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IEM VTEC Product Browser

This application allows easy navigation of National Weather Service issued products with Valid Time Event Coding (VTEC).

13 Nov 2024 Update: The tool was updated to use non-hash link style URLs. A shim is in place to translate the old URLs to the new ones, so nothing should be broken (famous last words). This was done to allow the HTML5 History API to provide a better user experience.

Tab Functionality:
Above this section, you will notice six selectable tabs. Click on the tab to show the information.

  • Help: This page!
  • Event Info: Details of the selected event.
  • Text Data: The raw text product for this event.
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  • Storm Reports: Local Storm Reports.
  • List Events: List all events of the given phenomena, significance, year, and issuing office.

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2025 [KSEW] SEATTLE Marine Dense Fog (MF) Advisory (Y) Number 1

Listing of Counties/Parishes/Zones Included in Product

RADAR Composite at Issuance Time

Storm Based Warning History

035 
WHUS76 KSEW 251500
MWWSEW

URGENT - MARINE WEATHER MESSAGE
National Weather Service Seattle WA
800 AM PDT Tue Mar 25 2025

PZZ132-134-135-251800-
/O.NEW.KSEW.MF.Y.0001.250325T1500Z-250325T1800Z/
East Entrance U.S. Waters Strait Of Juan De Fuca-Admiralty Inlet-
Puget Sound and Hood Canal-
800 AM PDT Tue Mar 25 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PDT THIS MORNING...

* WHAT...Dense fog will reduce visibility less than 1 statute mile.

* WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca, 
  Admiralty Inlet and Puget Sound and Hood Canal.

* WHEN...Until 11 AM PDT this morning.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

PZZ150-153-156-170-173-176-252300-
/O.CON.KSEW.GL.A.0005.250327T0600Z-250328T1200Z/
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm-
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To
60 Nm-
800 AM PDT Tue Mar 25 2025

...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH
LATE THURSDAY NIGHT...

* WHAT...South winds 25 to 35 kt and seas 18 to 23 ft possible.

* WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater 
  out to 60 nm.

* WHEN...From Wednesday evening through late Thursday night.

* IMPACTS...Strong winds can cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased, but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/seattle
Permalink to 202503251500-KSEW-WHUS76-MWWSEW
035 
WHUS76 KSEW 251500
MWWSEW

URGENT - MARINE WEATHER MESSAGE
National Weather Service Seattle WA
800 AM PDT Tue Mar 25 2025

PZZ132-134-135-251800-
/O.NEW.KSEW.MF.Y.0001.250325T1500Z-250325T1800Z/
East Entrance U.S. Waters Strait Of Juan De Fuca-Admiralty Inlet-
Puget Sound and Hood Canal-
800 AM PDT Tue Mar 25 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PDT THIS MORNING...

* WHAT...Dense fog will reduce visibility less than 1 statute mile.

* WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca, 
  Admiralty Inlet and Puget Sound and Hood Canal.

* WHEN...Until 11 AM PDT this morning.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

PZZ150-153-156-170-173-176-252300-
/O.CON.KSEW.GL.A.0005.250327T0600Z-250328T1200Z/
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm-
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To
60 Nm-
800 AM PDT Tue Mar 25 2025

...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH
LATE THURSDAY NIGHT...

* WHAT...South winds 25 to 35 kt and seas 18 to 23 ft possible.

* WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater 
  out to 60 nm.

* WHEN...From Wednesday evening through late Thursday night.

* IMPACTS...Strong winds can cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased, but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/seattle

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Storm Reports within Product Polygon

This table lists other events issued by the selected office for the selected year. Click on the row to select that event.