Alert archive / Oregon / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 42, NWS Medford, OR

July 1, 2021

NWS Medford, OR issued this hazardous seas warning at Jul 1, 2021, 2:15 AM PDT. It took effect at Jul 1, 2021, 5:00 PM PDT. It was in force for 4 days. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 1, 2021, 2:15 AM PDT (09:15 UTC)
In effect from
Jul 1, 2021, 5:00 PM PDT
Expired
Jul 5, 2021, 5:00 PM PDT
In force
4 days
Issued by
NWS Medford, OR

The text

As transmitted.

869 
WHUS76 KMFR 010915
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
215 AM PDT Thu Jul 1 2021

PZZ370-012300-
/O.CAN.KMFR.SC.Y.0072.000000T0000Z-210704T1200Z/
/O.EXB.KMFR.SC.Y.0073.210702T0000Z-210704T1800Z/
/O.UPG.KMFR.SE.A.0016.210702T1200Z-210704T1200Z/
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
215 AM PDT Thu Jul 1 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO
11 AM PDT SUNDAY...

* WHAT...North winds 15 to 25 kt.
  

* WHERE...All areas.

* WHEN...From 5 PM this afternoon to 11 AM PDT Sunday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ376-012300-
/O.EXT.KMFR.SC.Y.0072.000000T0000Z-210704T1800Z/
/O.UPG.KMFR.SE.A.0016.210702T1200Z-210704T1200Z/
/O.NEW.KMFR.SE.W.0042.210702T0000Z-210704T1800Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
215 AM PDT Thu Jul 1 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 AM PDT SUNDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO
11 AM PDT SUNDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 8 to 11 ft expected. For the Small Craft Advisory, north
  winds 20 to 30 kt with gusts up to 35 kt.

* WHERE...Small craft conditions will affect areas south of Port
  Orford into this afternoon. This evening through Sunday morning,
  hazardous seas warning conditions will affect areas south of
  Gold Beach, with small craft conditions for the rest of the
  area. 

* WHEN...For the Hazardous Seas Warning, from 5 PM this 
  afternoon to 11 AM PDT Sunday. For the Small Craft Advisory, 
  until 11 AM PDT Sunday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ356-012300-
/O.EXT.KMFR.SC.Y.0072.000000T0000Z-210704T1800Z/
/O.NEW.KMFR.SE.W.0042.210702T0000Z-210704T1800Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
215 AM PDT Thu Jul 1 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 AM PDT SUNDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO
11 AM PDT SUNDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 8 to 11 ft are expected. For the Small Craft Advisory,
  north winds 20 to 30 kt with gusts up to 35 kt.

* WHERE...Small craft conditions will affect areas south of Port
  Orford and beyond 3nm from shore, except at the coast south of 
  Ophir into this afternoon. This evening through Sunday morning, 
  hazardous seas warning conditions will affect areas south of 
  Nesika Beach and beyond 3 nm from shore, with small craft 
  conditions for the rest of the area.

* WHEN...For the Hazardous Seas Warning, from 5 PM this 
  afternoon to 11 AM PDT Sunday. For the Small Craft Advisory, 
  until 11 AM PDT Sunday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-012300-
/O.EXT.KMFR.SC.Y.0073.210702T0000Z-210704T1800Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
215 AM PDT Thu Jul 1 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 5 PM THIS AFTERNOON TO
11 AM PDT SUNDAY...

* WHAT...Steep seas 7 to 9 ft at 9 expected.

* WHERE...All areas.

* WHEN...From 5 PM this afternoon to 11 AM PDT Sunday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Visit us at https://www.weather.gov/Medford
9 follow-up statements
917 
WHUS76 KMFR 012107
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
207 PM PDT Thu Jul 1 2021

PZZ356-376-021015-
/O.CON.KMFR.SC.Y.0072.000000T0000Z-210704T1800Z/
/O.CON.KMFR.SE.W.0042.210702T0000Z-210704T1800Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
207 PM PDT Thu Jul 1 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
SUNDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 AM PDT SUNDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 35 kt and steep
  seas of 7 to 9 feet. For the Hazardous Seas Warning, very steep
  and hazardous seas of 10 to 11 ft are expected. 

* WHERE...Conditions will be hazardous to small craft for areas
  south of Port Orford into this evening. All areas will have
  conditions hazardous to small craft tonight through Sunday
  morning with warning level seas south of Nesika Beach and 
  beyond 3 nm from shore.

* WHEN...For the Hazardous Seas Warning, from 5 PM this 
  afternoon to 11 AM PDT Sunday. For the Small Craft Advisory, 
  until 11 AM PDT Sunday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-370-021015-
/O.CON.KMFR.SC.Y.0073.210702T0000Z-210704T1800Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
207 PM PDT Thu Jul 1 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 AM PDT SUNDAY...

* WHAT...North winds 15 to 25 kt and steep seas of 6 to 9 feet at
  8 to 9 seconds.

* WHERE...All areas.

* WHEN...From 5 PM this afternoon to 11 AM PDT Sunday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Visit us at https://www.weather.gov/Medford
925 
WHUS76 KMFR 020930
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
230 AM PDT Fri Jul 2 2021

PZZ356-376-022230-
/O.CON.KMFR.SE.W.0042.000000T0000Z-210704T1800Z/
/O.CON.KMFR.SC.Y.0072.000000T0000Z-210704T1800Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
230 AM PDT Fri Jul 2 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 11 AM PDT
   SUNDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
   SUNDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 35 kt and steep
  seas of 7 to 9 feet. For the Hazardous Seas Warning, very steep
  and hazardous seas of 10 to 12 ft are expected.

* WHERE...Hazardous Seas Warning conditions will occur from Port
  Orford south beyond 5 NM of the coast, but closer in near Gold
  Beach. Small Craft Advisory conditions will affect the remainder
  of the area. 

* WHEN...Until 11 AM PDT Sunday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-370-022230-
/O.CON.KMFR.SC.Y.0073.000000T0000Z-210704T1800Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
230 AM PDT Fri Jul 2 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
   SUNDAY...

* WHAT...North winds 15 to 25 kt and steep seas of 6 to 9 feet 
  at 8 to 9 seconds.

* WHERE...All areas.

* WHEN...Until 11 AM PDT Sunday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Visit us at https://www.weather.gov/Medford
706 
WHUS76 KMFR 022101
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
201 PM PDT Fri Jul 2 2021

PZZ356-376-031015-
/O.CON.KMFR.SE.W.0042.000000T0000Z-210704T1800Z/
/O.CON.KMFR.SC.Y.0072.000000T0000Z-210704T1800Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
201 PM PDT Fri Jul 2 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 11 AM PDT
SUNDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
SUNDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 35 kt with steep
  to very steep and hazardous wind driven seas of 7 to 11 ft. 

* WHERE...Very steep and hazardous seas are expected south of Port
  Orford and generally beyond 2 to 3 nm from shore. Conditions
  hazardous to small craft are expected for all other areas.

* WHEN...Until 11 AM PDT Sunday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-370-031015-
/O.CON.KMFR.SC.Y.0073.000000T0000Z-210704T1800Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
201 PM PDT Fri Jul 2 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
SUNDAY...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and steep
  seas 6 to 9 ft due to fresh swell.

* WHERE...All areas.

* WHEN...Until 11 AM PDT Sunday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Visit us at https://www.weather.gov/Medford
063 
WHUS76 KMFR 030935
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
235 AM PDT Sat Jul 3 2021

PZZ356-376-032245-
/O.EXT.KMFR.SE.W.0042.000000T0000Z-210705T0600Z/
/O.EXT.KMFR.SC.Y.0072.000000T0000Z-210705T0600Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
235 AM PDT Sat Jul 3 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 11 PM PDT SUNDAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT SUNDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 35 kt with 
  steep to very steep and hazardous wind driven seas of 7 to 11 
  ft.

* WHERE...Very steep and hazardous seas are expected south of
  Nesika Beach and generally beyond 5 nm from shore. Conditions 
  hazardous to small craft are expected for all other areas.

* WHEN...Until 11 PM PDT Sunday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-370-032245-
/O.EXT.KMFR.SC.Y.0073.000000T0000Z-210705T0600Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
235 AM PDT Sat Jul 3 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT SUNDAY...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and steep
  wind driven seas 6 to 9 ft.

* WHERE...All areas.

* WHEN...Until 11 PM PDT Sunday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Visit us at https://www.weather.gov/Medford
328 
WHUS76 KMFR 032028
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
128 PM PDT Sat Jul 3 2021

PZZ356-376-040930-
/O.EXT.KMFR.SE.W.0042.000000T0000Z-210705T0900Z/
/O.EXT.KMFR.SC.Y.0072.000000T0000Z-210707T0000Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
128 PM PDT Sat Jul 3 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 2 AM PDT MONDAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM PDT TUESDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 35 kt with steep
  to very steep and hazardous wind driven seas of 7 to 11 ft.

* WHERE...Very steep and hazardous seas are expected south of
  Nesika Beach and generally beyond 5 nm from shore through Sunday
  night. Conditions hazardous to small craft are expected for all
  other areas.

* WHEN...For the Hazardous Seas Warning, until 2 AM PDT Monday. 
  For the Small Craft Advisory, until 5 PM PDT Tuesday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-370-040930-
/O.EXT.KMFR.SC.Y.0073.000000T0000Z-210707T0000Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
128 PM PDT Sat Jul 3 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM PDT TUESDAY...

* WHAT...North winds 15 to 20 kt with gusts up to 25 kt and steep
  wind driven seas 6 to 9 ft.

* WHERE...All areas.

* WHEN...Until 5 PM PDT Tuesday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Visit us at https://www.weather.gov/Medford
446 
WHUS76 KMFR 040930
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
230 AM PDT Sun Jul 4 2021

PZZ356-376-042230-
/O.EXT.KMFR.SE.W.0042.000000T0000Z-210706T0600Z/
/O.EXT.KMFR.SC.Y.0072.000000T0000Z-210707T0600Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
230 AM PDT Sun Jul 4 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 11 PM PDT MONDAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT TUESDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 35 kt with steep
  to very steep and hazardous wind driven seas of 7 to 11 ft
  through Monday evening, then north winds 15 to 25 kt with steep
  seas 6 to 8 ft through Tuesday evening.

* WHERE...Very steep and hazardous seas are expected south of Gold
  Beach and generally beyond 5 to 10 nm from shore through Monday
  evening. Conditions hazardous to small craft are expected for 
  all other areas.

* WHEN...For the Hazardous Seas Warning, until 11 PM PDT Monday. 
  For the Small Craft Advisory, until 11 PM PDT Tuesday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-370-042230-
/O.EXT.KMFR.SC.Y.0073.000000T0000Z-210707T0600Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
230 AM PDT Sun Jul 4 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT TUESDAY...

* WHAT...North winds 15 to 25 kt and steep wind driven seas 6 to 8 
  ft.

* WHERE...All areas, but the strongest winds and highest seas will
  occur near Cape Blanco.

* WHEN...Until 11 PM PDT Tuesday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Visit us at https://www.weather.gov/Medford
846 
WHUS76 KMFR 042145
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
245 PM PDT Sun Jul 4 2021

PZZ356-376-051045-
/O.CON.KMFR.SE.W.0042.000000T0000Z-210706T0600Z/
/O.CON.KMFR.SC.Y.0072.000000T0000Z-210707T0600Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
245 PM PDT Sun Jul 4 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 11 PM PDT
MONDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT
TUESDAY...

* WHAT...North winds 20 to 30 kt with occasional gusts up to 35 kt
  with steep to very steep and hazardous, wind driven seas of 7 
  to 10 ft through Monday evening, then north winds 15 to 25 kt 
  with steep seas 6 to 8 ft through Tuesday evening.

* WHERE...Very steep and hazardous seas are expected south of Gold
  Beach and generally between 5 to 35 nm from shore through 
  Monday evening. Conditions hazardous to small craft are expected
  for all other areas.

* WHEN...For the Hazardous Seas Warning, until 11 PM PDT Monday. 
  For the Small Craft Advisory, until 11 PM PDT Tuesday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-370-051045-
/O.CON.KMFR.SC.Y.0073.000000T0000Z-210707T0600Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
245 PM PDT Sun Jul 4 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT
TUESDAY...

* WHAT...North winds 15 to 25 kt and steep wind driven seas 6 to 
  8 ft.

* WHERE...All areas, but the strongest winds and highest seas 
  will occur near Cape Blanco.

* WHEN...Until 11 PM PDT Tuesday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Visit us at https://www.weather.gov/Medford
332 
WHUS76 KMFR 050930
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
230 AM PDT Mon Jul 5 2021

PZZ356-376-052230-
/O.EXT.KMFR.SC.Y.0072.000000T0000Z-210707T0100Z/
/O.CON.KMFR.SE.W.0042.000000T0000Z-210706T0600Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
230 AM PDT Mon Jul 5 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM PDT TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS
   EVENING...

* WHAT...North winds 20 to 30 kt with occasional gusts up to 35 kt
  with steep to very steep and hazardous, wind driven seas of 7 to
  10 ft through Monday evening. North winds 15 to 25 kt Monday
  night, diminishing Tuesday. Steep seas 6 to 8 ft Monday night
  through Tuesday afternoon.

* WHERE...Very steep and hazardous seas are expected south of 
  Gold Beach and generally between 5 to 35 nm from shore through 
  Monday evening. Conditions hazardous to small craft are 
  expected for all other areas.

* WHEN...For the Hazardous Seas Warning, until 11 PM PDT this 
  evening. For the Small Craft Advisory, until 6 PM PDT Tuesday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-370-052230-
/O.EXT.KMFR.SC.Y.0073.000000T0000Z-210707T0100Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
230 AM PDT Mon Jul 5 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM PDT TUESDAY...

* WHAT...North winds 15 to 25 kt and steep wind driven seas 6 to 7 
  ft.

* WHERE...All areas, but the strongest winds and highest seas 
  will occur near Cape Blanco.

* WHEN...Until 6 PM PDT Tuesday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Visit us at https://www.weather.gov/Medford
400 
WHUS76 KMFR 052105
MWWMFR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
205 PM PDT Mon Jul 5 2021

PZZ356-376-061015-
/O.EXT.KMFR.SE.W.0042.000000T0000Z-210706T0000Z/
/O.EXT.KMFR.SC.Y.0072.000000T0000Z-210706T1800Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
205 PM PDT Mon Jul 5 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 5 PM PDT THIS
AFTERNOON...
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 AM PDT TUESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 7 to 9 ft at 8 seconds. For the Small Craft Advisory, north
  winds 15 to 25 kt with gusts up to 35 kt and seas 6 to 8 ft at 8 
  seconds.

* WHERE...Very steep and hazardous seas are expected south of 
  Gold Beach and generally between 5 to 35 nm from shore through 
  Monday evening. Conditions hazardous to small craft are 
  expected for all other areas.

* WHEN...For the Hazardous Seas Warning, until 5 PM PDT this 
  afternoon. For the Small Craft Advisory, until 11 AM PDT 
  Tuesday.

* IMPACTS...Very steep and hazardous seas could capsize or 
  damage vessels. Bar crossings will become especially 
  treacherous.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

PZZ350-370-061015-
/O.EXT.KMFR.SC.Y.0073.000000T0000Z-210706T1800Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
205 PM PDT Mon Jul 5 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 AM PDT TUESDAY...

* WHAT...North winds 15 to 20 kt with gusts up to 25 kt and seas 5
  to 7 ft at 8 seconds.

* WHERE...All areas, but the strongest winds and highest seas 
  will occur near Cape Blanco.

* WHEN...Until 11 AM PDT Tuesday.

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

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

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

What forecasters said that day

The local office's own words before this hazardous seas warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Medford, OR wrote its last area forecast discussion before this hazardous seas warning went out at Jun 30, 9:26 PM PDT, 4 hours 49 minutes earlier.

Area forecast discussion, Jun 30, 9:26 PM PDT, 4 hours 49 minutes before
Area Forecast Discussion
National Weather Service Medford OR
926 PM PDT Wed Jun 30 2021

.UPDATE...

Well, this evening was rather active weather wise with a fair
amount of thunderstorm activity over Lake County and portions of
eastern Klamath County in addition to the fire activity in
northern California. Thunderstorms stopped right on time at 4z
this evening, although a few stray cloud to ground flashes cannot
be ruled out over the next few hours. The other thing worth
mentioning are temperatures. Smoke and the cloud cover should have
something to say about the temperatures tonight and into
tomorrow, so we'll be taking another look at that for the next
forecast package issued later tonight.

-Smith

&&

.DISCUSSION.../Issued 257 PM PDT Wed Jun 30 2021/

Cumulus clouds continue to erupt and move into
Eastern Lake County. Day Cloud Phase Distinction RGB shows the
clouds beginning to glaciate. We should begin to observe at least
some intra-cloud lightning shortly, if not some stray down
strikes. There have been down strikes observed SE of Lake County.
Despite inverted V soundings, there is ample CAPE and modest
amounts (about 15kt EBWD) of shear. This should allow for just
enough organization to storms that they will not collapse on
themselves and cause strong wind gusts. With Precipitable water
values nearing 1" and most of that moisture is at or above 500 mb,
so the storms should have enough moisture to tap into to
eventually erode the dry boundary layer. Until that occurs,
expecting virga to be observed underneath the storms. Expecting
isolated storm coverage in Eastern Klamath and Modoc County, and
scattered thunderstorms in Lake County. Storms in Lake County
could linger into the late evening.

Smoke from the Lava Fire and Tenant Fire in Siskiyou County will
continue to spread across the region. This smoke could act as cloud
condensation nuclei, resulting in smaller cloud droplets in the
storms across the east side. The result of this could be that storms
across the east side have more trouble producing rain droplets. It's
very difficult to judge if there is enough smoke to set up this
cause and effect, but want to highlight the possibility in the event
rains don't reach the surface this evening.

Isolated thunderstorms will be possible again tomorrow, mainly in
Lake County. They could also occur along the Warner Mountains, but
the environment is less favorable in that area. In fact, the
environment appears less favorable overall as compared to today. It
may be the case that there is wide spread towering CU, but that
thunderstorms are few and far between.

Afternoon temperatures will be the least hot they have been on
Friday and with the influence of the marine layer, have really
subsided in Douglas County. Overnight lows are dropping such that we
concluded the Cascade and Siskiyou mountains are no longer need a
heat warning product. The same goes for Douglas County after this
afternoon. East of the Cascades, overnight lows are also providing
some relief such that we could downgrade the Warning to an Advisory.
This said, afternoon highs are still 15-20 degrees above normal and
there is still a substantial risk for heat related illnesses. See
NPWMFR for the latest changes to the heat products.

Ensemble solutions do remain an upper level trough trying to break
through the ridge in the extended. Have not really allowed this to
influence the forecast much and have kept a fairly persistent
forecast of conditions commonly observed under an upper level
ridge.

&&

.AVIATION...For the 01/00Z TAF Cycle...A deep and persistent marine
layer will maintain stratus and fog along the coast, including at
North Bend, and into lower portions of the Umpqua Valley through
Thursday morning. Only limited improvement is possible late this
afternoon before conditions deteriorate again this evening. Expect
persistent IFR/MVFR ceilings and visibility with some potential for
LIFR.

Farther inland, expect MVFR stratus to likely return around 09z.

VFR will prevail elsewhere, though wildfire smoke from the Lava and
Tennant fires could limit visibility in portions of NorCal and south-
central Oregon.

Isolated to scattered thunderstorms will continue to weaken this
evening from about Winter Rim and the Warner Mountains eastward.
-Spilde/Sven

&&

.MARINE...Updated 830 PM PDT Wednesday, 30 June 2021...A thermal
trough developing along the south Oregon coast into this evening
will remain in place through this weekend. It will strengthen over
time resulting in moderate to strong north winds and steep wind
driven seas mainly south of Cape Blanco. Seas may become very
steep late Thursday night or Friday, so we have a hazardous seas
watch in effect that continues into the weekend. -Spilde/Sven

&&

.FIRE WEATHER...Updated 200 PM PDT Wednesday 30 Jun 2021...The
strong high pressure responsible for the very hot temperatures has
moved farther to the east, now centered over the Canadian
Providences north of Montana. With this shift in the weather aloft,
the very hot temperatures will abate some, but will remain well
above normal through at least the 4th of July holiday. Smoke from
the Lava and Tennant wildfires will continue to affect areas near
and downwind of them, with some visibility reductions, especially in
central and eastern Siskiyou County. Expect smoke to spread
northeast and eastward into Klamath County and northeast Modoc
County this afternoon and evening with transport winds out of the
south to southwest.

Monsoonal moisture will filter into the region during the next few
days and this will result in at least a slight chance of
thunderstorms during the afternoons and evenings, focused east of
the Cascades, today through at least Saturday. Cloud bases are
expected to be high, resulting in mostly dry thunderstorms along
with gusty, erratic winds. For today, thunderstorms will be focused
along and east of Winter Rim across fire weather zone 625 and
eastern portions of 624 where we expect scattered thunderstorms to
develop this afternoon. A Red Flag Warning remains in effect for
these areas for abundant lightning on dry fuels through 9 pm this
evening. Isolated thunderstorms are possible across Modoc County as
well today, but the current forecast keeps thunderstorms north and
east of the Lava, Tennant, and Cutoff fires. Thunderstorm coverage
decreases Thursday, with scattered thunderstorms expected to remain
east of fire weather zone 625. Isolated thunderstorms are still
expected across eastern Klamath, Lake and Modoc counties on
Thursday, but coverage should be isolated. Friday into Saturday,
thunderstorm chances expand westward to include the Cascades,
Siskiyous and portions of western Siskiyou County. In addition to
hot temperatures and thunderstorms, there will be some enhanced
afternoon breezes with locally gusty conditions today and again on
Thursday. Expect another wind shift in the Shasta Valley this
afternoon, and likely again Thursday, where gusty south winds are
expected to shift to north/northwesterly around 1600-1800. /BR-y

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Heat Advisory until 11 PM PDT Saturday for ORZ029>031.
     Heat Advisory until 11 PM PDT Saturday for ORZ024-026.
     Heat Advisory until 11 PM PDT this evening for ORZ023-025.

CA...Heat Advisory until 11 PM PDT Saturday for CAZ081>085.
     Heat Advisory until 11 PM PDT Saturday for CAZ080.

Pacific Coastal Waters...Small Craft Advisory from 2 AM Thursday to 5 AM PDT Sunday for
     PZZ350-356-370-376.
     Hazardous Seas Watch from late Thursday night through late
     Saturday night for PZZ370-376.

The office that day

Everything else NWS Medford, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 30, 6:03 PM PDTSpecial Weather StatementMFR57 min

Nearby

Hazardous Seas Warnings in Oregon, 2021Every hazardous seas warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.