Alert archive / California / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 41, NWS Eureka, CA

July 22, 2021

NWS Eureka, CA issued this hazardous seas warning at Jul 22, 2021, 2:19 AM PDT. It was in force for 12 hr. 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 22, 2021, 2:19 AM PDT (09:19 UTC)
Expired
Jul 22, 2021, 2:41 PM PDT
In force
12 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

664 
WHUS76 KEKA 220919
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
219 AM PDT Thu Jul 22 2021

PZZ475-221730-
/O.UPG.KEKA.SC.Y.0076.000000T0000Z-210724T1900Z/
/O.NEW.KEKA.SE.W.0041.210722T0919Z-210724T1000Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
219 AM PDT Thu Jul 22 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 3 AM PDT SATURDAY...

* WHAT...Very steep and hazardous seas 9 to 12 feet. North winds
  20 to 30 kt with local gusts to 40 kt downwind of Cape  
  Mendocino.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...Until 3 AM PDT Saturday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ450-221730-
/O.EXT.KEKA.SC.Y.0076.000000T0000Z-210724T1000Z/
Pt St George to Cape Mendocino out 10 nm-
219 AM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT SATURDAY...

* WHAT...North winds 10 to 20 kt, with gusts up to 35 kt downwind
  of Pt St George. Seas 6 to 10 feet.

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

* WHEN...Until 3 AM PDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ455-221730-
/O.EXT.KEKA.SC.Y.0074.000000T0000Z-210724T1000Z/
Cape Mendocino to Pt Arena out 10 nm-
219 AM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT SATURDAY...

* WHAT...Northwest winds 15 to 25 kt, with gusts up to 40 kt
  downwind of Cape Mendocino. Seas 7 to 11 feet.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...Until 3 AM PDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ470-221730-
/O.EXT.KEKA.SC.Y.0076.000000T0000Z-210724T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
219 AM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT SATURDAY...

* WHAT...North winds 20 to 30 kt, with local gusts up to 40 kt
  downwind of Pt St George. Seas 8 to 10 feet.

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

* WHEN...Until 3 AM PDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
2 follow-up statements
159 
WHUS76 KEKA 221602
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
902 AM PDT Thu Jul 22 2021

PZZ475-230015-
/O.CON.KEKA.SE.W.0041.000000T0000Z-210724T1000Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
902 AM PDT Thu Jul 22 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM SATURDAY...

* WHAT...Very steep and hazardous seas 9 to 12 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...Until 3 AM Saturday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels 
should prepare for rough seas and consider remaining in port until 
hazardous seas subside.

$$

PZZ450-230015-
/O.CON.KEKA.SC.Y.0076.000000T0000Z-210724T1000Z/
Pt St George to Cape Mendocino out 10 nm-
902 AM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM SATURDAY...

* WHAT...North winds 10 to 20 kt with occasional gusts to 35 kt and 
  seas 6 to 9 feet.

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

* WHEN...Until 3 AM Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

$$

PZZ455-230015-
/O.CON.KEKA.SC.Y.0074.000000T0000Z-210724T1000Z/
Cape Mendocino to Pt Arena out 10 nm-
902 AM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM SATURDAY...

* WHAT...Northwest winds 15 to 25 kt with occasional gusts to 40 kt 
  and seas 7 to 10 feet.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...Until 3 AM Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

$$

PZZ470-230015-
/O.CON.KEKA.SC.Y.0076.000000T0000Z-210724T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
902 AM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM SATURDAY...

* WHAT...North winds 20 to 30 kt with occasional gusts to 35 kt and 
  seas 8 to 10 feet.

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

* WHEN...Until 3 AM Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

$$
199 
WHUS76 KEKA 222141
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
241 PM PDT Thu Jul 22 2021

PZZ475-230545-
/O.CAN.KEKA.SE.W.0041.000000T0000Z-210724T1000Z/
/O.EXB.KEKA.SC.Y.0074.000000T0000Z-210725T1900Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
241 PM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON SUNDAY...
...HAZARDOUS SEAS WARNING IS CANCELLED...

* WHAT...Northwest winds 20 to 30 kt with occasional gusts to 35 
  kt and seas 7 to 12 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...Until noon Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

$$

PZZ470-230545-
/O.EXT.KEKA.SC.Y.0076.000000T0000Z-210725T1900Z/
Pt St George to Cape Mendocino 10 to 60 nm-
241 PM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL NOON SUNDAY...

* WHAT...North winds 20 to 30 kt with occasional gusts to 35 kt 
  and seas 8 to 13 feet.

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

* WHEN...Until noon Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

$$

PZZ450-230545-
/O.CON.KEKA.SC.Y.0076.000000T0000Z-210724T1000Z/
Pt St George to Cape Mendocino out 10 nm-
241 PM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM SATURDAY...

* WHAT...Northwest winds 5 to 15 kt with gusts to 25 kt and seas 
  5 to 8 feet.

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

* WHEN...Until 3 AM Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

$$

PZZ455-230545-
/O.CON.KEKA.SC.Y.0074.000000T0000Z-210724T1000Z/
Cape Mendocino to Pt Arena out 10 nm-
241 PM PDT Thu Jul 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM SATURDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts to 30 kt and seas
  5 to 8 feet.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...Until 3 AM Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

$$

Nearby

Hazardous Seas Warnings in California, 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.