Alert archive / Washington / Wind Advisories in 2018
Wind Advisory 9, NWS Seattle, WA
NWS Seattle, WA issued this wind advisory at Apr 9, 2018, 2:57 PM PDT for San Juan County, Washington. It took effect at Apr 10, 2018, 6:00 AM PDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 9, 2018, 2:57 PM PDT (21:57 UTC)
- In effect from
- Apr 10, 2018, 6:00 AM PDT
- Expired
- Apr 10, 2018, 1:12 PM PDT
- In force
- 7 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 21:59 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, 10.0 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
- 5 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
154 WWUS76 KSEW 092157 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 257 PM PDT Mon Apr 9 2018 WAZ001-503-506-507-510-516-517-100600- /O.NEW.KSEW.WI.Y.0009.180410T1300Z-180410T2200Z/ San Juan County-Western Whatcom County-Western Skagit County- Everett and Vicinity-Admiralty Inlet Area-North Coast- Central Coast- 257 PM PDT Mon Apr 9 2018 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 3 PM PDT TUESDAY... The National Weather Service in Seattle has issued a Wind Advisory, which is in effect from 6 AM to 3 PM PDT Tuesday. * WIND...South to southeast 20 to 35 mph with gusts 45 to 50 mph. * SOME AFFECTED LOCATIONS...Hoquiam, Forks, Friday Harbor, Bellingham, Whidbey Island, Everett. * TIMING...Morning through mid afternoon. * IMPACTS...Minor tree damage and spotty power outages are possible. 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. && $$ www.weather.gov/seattle
3 follow-up statements
803 WWUS76 KSEW 100935 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 235 AM PDT Tue Apr 10 2018 WAZ001-503-506-507-510-516-517-102200- /O.CON.KSEW.WI.Y.0009.180410T1300Z-180410T2200Z/ San Juan County-Western Whatcom County-Western Skagit County- Everett and Vicinity-Admiralty Inlet Area-North Coast- Central Coast- 235 AM PDT Tue Apr 10 2018 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 3 PM PDT THIS AFTERNOON... * WIND...South to southeast 20 to 35 mph with gusts 45 to 50 mph. * SOME AFFECTED LOCATIONS...Hoquiam, Forks, Friday Harbor, Bellingham, Whidbey Island, Everett. * TIMING...This morning through mid afternoon. * IMPACTS...Minor tree damage and spotty power outages are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained winds up to 35 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ www.weather.gov/seattle
955 WWUS76 KSEW 101902 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 1202 PM PDT Tue Apr 10 2018 WAZ516-517-102015- /O.CAN.KSEW.WI.Y.0009.000000T0000Z-180410T2200Z/ North Coast-Central Coast- 1202 PM PDT Tue Apr 10 2018 ...WIND ADVISORY IS CANCELLED... The National Weather Service in Seattle has cancelled the Wind Advisory for the North and Central Washington Coast. Wind speeds have fallen below advisory criteria and will continue to fall for the rest of this afternoon. $$ WAZ001-503-506-507-510-102200- /O.CON.KSEW.WI.Y.0009.000000T0000Z-180410T2200Z/ San Juan County-Western Whatcom County-Western Skagit County- Everett and Vicinity-Admiralty Inlet Area- 1202 PM PDT Tue Apr 10 2018 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WIND...South to southeast 20 to 35 mph with gusts around 45 mph. * SOME AFFECTED LOCATIONS...Friday Harbor, Bellingham, Whidbey Island, Everett. * TIMING...Through mid afternoon. * IMPACTS...Minor tree damage and spotty power outages are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained winds up to 35 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ www.weather.gov/seattle
683 WWUS76 KSEW 102012 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 112 PM PDT Tue Apr 10 2018 WAZ001-503-506-507-510-102115- /O.CAN.KSEW.WI.Y.0009.000000T0000Z-180410T2200Z/ San Juan County-Western Whatcom County-Western Skagit County- Everett and Vicinity-Admiralty Inlet Area- 112 PM PDT Tue Apr 10 2018 ...WIND ADVISORY IS CANCELLED... The National Weather Service in Seattle has cancelled the Wind Advisory. $$ www.weather.gov/seattle
The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 7:14 PM PDT | Small Craft Advisory | SEW | 6 hr | |
| Apr 8, 10:42 PM PDT | River Flood Warning | SEW | Thurston | 16 hr |
| Apr 9, 2:41 AM PDT | Gale Watch | SEW | 7 hr | |
| Apr 9, 2:41 AM PDT | Small Craft Advisory | SEW | 27 hr | |
| Apr 9, 9:20 AM PDT | Gale Warning | SEW | 30 hr | |
| Apr 9, 3:00 PM PDT | Small Craft Advisory | SEW | 53 hr |
Nearby
Wind Advisories in Washington, 2018Every wind advisory in 2018
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.