Hazardous Seas Warning
NWS Medford OR ยท US
Details
Hazardous Seas Warning Remains In Effect Until 4 PM PST This Afternoon... ...Small Craft Advisory Remains In Effect From 4 PM This Afternoon To 10 PM PST Thursday... ...Gale Watch In Effect From Thursday Evening Through Friday Evening
- Event
- Hazardous Seas Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Expected
- Severity
- Moderate
- Certainty
- Likely
- Response
- Avoid
Description
What
South winds 25 to 35 kt with very steep and hazardous seas 14 to 16 ft at 14 seconds. Gale force gusts to 40 kt are possible at times through this morning. South winds ease to 15 to 25 kt this afternoon and swell dominated seas remain steep 12 to 15 ft. Conditions rapidly worsen late Thursday as south winds and seas quickly increase. Gales of 30 to 40 kt with gusts to 50 kt possible. Seas increase due to increasing wind waves and an incoming heavy long period swell, possibly reaching 20 to 25 ft at 15 seconds Friday.
Where
All areas.
When
For the Hazardous Seas Warning, until 4 PM PST this afternoon. For the Small Craft Advisory, from 4 PM this afternoon to 10 PM PST Thursday. For the Gale Watch, from Thursday evening through Friday evening.
Impacts
Strong winds and very steep seas could capsize or damage vessels. Low visibility conditions are possible.
Additional details
Very steep, hazardous seas could reach 25 to 30 feet or higher late Friday into Saturday as a heavy long period swell continues to build in. Please stay tuned for updates on this high impact weather pattern. * View the hazard area in detail at https://go.usa.gov/x6hks
Instructions
Mariners should consider altering plans to avoid strong winds and very steep seas. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions.
Affected areas
- Coastal waters from Florence to Cape Blanco OR out 10 nm
- Waters from Florence to Cape Blanco OR from 10 to 60 nm
Public contact
- Issuer
- NWS Medford OR
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~1m0s
- CAP status
- Actual
- CAP message type
- Update
- Lifecycle
- Updated
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M750956J2YG72QNV6JCSA02P
- Identifier
- urn:oid:2.49.0.1.840.0.df034f960026d5bdf3d6e84ef4e704839e73929b.001.1
- Sender
- [email protected]
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Medford OR
- AWIPS ID
- CAPMFR
- NWWS sequence
- nwws_processor.6467
- WMO heading
- XOUS56
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 56
References
- Sender
- [email protected]
- Sent
- Sender
- [email protected]
- Sent
Event codes
| Name | Value |
|---|---|
| SAME | NWS |
| NationalWeatherService | SEW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | MWWMFR |
| WMOidentifier | WHUS76 KMFR 110950 |
| NWSheadline | HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 10 PM PST THURSDAY... ...GALE WATCH IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY EVENING |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| VTEC | /O.CON.KMFR.SE.W.0043.000000T0000Z-261112T0000Z/ |
| eventEndingTime | 2026-11-11T16:00:00-08:00 |
| BLOCKCHANNEL | CMAS |
| expiredReferences | [email protected],urn:oid:2.49.0.1.840.0.72df62b385cc30f042df0646a160728810e1b366.001.2,2026-11-10T00:43:00-08:00 |
Locations
Location data
- Coastal waters from Florence to Cape Blanco OR out 10 nm
- Waters from Florence to Cape Blanco OR from 10 to 60 nm
| Name | Value |
|---|---|
| SAME | 057350 |
| SAME | 057370 |
| UGC | PZZ350 |
| UGC | PZZ370 |