Alert archive / Washington / Gale Warnings in 2025
Gale Warning 2, NWS Seattle, WA
NWS Seattle, WA issued this gale warning at Jan 30, 2025, 2:31 PM PST. It took effect at Jan 31, 2025, 2:05 PM PST. It was in force for 13 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
- Jan 30, 2025, 2:31 PM PST (22:31 UTC)
- In effect from
- Jan 31, 2025, 2:05 PM PST
- Expired
- Feb 1, 2025, 2:38 AM PST
- In force
- 13 hr
- Issued by
- NWS Seattle, WA
The text
As transmitted.
755 WHUS76 KSEW 302231 MWWSEW URGENT - MARINE WEATHER MESSAGE National Weather Service Seattle WA 231 PM PST Thu Jan 30 2025 PZZ132-310645- /O.CON.KSEW.SC.Y.0007.250131T0600Z-250201T0100Z/ /O.NEW.KSEW.GL.W.0002.250201T0100Z-250201T1200Z/ East Entrance U.S. Waters Strait Of Juan De Fuca- 231 PM PST Thu Jan 30 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 5 PM PST FRIDAY... ...GALE WARNING IN EFFECT FROM 5 PM FRIDAY TO 4 AM PST SATURDAY... * WHAT...For the Small Craft Advisory, southeast winds 15 to 25 kt. For the Gale Warning, west winds 25 to 35 kt. * WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...For the Small Craft Advisory, from 10 PM this evening to 5 PM PST Friday. For the Gale Warning, from 5 PM Friday to 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ131-310645- /O.NEW.KSEW.GL.W.0002.250201T0100Z-250201T1200Z/ Central U.S. Waters Strait Of Juan De Fuca- 231 PM PST Thu Jan 30 2025 ...GALE WARNING IN EFFECT FROM 5 PM FRIDAY TO 4 AM PST SATURDAY... * WHAT...West winds 25 to 35 kt. * WHERE...Central U. S. Waters Strait Of Juan De Fuca. * WHEN...From 5 PM Friday to 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ150-153-156-170-173-176-310645- /O.EXT.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ 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- 231 PM PST Thu Jan 30 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...Southwest winds 20 to 30 kt and seas 7 to 12 ft. * WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater out to 60 nm. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ133-134-310645- /O.CON.KSEW.SC.Y.0007.250131T0600Z-250201T0100Z/ Northern Inland Waters Including The San Juan Islands- Admiralty Inlet- 231 PM PST Thu Jan 30 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 5 PM PST FRIDAY... * WHAT...Southeast winds 15 to 25 kt. * WHERE...Northern Inland Waters Including The San Juan Islands and Admiralty Inlet. * WHEN...From 10 PM this evening to 5 PM PST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ For more information from the National Weather Service visit http://weather.gov/seattle
7 follow-up statements
496 WHUS76 KSEW 310435 MWWSEW URGENT - MARINE WEATHER MESSAGE National Weather Service Seattle WA 835 PM PST Thu Jan 30 2025 PZZ132-311245- /O.CON.KSEW.SC.Y.0007.250131T0600Z-250201T0100Z/ /O.CON.KSEW.GL.W.0002.250201T0100Z-250201T1200Z/ East Entrance U.S. Waters Strait Of Juan De Fuca- 835 PM PST Thu Jan 30 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PST FRIDAY... ...GALE WARNING REMAINS IN EFFECT FROM 5 PM FRIDAY TO 4 AM PST SATURDAY... * WHAT...For the Small Craft Advisory, southeast winds 15 to 25 kt. For the Gale Warning, west winds 25 to 35 kt. * WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...For the Small Craft Advisory, until 5 PM PST Friday. For the Gale Warning, from 5 PM Friday to 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ131-311245- /O.CON.KSEW.GL.W.0002.250201T0100Z-250201T1200Z/ Central U.S. Waters Strait Of Juan De Fuca- 835 PM PST Thu Jan 30 2025 ...GALE WARNING REMAINS IN EFFECT FROM 5 PM FRIDAY TO 4 AM PST SATURDAY... * WHAT...West winds 25 to 35 kt. * WHERE...Central U. S. Waters Strait Of Juan De Fuca. * WHEN...From 5 PM Friday to 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ150-153-156-170-173-176-311245- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ 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- 835 PM PST Thu Jan 30 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...Southwest winds 20 to 30 kt and seas 7 to 12 ft. * WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater out to 60 nm. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ133-134-311245- /O.CON.KSEW.SC.Y.0007.250131T0600Z-250201T0100Z/ Northern Inland Waters Including The San Juan Islands- Admiralty Inlet- 835 PM PST Thu Jan 30 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PST FRIDAY... * WHAT...Southeast winds 15 to 25 kt. * WHERE...Northern Inland Waters Including The San Juan Islands and Admiralty Inlet. * WHEN...Until 5 PM PST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ For more information from the National Weather Service visit http://weather.gov/seattle
219 WHUS76 KSEW 311100 MWWSEW URGENT - MARINE WEATHER MESSAGE National Weather Service Seattle WA 300 AM PST Fri Jan 31 2025 PZZ132-311900- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T0100Z/ /O.CON.KSEW.GL.W.0002.250201T0100Z-250201T1200Z/ East Entrance U.S. Waters Strait Of Juan De Fuca- 300 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PST THIS AFTERNOON... ...GALE WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 4 AM PST SATURDAY... * WHAT...For the Small Craft Advisory, southeast winds 15 to 25 kt. For the Gale Warning, west winds 25 to 35 kt. * WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...For the Small Craft Advisory, until 5 PM PST Friday. For the Gale Warning, from 5 PM Friday to 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ131-311900- /O.CON.KSEW.GL.W.0002.250201T0100Z-250201T1200Z/ Central U.S. Waters Strait Of Juan De Fuca- 300 AM PST Fri Jan 31 2025 ...GALE WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 4 AM PST SATURDAY... * WHAT...West winds 25 to 35 kt. * WHERE...Central U. S. Waters Strait Of Juan De Fuca. * WHEN...From 5 PM Friday to 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ110-311900- /O.EXB.KSEW.SC.Y.0007.250131T1100Z-250202T0000Z/ Grays Harbor Bar- 300 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Combined seas 10 to 12 ft. Bar conditions rough. Maximum ebb currents will occur around 545 AM Friday, 545 PM Friday, and 630 AM Saturday. The Friday evening ebb will be strong. * WHERE...Grays Harbor Bar. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory for rough bar means that wave conditions are expected to be hazardous to small craft in or near harbor entrances. && $$ PZZ130-311900- /O.EXB.KSEW.SC.Y.0007.250131T1100Z-250201T0900Z/ West Entrance U.S. Waters Strait Of Juan De Fuca- 300 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM PST SATURDAY... * WHAT...Southeast winds 15 to 25 kt becoming southwest 20 to 30 kt late this afternoon. Seas 6 to 11 ft. * WHERE...West Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 1 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ135-311900- /O.EXB.KSEW.SC.Y.0007.250131T2200Z-250201T0700Z/ Puget Sound and Hood Canal- 300 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PST THIS EVENING... * WHAT...South winds 20 to 30 kt. * WHERE...Puget Sound and Hood Canal. * WHEN...From 2 PM this afternoon to 11 PM PST this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ150-153-156-170-173-176-311900- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm- Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- 300 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...Southeast winds 20 to 30 kt becoming westerly late this afternoon. Seas 9 to 12 ft. * WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater out to 60 nm. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ133-134-311900- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T0100Z/ Northern Inland Waters Including The San Juan Islands- Admiralty Inlet- 300 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PST THIS AFTERNOON... * WHAT...Southeast winds 15 to 25 kt. * WHERE...Northern Inland Waters Including The San Juan Islands and Admiralty Inlet. * WHEN...Until 5 PM PST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ For more information from the National Weather Service visit http://weather.gov/seattle
621 WHUS76 KSEW 311701 MWWSEW URGENT - MARINE WEATHER MESSAGE National Weather Service Seattle WA 901 AM PST Fri Jan 31 2025 PZZ132-010100- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T0100Z/ /O.CON.KSEW.GL.W.0002.250201T0100Z-250201T1200Z/ East Entrance U.S. Waters Strait Of Juan De Fuca- 901 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PST THIS AFTERNOON... ...GALE WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 4 AM PST SATURDAY... * WHAT...For the Small Craft Advisory, southeast winds 15 to 25 kt. For the Gale Warning, west winds 25 to 35 kt. * WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...For the Small Craft Advisory, until 5 PM PST this afternoon. For the Gale Warning, from 5 PM this afternoon to 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ131-010100- /O.CON.KSEW.GL.W.0002.250201T0100Z-250201T1200Z/ Central U.S. Waters Strait Of Juan De Fuca- 901 AM PST Fri Jan 31 2025 ...GALE WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 4 AM PST SATURDAY... * WHAT...West winds 25 to 35 kt. * WHERE...Central U. S. Waters Strait Of Juan De Fuca. * WHEN...From 5 PM this afternoon to 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ150-153-156-170-173-176-010100- /O.EXT.KSEW.SC.Y.0007.000000T0000Z-250202T0000Z/ Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm- Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- 901 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...West winds 20 to 30 kt and seas 8 to 13 ft. * WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater out to 60 nm. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ110-010100- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250202T0000Z/ Grays Harbor Bar- 901 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Combined seas 10 to 12 ft. Bar conditions rough. Maximum ebb currents will occur around 545 PM Friday, and 630 AM Saturday. The Friday evening ebb will be strong. * WHERE...Grays Harbor Bar. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft especially when navigating in or near harbor entrances. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory for rough bar means that wave conditions are expected to be hazardous to small craft in or near harbor entrances. && $$ PZZ133-134-010100- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T0100Z/ Northern Inland Waters Including The San Juan Islands- Admiralty Inlet- 901 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PST THIS AFTERNOON... * WHAT...Southeast winds 20 to 30 kt. * WHERE...Northern Inland Waters Including The San Juan Islands and Admiralty Inlet. * WHEN...Until 5 PM PST this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ130-010100- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T0900Z/ West Entrance U.S. Waters Strait Of Juan De Fuca- 901 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM PST SATURDAY... * WHAT...West winds 20 to 30 kt and seas 6 to 11 ft. * WHERE...West Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 1 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ135-010100- /O.CON.KSEW.SC.Y.0007.250131T2200Z-250201T0700Z/ Puget Sound and Hood Canal- 901 AM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PST THIS EVENING... * WHAT...South winds 20 to 30 kt. * WHERE...Puget Sound and Hood Canal. * WHEN...From 2 PM this afternoon to 11 PM PST this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ For more information from the National Weather Service visit http://weather.gov/seattle
239 WHUS76 KSEW 312205 MWWSEW URGENT - MARINE WEATHER MESSAGE National Weather Service Seattle WA 205 PM PST Fri Jan 31 2025 PZZ132-010615- /O.CAN.KSEW.SC.Y.0007.000000T0000Z-250201T0100Z/ /O.EXT.KSEW.GL.W.0002.250131T2205Z-250201T1200Z/ East Entrance U.S. Waters Strait Of Juan De Fuca- 205 PM PST Fri Jan 31 2025 ...GALE WARNING NOW IN EFFECT UNTIL 4 AM PST SATURDAY... ...SMALL CRAFT ADVISORY IS CANCELLED... * WHAT...West winds 30 to 40 kt. * WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ131-010615- /O.EXT.KSEW.GL.W.0002.250131T2205Z-250201T1200Z/ Central U.S. Waters Strait Of Juan De Fuca- 205 PM PST Fri Jan 31 2025 ...GALE WARNING NOW IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...West winds 30 to 40 kt. * WHERE...Central U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ133-134-010615- /O.EXT.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ Northern Inland Waters Including The San Juan Islands- Admiralty Inlet- 205 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...Southwest winds 25 to 30 kt. * WHERE...Northern Inland Waters Including The San Juan Islands and Admiralty Inlet. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ130-010615- /O.EXT.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ West Entrance U.S. Waters Strait Of Juan De Fuca- 205 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...West winds 20 to 30 kt and seas 6 to 11 ft. * WHERE...West Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ110-010615- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250202T0000Z/ Grays Harbor Bar- 205 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Combined seas 10 to 12 ft. Bar conditions rough. Maximum ebb currents will occur around 545 PM Friday, 630 AM Saturday and 630 PM Saturday. The evening ebbs will be strong. * WHERE...Grays Harbor Bar. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft especially when navigating in or near harbor entrances. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory for rough bar means that wave conditions are expected to be hazardous to small craft in or near harbor entrances. && $$ PZZ150-153-156-170-173-176-010615- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250202T0000Z/ Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm- Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- 205 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...West winds 20 to 30 kt and seas 8 to 13 ft. * WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater out to 60 nm. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ135-010615- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T0700Z/ Puget Sound and Hood Canal- 205 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PST THIS EVENING... * WHAT...Southwest winds 15 to 25 kt. * WHERE...Puget Sound and Hood Canal. * WHEN...Until 11 PM PST this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ For more information from the National Weather Service visit http://weather.gov/seattle
489 WHUS76 KSEW 010438 MWWSEW URGENT - MARINE WEATHER MESSAGE National Weather Service Seattle WA 838 PM PST Fri Jan 31 2025 PZZ131-132-011200- /O.CON.KSEW.GL.W.0002.000000T0000Z-250201T1200Z/ Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca- 838 PM PST Fri Jan 31 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...West winds 35 to 45 kt. * WHERE...Central U. S. Waters Strait Of Juan De Fuca and East Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ110-011245- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250202T0000Z/ Grays Harbor Bar- 838 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Combined seas 10 to 12 ft. Bar conditions rough. Maximum ebb currents will occur around 630 AM Saturday, 630 PM Saturday, and 700 AM Sunday. The evening ebb on Saturday will be strong. * WHERE...Grays Harbor Bar. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft especially when navigating in or near harbor entrances. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory for rough bar means that wave conditions are expected to be hazardous to small craft in or near harbor entrances. && $$ PZZ150-153-156-170-173-176-011245- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250202T0000Z/ Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm- Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- 838 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...West winds 20 to 30 kt and seas 9 to 13 ft. * WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater out to 60 nm. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ133-134-011200- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ Northern Inland Waters Including The San Juan Islands- Admiralty Inlet- 838 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...West winds 25 to 30 kt. * WHERE...Northern Inland Waters Including The San Juan Islands and Admiralty Inlet. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ130-011200- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ West Entrance U.S. Waters Strait Of Juan De Fuca- 838 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...West winds 20 to 30 kt and seas 8 to 11 ft. * WHERE...West Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ135-010700- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T0700Z/ Puget Sound and Hood Canal- 838 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PST THIS EVENING... * WHAT...Southwest winds 20 to 30 kt. * WHERE...Puget Sound and Hood Canal. * WHEN...Until 11 PM PST this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ For more information from the National Weather Service visit http://weather.gov/seattle
491 WHUS76 KSEW 010606 MWWSEW URGENT - MARINE WEATHER MESSAGE National Weather Service Seattle WA 1006 PM PST Fri Jan 31 2025 PZZ131-132-011200- /O.CON.KSEW.GL.W.0002.000000T0000Z-250201T1200Z/ Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca- 1006 PM PST Fri Jan 31 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...West winds 35 to 45 kt. * WHERE...Central U. S. Waters Strait Of Juan De Fuca and East Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. && $$ PZZ135-011200- /O.EXT.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ Puget Sound and Hood Canal- 1006 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...Southwest winds 20 to 30 kt. * WHERE...Puget Sound and Hood Canal. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ110-011415- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250202T0000Z/ Grays Harbor Bar- 1006 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Combined seas 10 to 12 ft. Bar conditions rough. Maximum ebb currents will occur around 630 AM Saturday, 630 PM Saturday, and 700 AM Sunday. The evening ebb on Saturday will be strong. * WHERE...Grays Harbor Bar. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft especially when navigating in or near harbor entrances. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory for rough bar means that wave conditions are expected to be hazardous to small craft in or near harbor entrances. && $$ PZZ150-153-156-170-173-176-011415- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250202T0000Z/ 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- 1006 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...West winds 20 to 30 kt and seas 9 to 13 ft. * WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater out to 60 nm. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ133-134-011200- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ Northern Inland Waters Including The San Juan Islands- Admiralty Inlet- 1006 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...West winds 25 to 30 kt. * WHERE...Northern Inland Waters Including The San Juan Islands and Admiralty Inlet. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ130-011200- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ West Entrance U.S. Waters Strait Of Juan De Fuca- 1006 PM PST Fri Jan 31 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...West winds 20 to 30 kt and seas 8 to 11 ft. * WHERE...West Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ For more information from the National Weather Service visit http://weather.gov/seattle
397 WHUS76 KSEW 011038 MWWSEW URGENT - MARINE WEATHER MESSAGE National Weather Service Seattle WA 238 AM PST Sat Feb 1 2025 PZZ131-132-011800- /O.CAN.KSEW.GL.W.0002.000000T0000Z-250201T1200Z/ /O.EXB.KSEW.SC.Y.0007.000000T0000Z-250201T1800Z/ Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca- 238 AM PST Sat Feb 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING... ...GALE WARNING IS CANCELLED... * WHAT...West winds 15 to 25 kt. * WHERE...Central U. S. Waters Strait Of Juan De Fuca and East Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 10 AM PST this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ133>135-011145- /O.CAN.KSEW.SC.Y.0007.000000T0000Z-250201T1200Z/ Northern Inland Waters Including The San Juan Islands- Admiralty Inlet-Puget Sound and Hood Canal- 238 AM PST Sat Feb 1 2025 ...SMALL CRAFT ADVISORY IS CANCELLED... Winds have eased below advisory levels. $$ PZZ150-153-156-170-173-176-011845- /O.EXT.KSEW.SC.Y.0007.000000T0000Z-250202T0600Z/ Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm- Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- 238 AM PST Sat Feb 1 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...West winds 15 to 30 kt and seas 9 to 13 ft. * WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater out to 60 nm. * WHEN...Until 10 PM PST this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ130-011800- /O.EXT.KSEW.SC.Y.0007.000000T0000Z-250201T1800Z/ West Entrance U.S. Waters Strait Of Juan De Fuca- 238 AM PST Sat Feb 1 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...West winds 15 to 25 kt and seas 8 to 11 ft. * WHERE...West Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...Until 10 AM PST this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ PZZ110-011845- /O.CON.KSEW.SC.Y.0007.000000T0000Z-250202T0000Z/ Grays Harbor Bar- 238 AM PST Sat Feb 1 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * WHAT...Combined seas 10 to 12 ft subsiding to 8 or 9 ft tonight. Bar conditions rough becoming moderate tonight. Maximum ebb currents will occur around 630 AM Saturday, 630 PM Saturday, and 700 AM Sunday. The evening ebb on Saturday will be strong. * WHERE...Grays Harbor Bar. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft especially when navigating in or near harbor entrances. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory for rough bar means that wave conditions are expected to be hazardous to small craft in or near harbor entrances. && $$ For more information from the National Weather Service visit http://weather.gov/seattle
What forecasters said that day
The local office's own words before this gale warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Seattle, WA wrote its last area forecast discussion before this gale warning went out at Jan 30, 8:47 AM PST, 5 hours 44 minutes earlier.
Area forecast discussion, Jan 30, 8:47 AM PST, 5 hours 44 minutes before
Area Forecast Discussion
National Weather Service Seattle WA
847 AM PST Thu Jan 30 2025
.UPDATE...Stratus continues for the lowlands of Western Washington
this morning with increasing high clouds ahead of the next frontal
system approaching the area. Dry conditions for the majority of
today with rain increasing along the Olympic Peninsula beginning
later this afternoon and sliding east this evening. No major
forecast updates this morning.
&&
.SYNOPSIS...A frontal system will bring lowland rain and heavier
mountain snow tonight through Friday night. An upper low sliding
southwards across British Columbia will usher in a colder pattern
along with the potential for lowland snow Saturday into early
next week.
&&
.SHORT TERM /TODAY THROUGH SATURDAY/...Today begins what will be a
significant shift in the weather pattern from recent weeks. Deep
upper troughing digging southward from the Alaska panhandle will
merge with some energy offshore to carve out a broad, cold upper
trough over the region by the weekend as strong upper ridging
builds upstream over the Aleutians. This is shaping up to be an
impactful situation in terms of winter weather. So, let's break
down the general sequence of events that are expected as well as
some of the probabilities and uncertainties involved.
What's left of an upper level ridge today will give way to
an approaching frontal system. Rain associated with this front
will reach coastal areas late this afternoon or early evening and
spread inland overnight. Initially, snow levels will be in the
3000 to 4000 foot range as milder air associated with the system
infiltrates the region. The front is expected to slow and stall
somewhat offshore as some fairly healthy QPF (the most we've seen
in weeks) spreads over the area. This will translate to some
significant snowfall in the passes. The heavier snowfall will be
initially over the higher passes, but snowfall throughout the
event will warrant converting the existing Winter Storm Watch for
the Cascades above 3000 feet to a warning. Storm total snowfall
between Thursday night and Saturday will range from around a foot
at Snoqualmie Pass to 2 feet or more at Stevens Pass and Mount
Baker.
For the lowlands, we're talking rain Thursday night through much
of Friday evening. But then significant changes occur. Colder air
follows a front Friday night with 1000-850 millibar thicknesses
falling below the crucial 1300 meter threshold and 850 millibar
temperatures dropping to -7 or -8 C. Models are advertising a
fairly potent convergence zone Friday night into Saturday morning.
The numbers outlined above combined with the convergence zone's
ability to draw snow levels locally downward points toward
increasing probabilities for accumulating lowland
snowfall...especially Snohomish County northward. NBM
probabilities show a 50-70% chance of a fraction of an inch from
north King county northward by mid-morning Saturday. Those
percentages fall to 20-30% for an inch of accumulation. But keep
in mind that convergence banding can play a significant role in
localized higher amounts and this feeds uncertainty. A secondary
upper disturbance is expected to swing onshore Saturday night.
Portions of Puget Sound may see some shadowing by the Olympics,
but the air mass by this time is expected to be sufficiently cold
for accumulating snowfall down to sea level for most of the area.
.LONG TERM /SUNDAY THROUGH WEDNESDAY/...A vertically stacked
trough is expected to remain just offshore by the time we get to
Sunday. At the same time, a modified arctic boundary will be
sinking southward over southern British Columbia. Models have the
Williams Lake to Bellingham gradient approaching -20 millibars by
mid-morning Sunday which will initiate Fraser River outflow. The
modified arctic front is then expected to slowly sink southward
over Western Washington Sunday into Sunday night. While
uncertainty with regard to snowfall amounts is still high, the
probabilities of widespread snowfall accumulation are highest
during this period. Additionally, the Fraser outflow may act to
enhance upslope snowfall along the Strait of Juan de Fuca as
we've seen a number of times before.
Broad upper troughing remains just offshore Monday through
Wednesday with the the potential for additional precipitation to
move onshore for additional snowfall though uncertainty is quite
high in terms of amounts. 27
&&
.AVIATION...Flow pattern aloft is zonal with higher winds
towards the north up into Canada. Overcast ceilings remain over the
region this morning, with ceilings ranging from VFR/MVFR east of
Puget Sound, to IFR/LIFR in the Kitsap Peninsula and South Interior
areas (fog/mist has mixed out with increase of cloud coverage).
Cloud coverage will solidify late this morning/afternoon to VFR/MVFR
cloud decks (with a couple pockets of IFR/LIFR remaining n the
Olympics and portions of the North Cascades). Friday morning will
see lower end MVFR to IFR ceilings across the region. Precipitation
will expand inland Thursday evening as a cold front approaches the
region. Southerly to southwesterly winds will continue through the
period generally 3 to 6 kts.
KSEA...MVFR ceilings with calm/light SW winds early this morning.
There will be the potential for a brief improvement to VFR this
evening, before returning to MVFR with ceilings just above 1,000 ft
Friday morning. Rain will expand over the terminal late Thursday
evening through Friday. Southwesterly flow with winds 4 to 6 knots.
15/HPR
&&
.MARINE...Southerly winds will increase today as a frontal system
approaches, bringing in Small Craft Advisory winds across the
coastal waters and through the East Entrance of the Strait of Juan
de Fuca and Northern Salish Sea. Another front later on Friday
will maintain SCA winds for most areas through Saturday, with
gales possible through the strait. N/NE Fraser River outflow winds
are possible Sunday and Monday.
Seas will gradually build to 6 to 8 feet throughout the day today,
then continue to build on Friday to 10 to 13 ft. Seas will remain
elevated through Sunday before gradually easing to 4 to 7 feet by
the beginning of next week.
33/15
&&
.HYDROLOGY...No river flooding is expected over the next 7 days
as abnormally dry conditions continue. However, with the
precipitation coming towards the end of the week, the Skokomish
River is forecast to rise above Action Stage. There will be much
uncertainty with the river forecast all the way into the event
given the current below normal flows and the snow and ice build up
in the basin over this recent dry but cold period. As far as
other rivers, only low elevation basins like the Chehalis, Samish,
and Stillaguamish Rivers will see much response at all.
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...Winter Storm Watch from 7 PM PST this evening through Saturday
afternoon for West Slopes North Cascades and Passes-West
Slopes North Central Cascades and Passes-West Slopes South
Central Cascades and Passes.
PZ...Small Craft Advisory from 10 PM this evening to 5 PM PST Friday
for Admiralty Inlet-East Entrance U.S. Waters Strait Of
Juan De Fuca-Northern Inland Waters Including The San Juan
Islands.
Small Craft Advisory from 1 PM this afternoon to 10 AM PST
Friday for Coastal Waters From Cape Flattery To James
Island 10 To 60 Nm-Coastal Waters From Cape Flattery To
James Island Out 10 Nm-Coastal Waters From James Island To
Point Grenville 10 To 60 Nm-Coastal Waters From James
Island To Point Grenville Out 10 Nm-Coastal Waters From
Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal
Waters From Point Grenville To Cape Shoalwater Out 10 Nm.
&&The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 30, 11:53 AM PST | Winter Storm Warning | SEW | 55 hr | |
| Jan 30, 1:33 PM PST | Winter Storm Watch | SEW | San Juan | 39 hr |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.