Alert archive / California / Hazardous Seas Warnings in 2020

Hazardous Seas Warning 21, NWS Eureka, CA

September 28, 2020

NWS Eureka, CA issued this hazardous seas warning at Sep 28, 2020, 3:01 AM PDT. It was in force for 9 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
Sep 28, 2020, 3:01 AM PDT (10:01 UTC)
Expired
Sep 28, 2020, 12:00 PM PDT
In force
9 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

627 
WHUS76 KEKA 281001
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
301 AM PDT Mon Sep 28 2020

PZZ475-281600-
/O.CAN.KEKA.SE.W.0020.000000T0000Z-200928T1200Z/
/O.EXB.KEKA.SC.Y.0077.000000T0000Z-200928T1600Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
301 AM PDT Mon Sep 28 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM PDT THIS MORNING...
...HAZARDOUS SEAS WARNING IS CANCELLED...

* WHAT...Seas 7 to 11 feet.

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

* WHEN...Until 9 AM PDT this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ470-281815-
/O.EXP.KEKA.GL.W.0022.000000T0000Z-200928T1000Z/
/O.NEW.KEKA.SE.W.0021.200928T1001Z-200928T1900Z/
Pt St George to Cape Mendocino 10 to 60 nm-
301 AM PDT Mon Sep 28 2020

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL NOON PDT TODAY...
...GALE WARNING HAS EXPIRED...

* WHAT...Very steep and hazardous seas 8 to 12 feet.

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

* WHEN...Until noon PDT today.

* 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.

&&

$$

PZZ450-281600-
/O.EXT.KEKA.SC.Y.0077.000000T0000Z-200928T1600Z/
Pt St George to Cape Mendocino out 10 nm-
301 AM PDT Mon Sep 28 2020

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PDT THIS
MORNING...

* WHAT...Seas 7 to 10 feet.

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

* WHEN...Until 9 AM PDT this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
2 follow-up statements
301 
WHUS76 KEKA 281606
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
906 AM PDT Mon Sep 28 2020

PZZ450-475-281715-
/O.EXP.KEKA.SC.Y.0077.000000T0000Z-200928T1600Z/
Pt St George to Cape Mendocino out 10 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
906 AM PDT Mon Sep 28 2020

...SMALL CRAFT ADVISORY HAS EXPIRED...

$$

PZZ470-281900-
/O.CON.KEKA.SE.W.0021.000000T0000Z-200928T1900Z/
Pt St George to Cape Mendocino 10 to 60 nm-
906 AM PDT Mon Sep 28 2020

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL NOON TODAY...

* WHAT...Steep and hazardous seas 8 to 10 feet.

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

* WHEN...Until noon today.

* 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.

$$
442 
WHUS76 KEKA 281912
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1212 PM PDT Mon Sep 28 2020

PZZ470-282015-
/O.EXP.KEKA.SE.W.0021.000000T0000Z-200928T1900Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1212 PM PDT Mon Sep 28 2020

...HAZARDOUS SEAS WARNING HAS EXPIRED...

$$

The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 27, 7:20 PM PDTHazardous Seas WarningEKA8 hr
Sep 27, 9:06 PM PDTExcessive Heat WatchEKADel Norte, Humboldt, Mendocino6 hr
Sep 27, 10:48 PM PDTSmall Craft AdvisoryEKA10 hr
Sep 28, 3:30 AM PDTHeat AdvisoryEKADel Norte, Humboldt, Mendocino15 hr

Nearby

Hazardous Seas Warnings in California, 2020Every hazardous seas warning in 2020

Sources

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