIONAL DETAILS...Affected areas listed are based on
average tide conditions. Additional locations may experience
flooding during periods of heavy rainfall, high winds, or
other factors.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
Springmaid Pier at Myrtle Beach
MLLW Categories - Minor 7.0 ft, Moderate 8.5 ft, Major 10.5 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.9 ft, Major 4.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
05/07 AM 7.3 1.7 0.4 1-2 Minor
05/08 PM 5.9 0.3 0.7 2 None
06/08 AM 7.5 1.9 0.7 2 Minor
06/09 PM 5.5 -0.1 0.4 1 None
07/09 AM 7.2 1.6 0.7 1 Minor
07/09 PM 5.4 -0.2 0.4 1-2 None
&&
$$
Coastal Hazard Message
National Weather Service Wilmington NC
1256 AM EST Fri Dec 5 2025
NCZ106-108-110-051400-
/O.NEW.KILM.CF.Y.0104.251205T1000Z-251205T1400Z/
Coastal Pender-Coastal New Hanover-Coastal Brunswick-
1256 AM EST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 AM TO 9 AM EST THIS
MORNING...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
* WHERE...Coastal Pender, Coastal New Hanover and Coastal
Brunswick Counties.
* WHEN...From 5 AM to 9 AM EST this morning.
* IMPACTS...Low-lying roads and locations along the Intracoastal
Waterway and adjacent tidal creeks may observe minor coastal
flooding. Check with local officials for any road closures or
impacts.
* ADDITIONAL DETAILS...Affected areas listed are based on
average tide conditions. Additional locations may experience
flooding during periods of heavy rainfall, high winds, or
other factors.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
Mercer Pier at Wrightsville Beach
MLLW Categories - Minor 6.0 ft, Moderate 8.0 ft, Major 10.0 ft
MHHW Categories - Minor 1.5 ft, Moderate 3.5 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
05/07 AM 6.2 1.7 0.7 2 Minor
05/07 PM 4.8 0.3 0.8 2 None
06/08 AM 6.4 1.9 1.0 2 Minor
06/08 PM 4.6 0.1 0.7 2 None
07/09 AM 6.2 1.7 1.0 2 Minor
07/09 PM 4.7 0.2 0.8 2 None
&&
$$
Coastal Hazard Message
National Weather Service Seattle WA
921 PM PST Thu Dec 4 2025
WAZ001-310-311-051500-
/O.CON.KSEW.CF.Y.0007.251206T1200Z-251206T1800Z/
San Juan County-Lowlands of Western Whatcom County-
Lowlands of Western Skagit and Northwestern Snohomish Counties-
921 PM PST Thu Dec 4 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 4 AM TO 10 AM
PST SATURDAY...
* WHAT...Minor coastal flooding expected. Inundation of around 2
feet above ground level is possible along shorelines and low-
lying coastal areas.
* WHERE...San Juan County, Lowlands of Western Whatcom County
and Lowlands of Western Skagit and Northwestern Snohomish
Counties zones.
* WHEN...From 4 AM to 10 AM PST Saturday.
* IMPACTS...Minor coastal flooding due to tidal overflow is
expected around high tide. This may lead to flooding of
parking lots, parks, and roads, with only isolated road
closures expected.
* ADDITIONAL DETAILS...Coastal flooding will occur in the hours
around high tide, at around 800 AM Saturday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inundation above ground level refers to the height above the Mean
Higher High Water (MHHW) level.
&&
$$
Coastal Hazard Message
National Weather Service Seattle WA
921 PM PST Thu Dec 4 2025
WAZ331-051500-
/O.CON.KSEW.CF.Y.0006.251205T1700Z-251205T2300Z/
/O.CON.KSEW.CF.Y.0007.251206T1700Z-251206T2300Z/
Grays Harbor County Coast-
921 PM PST Thu Dec 4 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 9 AM TO 3 PM PST
FRIDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 9 AM TO 3 PM PST
SATURDAY...
* WHAT...For the first Coastal Flood Advisory, minor coastal
flooding expected. Inundation of 2 to 2.5 feet above ground
level is possible along shorelines and low-lying coastal areas.
For the second Coastal Flood Advisory, minor coastal flooding
expected. Inundation of around 2 feet above ground level is
possible along shorelines and low-lying coastal areas.
* WHERE...Grays Harbor County Coast zone.
* WHEN...For the first Coastal Flood Advisory, from 9 AM to 3 PM
PST Friday. For the second Coastal Flood Advisory, from 9 AM
to 3 PM PST Saturday.
* IMPACTS...Minor coastal flooding due to tidal overflow is
expected around high tide. This may lead to flooding of
parking lots, parks, and roads, with only isolated road
closures expected.
* ADDITIONAL DETAILS...Coastal flooding will occur in the hours
around high tide, at around 1200 PM Friday and Saturday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inundation above ground level refers to the height above the Mean
Higher High Water (MHHW) level.
&&
$$
Coastal Hazard Message
National Weather Service Seattle WA
921 PM PST Thu Dec 4 2025
WAZ325-326-330-051500-
/O.CON.KSEW.CF.Y.0006.251205T1700Z-251205T2300Z/
Eastern Strait of Juan de Fuca-Western Strait of Juan de Fuca-
Northern Washington Coast-
921 PM PST Thu Dec 4 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 9 AM TO 3 PM PST
FRIDAY...
* WHAT...Minor coastal flooding expected. Inundation of around 2
to 2.5 feet above ground level is possible along shorelines and
low- lying coastal areas.
* WHERE...Eastern Strait of Juan de Fuca, Western Strait of Juan
de Fuca and Northern Washington Coast zones.
* WHEN...From 9 AM to 3 PM PST Friday.
* IMPACTS...Minor coastal flooding due to tidal overflow is
expected around high tide. This may lead to flooding of
parking lots, parks, and roads, with only isolated road
closures expected.
* ADDITIONAL DETAILS...Coastal flooding will occur in the hours
around high tide, at around 1200 PM Friday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inundation above ground level refers to the height above the Mean
Higher High Water (MHHW) level.
&&
$$
Coastal Hazard Message
National Weather Service Tiyan GU
258 PM ChST Fri Dec 5 2025
MHZ002-051900-
/O.NEW.PGUM.SU.Y.0039.251205T2100Z-251207T0500Z/
/O.EXT.PGUM.CF.Y.0006.000000T0000Z-251207T0500Z/
Majuro-
258 PM ChST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 3 PM CHST SUNDAY...
...HIGH SURF ADVISORY IN EFFECT FROM 7 AM SATURDAY TO 3 PM CHST
SUNDAY...
* WHAT...For the Coastal Flood Advisory, moderate coastal flooding.
For the High Surf Advisory, large breaking waves of 10 to 13 feet.
* WHERE...North and East facing reefs of Majuro.
* WHEN...For the Coastal Flood Advisory, until 3 PM ChST Sunday.
For the High Surf Advisory, from 7 AM Saturday to 3 PM ChST
Sunday.
* 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 trade-wind swell will move into the Marshall.
Islands by Saturday morning, leading to hazardous surf of 12 feet
for north and east facing reefs. The increased swell combined with
the King Tide will lead to moderate coastal flooding.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
Coastal Hazard Message
National Weather Service Portland OR
256 PM PST Thu Dec 4 2025
ORZ101-WAZ201-060000-
/O.EXP.KPQR.CF.Y.0005.000000T0000Z-251204T2300Z/
/O.NEW.KPQR.CF.Y.0007.251206T1700Z-251206T2300Z/
/O.CON.KPQR.CF.Y.0006.251205T1700Z-251205T2300Z/
Clatsop County Coast-South Washington Coast-
256 PM PST Thu Dec 4 2025
...COASTAL FLOOD ADVISORY FOR MINOR TIDAL OVERFLOW REMAINS IN
EFFECT FROM 9 AM TO 3 PM PST FRIDAY...
...COASTAL FLOOD ADVISORY FOR MINOR TIDAL OVERFLOW IN EFFECT FROM
9 AM TO 3 PM PST SATURDAY...
* WHAT...For the first Coastal Flood Advisory, tidal overflow
flooding expected. For the second Coastal Flood Advisory,
tidal overflow flooding expected.
* WHERE...In Oregon, Clatsop County Coast. In Washington, South
Washington Coast.
* WHEN...For the first Coastal Flood Advisory, from 9 AM to 3 PM
PST Friday. For the second Coastal Flood Advisory, from 9 AM
to 3 PM PST Saturday.
* IMPACTS...Total tide of up to 11.3 feet at Toke Point and up to
10.6 feet at Tongue Point will result in minor flooding up to
one foot above ground level during high tides in low lying areas
near bays, sloughs, and in the lower reaches of coastal rivers.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Coastal Flood Advisory means that tidal overflow flooding is
expected. Coastal residents in the warned area should be alert
for rising water, and take appropriate action to protect life and
property.
&&
$$
For more information from the National Weather Service visit
https://www.weather.gov/portland |
