WWA Summary for All Issued by MFR

Flood Warning

Flood Statement
National Weather Service Portland OR
340 PM PST Wed Dec 10 2025

...The Flood Warning is extended for the following rivers in
Oregon...Washington...

  Luckiamute River near Suver affecting Polk and Benton Counties.

  Cowlitz River at Kelso affecting Cowlitz County.

  Grays River at Covered Bridge near Rosburg affecting Wahkiakum
  County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive
through flooded areas.

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Additional information is available at www.weather.gov.

The next statement will be issued late tonight at 400 AM PST.

&&

ORC003-053-111200-
/O.EXT.KPQR.FL.W.0021.000000T0000Z-251211T2133Z/
/SUVO3.1.ER.251210T1823Z.251211T0000Z.251211T1233Z.NO/
340 PM PST Wed Dec 10 2025

...FLOOD WARNING NOW IN EFFECT UNTIL EARLY TOMORROW AFTERNOON...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Luckiamute River near Suver.

* WHEN...Until early tomorrow afternoon.

* IMPACTS...Above 29.0 feet, expect widespread flooding of the
  lowland agricultural lands upstream from Falls City and Maple
  Grove to the confluence with the Willamette River. Also expect
  flooding and possible closure of numerous secondary roads near the
  river.

* ADDITIONAL DETAILS...
  - At 3:10 PM PST Wednesday the stage was 28.1 feet.
  - Bankfull stage is 25.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 3:10 PM PST Wednesday was 28.1 feet.
  - Forecast...The river is expected to rise to 28.8 feet late
    this afternoon, then fall to below flood stage Thursday
    morning.
  - Flood stage is 27.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4484 12340 4486 12340 4483 12333 4481 12333
      4479 12320 4477 12320 4476 12316 4473 12316
      4475 12323 4477 12323 4480 12336 4482 12336


$$

Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
247 PM PST Wed Dec 10 2025

PZZ350-370-111200-
/O.CON.KMFR.SC.Y.0108.000000T0000Z-251211T1800Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
247 PM PST Wed Dec 10 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
THURSDAY...

* WHAT...Seas 9 to 11 ft at 15 seconds.

* WHERE...All the waters north of Cape Blanco.

* WHEN...Until 10 AM PST Thursday.

* IMPACTS...Gusty winds and/or steep seas could capsize or
  damage smaller vessels.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.

&&

$$

Visit us at https://www.weather.gov/Medford

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
236 PM PST Wed Dec 10 2025

PZZ470-110645-
/O.CON.KEKA.SC.Y.0133.251212T1100Z-251212T2300Z/
Pt St George to Cape Mendocino 10 to 60 nm-
236 PM PST Wed Dec 10 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM TO 3 PM PST
FRIDAY...

* WHAT...North winds 10 to 15 kt and seas 7 to 9 feet expected.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...From 3 AM to 3 PM PST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

URGENT - MARINE WEATHER MESSAGE
National Weather Service Portland OR
216 PM PST Wed Dec 10 2025

PZZ253-111430-
/O.CON.KPQR.SC.Y.0146.000000T0000Z-251211T2100Z/
Coastal waters from Cape Foulweather to Florence OR out 10 NM-
216 PM PST Wed Dec 10 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST
THURSDAY...

* WHAT...Seas 7 to 12 ft at 15 seconds and south winds 10 to 20
  kt with gusts up to 30 kt.

* WHERE...Coastal waters from Cape Foulweather to Florence OR
  out 10 NM.

* WHEN...Until 1 PM PST Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$


For more information from the National Weather Service, visit:
https://www.weather.gov/portland/marine

URGENT - MARINE WEATHER MESSAGE
National Weather Service Portland OR
216 PM PST Wed Dec 10 2025

PZZ271>273-111430-
/O.CON.KPQR.SC.Y.0145.000000T0000Z-251211T2100Z/
Waters from Cape Shoalwater WA to Cape Falcon OR from 10 to 60 NM-
Waters from Cape Falcon to Cape Foulweather OR from 10 to 60 NM-
Waters from Cape Foulweather to Florence OR from 10 to 60 NM-
216 PM PST Wed Dec 10 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST
THURSDAY...

* WHAT...Seas 9 to 13 ft at 15 seconds and southwest winds 15 to
  25 kt with gusts up to 30 kt.

* WHERE...Outer Coastal Waters from Cape Shoalwater to Florence
  10 to 60 NM offshore.

* WHEN...Until 1 PM PST Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

Beach Hazards Statement

Coastal Hazard Message
National Weather Service Eureka CA
301 PM PST Wed Dec 10 2025

CAZ101-103-104-109-110715-
/O.CON.KEKA.BH.S.0023.251211T1800Z-251212T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
301 PM PST Wed Dec 10 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THURSDAY
MORNING THROUGH THURSDAY EVENING...

* WHAT...Increased threat of sneaker waves expected.

* WHERE...Coastal Del Norte, Northern Humboldt Coast,
  Southwestern Humboldt and Mendocino Coast Counties.

* WHEN...From Thursday morning through Thursday evening. .

* IMPACTS...Large, unexpected waves can sweep across the beach
  without warning, sweeping people into the sea from rocks,
  jetties, and beaches. These sneaker waves can also move large
  objects such as logs, crushing anyone caught underneath.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Don`t be fooled by an ocean that looks calm.  There can be
30 minutes of small waves before a sneaker wave strikes.  Avoid
rocks and jetties. Avoid steep beaches.  Stay much farther back
from the water and never turn your back on the ocean.

&&

$$

Air Stagnation Advisory

URGENT - WEATHER MESSAGE
National Weather Service Boise ID
130 PM MST Wed Dec 10 2025

IDZ012-014-016-033-ORZ061>064-111200-
/O.NEW.KBOI.AS.Y.0004.251212T1200Z-251215T1200Z/
Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley-
Upper Weiser River-Harney County-Baker County-Malheur County-
Oregon Lower Treasure Valley-
Including the cities of Cambridge, Goodrich, Buchanan, Nyssa,
Boise, Ontario, Baker, Venator, Malheur City, Caldwell, Nampa,
Twin Falls, Mesa, Glendale, Burns, Crane, New Princeton, Indian
Valley, Dunnean, Diamond, Council, and Fruitvale
130 PM MST Wed Dec 10 2025 /1230 PM PST Wed Dec 10 2025/

...AIR STAGNATION ADVISORY IN EFFECT FROM 5 AM MST /4 AM PST/ FRIDAY
TO 5 AM MST /4 AM PST/ MONDAY...

* WHAT...An extended period of stagnant air, with light winds and
  little vertical mixing. This is due to an inversion near the
  surface that will continue to trap pollutants.

* WHERE...Portions of south central and southwest Idaho and
  northeast and southeast Oregon.

* WHEN...From 5 AM MST /4 AM PST/ Friday to 5 AM MST /4 AM PST/
  Monday.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.

&&

$$

JY