Alert archive / Washington / Wind Advisories in 2017
Wind Advisory 21, NWS Seattle, WA
NWS Seattle, WA issued this wind advisory at Nov 18, 2017, 2:40 PM PST for San Juan County, Washington. It took effect at Nov 19, 2017, 6:00 AM PST. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Nov 18, 2017, 2:40 PM PST (22:40 UTC)
- In effect from
- Nov 19, 2017, 6:00 AM PST
- Expired
- Nov 20, 2017, 12:00 AM PST
- In force
- 18 hr
- Issued by
- NWS Seattle, WA
County San Juan County, WA
The radar
The Seattle radar (KATX), 54 km from the middle of the area, began a volume at 22:40 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Quillayute State, WA (KUIL), launched 12:00Z, 10.7 hours before the alert went out and 127 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 4 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 481 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 214 m²/s²
- 0-3 km storm-relative helicity
- 264 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
453 WWUS76 KSEW 182240 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 240 PM PST Sat Nov 18 2017 WAZ516-191230- /O.NEW.KSEW.WI.Y.0021.171119T1200Z-171119T2300Z/ North Coast- 240 PM PST Sat Nov 18 2017 ...WIND ADVISORY IN EFFECT FROM 4 AM TO 3 PM PST SUNDAY... The National Weather Service in Seattle has issued a Wind Advisory, which is in effect from 4 AM to 3 PM PST Sunday. * WIND...SOUTH WIND RISING TO 20 TO 35 MPH WITH GUSTS TO 55 MPH ON SUNDAY. * SOME AFFECTED LOCATIONS...FORKS. * TIMING...A STRONG FRONT WILL MOVE OVER THE AREA ON SUNDAY. * IMPACTS...DOWNED LIMBS AND LOCAL POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. && $$ WAZ517-191230- /O.NEW.KSEW.WI.Y.0021.171119T1400Z-171120T0100Z/ Central Coast- 240 PM PST Sat Nov 18 2017 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 5 PM PST SUNDAY... The National Weather Service in Seattle has issued a Wind Advisory, which is in effect from 6 AM to 5 PM PST Sunday. * WIND...SOUTH WIND RISING TO 20 TO 35 MPH WITH GUSTS TO 55 MPH ON SUNDAY. * SOME AFFECTED LOCATIONS...HOQUIAM. * TIMING...A STRONG FRONT WILL MOVE OVER THE AREA ON SUNDAY. * IMPACTS...DOWNED LIMBS AND LOCAL POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. && $$ WAZ001-503-506-510-191230- /O.NEW.KSEW.WI.Y.0021.171119T1400Z-171119T2300Z/ San Juan County-Western Whatcom County-Western Skagit County- Admiralty Inlet Area- 240 PM PST Sat Nov 18 2017 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 3 PM PST SUNDAY... The National Weather Service in Seattle has issued a Wind Advisory, which is in effect from 6 AM to 3 PM PST Sunday. * WIND...SOUTH WIND RISING TO 20 TO 35 MPH WITH GUSTS 45 TO 55 MPH ON SUNDAY. * SOME AFFECTED LOCATIONS...WHIDBEY ISLAND AND THE SAN JUANS. * TIMING...A STRONG FRONT WILL MOVE OVER THE AREA ON SUNDAY. * IMPACTS...DOWNED LIMBS AND LOCAL POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. && $$ www.weather.gov/seattle
4 follow-up statements
475 WWUS76 KSEW 191116 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 316 AM PST Sun Nov 19 2017 WAZ516-517-191930- /O.EXT.KSEW.WI.Y.0021.171119T1400Z-171120T0200Z/ North Coast-Central Coast- 316 AM PST Sun Nov 19 2017 ...WIND ADVISORY NOW IN EFFECT FOR THE NORTH AND CENTRAL COAST UNTIL 6 PM PST THIS EVENING... * WIND...Becoming southerly and increasing to 20 to 35 mph with local gusts near 55 mph. * SOME AFFECTED LOCATIONS...La Push, Westport, and Hoquiam. * TIMING...The strongest winds are anticipated to occur between 10 AM and 5 PM PST. * IMPACTS...Snapped tree limbs and brief power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ WAZ001-503-506-510-191930- /O.EXT.KSEW.WI.Y.0021.171119T1400Z-171120T0200Z/ San Juan County-Western Whatcom County-Western Skagit County- Admiralty Inlet Area- 316 AM PST Sun Nov 19 2017 ...WIND ADVISORY NOW IN EFFECT FOR THE ADMIRALTY INLET AREA NORTHWARD UNTIL 6 PM PST THIS EVENING... * WIND...Southerly and increasing to 20 to 35 mph with local gusts near 55 mph. * SOME AFFECTED LOCATIONS...Oak Harbor, Lopez Island, Bellingham, and Mount Vernon. * TIMING...The strongest winds are anticipated to occur between 10 AM and 5 PM PST. * IMPACTS...Snapped tree limbs and brief power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ www.weather.gov/seattle
547 WWUS76 KSEW 191912 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 1112 AM PST Sun Nov 19 2017 WAZ001-503-510-200200- /O.UPG.KSEW.WI.Y.0021.000000T0000Z-171120T0200Z/ /O.NEW.KSEW.HW.W.0010.171119T1912Z-171120T0200Z/ San Juan County-Western Whatcom County-Admiralty Inlet Area- 1112 AM PST Sun Nov 19 2017 ...HIGH WIND WARNING IN EFFECT UNTIL 6 PM PST THIS EVENING... The National Weather Service in Seattle has issued a High Wind Warning, which is in effect until 6 PM PST this evening. The Wind Advisory is no longer in effect. * WIND...Southerly and increasing to 25 to 40 mph with local gusts to 60 mph. * SOME AFFECTED LOCATIONS...Oak Harbor, Lopez Island, Bellingham. * TIMING...Winds will begin to ease after the middle of the afternoon. * IMPACTS...Snapped tree limbs and fallen trees with possible power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... High winds can topple trees onto roads, vehicles, and rooftops. Falling trees or large branches have been known to cause fatalities during windstorms. Downed power lines can cause power outages lasting a couple of hours or longer. Secure loose outdoor objects or light-weight furniture before the potentially damaging winds arrive. && $$ WAZ516-517-200200- /O.CON.KSEW.WI.Y.0021.000000T0000Z-171120T0200Z/ North Coast-Central Coast- 1112 AM PST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WIND...Becoming southerly and increasing to 20 to 35 mph with local gusts near 55 mph. * SOME AFFECTED LOCATIONS...La Push, Westport, and Hoquiam. * TIMING...The strongest winds are anticipated to occur between 10 AM and 5 PM PST. * IMPACTS...Snapped tree limbs and brief power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ WAZ506-200200- /O.CON.KSEW.WI.Y.0021.000000T0000Z-171120T0200Z/ Western Skagit County- 1112 AM PST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WIND...Southerly and increasing to 20 to 35 mph with local gusts near 55 mph. * SOME AFFECTED LOCATIONS...Mount Vernon. * TIMING...The strongest winds are anticipated to occur between 10 AM and 5 PM PST. * IMPACTS...Snapped tree limbs and brief power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ www.weather.gov/seattle
853 WWUS76 KSEW 192240 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 240 PM PST Sun Nov 19 2017 WAZ001-503-510-200200- /O.CON.KSEW.HW.W.0010.000000T0000Z-171120T0200Z/ San Juan County-Western Whatcom County-Admiralty Inlet Area- 240 PM PST Sun Nov 19 2017 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WIND...Southerly 25 to 40 mph with local gusts to 60 mph. * SOME AFFECTED LOCATIONS...Oak Harbor, Lopez Island, Bellingham. * TIMING...Winds will ease gradually through evening. * IMPACTS...Snapped tree limbs and fallen trees with possible power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... High winds can topple trees onto roads, vehicles, and rooftops. Falling trees or large branches have been known to cause fatalities during windstorms. Downed power lines can cause power outages lasting a couple of hours or longer. Secure loose outdoor objects or light-weight furniture before the potentially damaging winds arrive. && $$ WAZ517-200500- /O.EXT.KSEW.WI.Y.0021.000000T0000Z-171120T0500Z/ Central Coast- 240 PM PST Sun Nov 19 2017 ...WIND ADVISORY NOW IN EFFECT UNTIL 9 PM PST THIS EVENING... * WIND...Southerly 20 to 35 mph with local gusts near 55 mph possible. * SOME AFFECTED LOCATIONS...Westport, and Hoquiam. * TIMING...Winds are expected to increase until early evening and then ease later this evening. * IMPACTS...Snapped tree limbs and brief power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ WAZ516-200200- /O.CON.KSEW.WI.Y.0021.000000T0000Z-171120T0200Z/ North Coast- 240 PM PST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WIND...Southerly and increasing to 15 to 30 mph with local gusts near 45 mph. * SOME AFFECTED LOCATIONS...La Push. * TIMING...The strongest winds will continue to be near the beaches. * IMPACTS...Snapped tree limbs and brief power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ WAZ506-200200- /O.CON.KSEW.WI.Y.0021.000000T0000Z-171120T0200Z/ Western Skagit County- 240 PM PST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WIND...Southerly and increasing to 20 to 35 mph with local gusts near 50 mph possible. * SOME AFFECTED LOCATIONS...Mount Vernon. * TIMING...Winds will ease by evening as the front shifts south. * IMPACTS...Snapped tree limbs and brief power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ www.weather.gov/seattle
970 WWUS76 KSEW 200209 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 609 PM PST Sun Nov 19 2017 WAZ001-503-510-200600- /O.EXP.KSEW.HW.W.0010.000000T0000Z-171120T0200Z/ /O.EXB.KSEW.WI.Y.0021.000000T0000Z-171120T0600Z/ San Juan County-Western Whatcom County-Admiralty Inlet Area- 609 PM PST Sun Nov 19 2017 ...WIND ADVISORY IN EFFECT UNTIL 10 PM PST THIS EVENING... ...HIGH WIND WARNING HAS ENDED... The National Weather Service in Seattle has issued a Wind Advisory, which is in effect until 10 PM PST this evening. * WIND...South to southeast winds 20 to 35 mph with local gusts 50 to 55 mph possible. * SOME AFFECTED LOCATIONS...Oak Harbor, Lopez Island, Bellingham. * TIMING...Strong winds will ease later this evening. * IMPACTS...Snapped tree limbs and localized power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. && $$ WAZ506-516-200315- /O.EXP.KSEW.WI.Y.0021.000000T0000Z-171120T0200Z/ Western Skagit County-North Coast- 609 PM PST Sun Nov 19 2017 ...WIND ADVISORY HAS ENDED... Winds will continue to ease this evening. $$ WAZ517-200800- /O.EXT.KSEW.WI.Y.0021.000000T0000Z-171120T0800Z/ Central Coast- 609 PM PST Sun Nov 19 2017 ...WIND ADVISORY NOW IN EFFECT UNTIL MIDNIGHT PST TONIGHT... * WIND...Southerly 20 to 35 mph with local gusts near 55 mph possible. * SOME AFFECTED LOCATIONS...Westport, and Hoquiam. * TIMING...Strong winds will decrease rapidly by midnight. * IMPACTS...Snapped tree limbs and localized power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ www.weather.gov/seattle
The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 18, 2:52 AM PST | Small Craft Advisory | SEW | 45 hr | |
| Nov 18, 3:14 PM PST | Small Craft Advisory for Rough Bar | SEW | 47 hr |
Nearby
Wind Advisories in Washington, 2017Every wind advisory in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.