Alert archive / Washington / Wind Advisories in 2021
Wind Advisory 35, NWS Seattle, WA
NWS Seattle, WA issued this wind advisory at Dec 28, 2021, 3:13 AM PST for San Juan County, Washington. It took effect at Dec 28, 2021, 4:00 PM PST. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Dec 28, 2021, 3:13 AM PST (11:13 UTC)
- In effect from
- Dec 28, 2021, 4:00 PM PST
- Expired
- Dec 29, 2021, 1:00 PM PST
- In force
- 21 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 11:12 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 00:00Z, 11.2 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 553 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 223 m²/s²
- 0-3 km storm-relative helicity
- 338 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
915 WWUS76 KSEW 281113 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 313 AM PST Tue Dec 28 2021 WAZ001-503-506-290000- /O.NEW.KSEW.WI.Y.0035.211229T0000Z-211230T0000Z/ San Juan County-Western Whatcom County-Western Skagit County- Including the cities of Friday Harbor, Bellingham, Mount Vernon, Anacortes, Sedro-Woolley, and Burlington 313 AM PST Tue Dec 28 2021 ...WIND ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST WEDNESDAY... * WHAT...Northeast winds 20 to 35 mph with gusts up to 50 mph expected. * WHERE...San Juan County, Western Whatcom County and Western Skagit County. * WHEN...From 4 PM this afternoon to 4 PM PST Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
3 follow-up statements
262 WWUS76 KSEW 282309 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 309 PM PST Tue Dec 28 2021 WAZ001-503-506-291115- /O.CON.KSEW.WI.Y.0035.211229T0000Z-211230T0000Z/ San Juan County-Western Whatcom County-Western Skagit County- Including the cities of Friday Harbor, Bellingham, Mount Vernon, Anacortes, Sedro-Woolley, and Burlington 309 PM PST Tue Dec 28 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST WEDNESDAY... * WHAT...Northeast winds 30 to 40 mph with gusts up to 50 mph expected. * WHERE...Western Whatcom County, San Juan County and Western Skagit County. * WHEN...Until 4 PM PST Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
279 WWUS76 KSEW 291029 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 229 AM PST Wed Dec 29 2021 WAZ001-503-506-292100- /O.EXT.KSEW.WI.Y.0035.000000T0000Z-211229T2100Z/ San Juan County-Western Whatcom County-Western Skagit County- Including the cities of Friday Harbor, Bellingham, Mount Vernon, Anacortes, Sedro-Woolley, and Burlington 229 AM PST Wed Dec 29 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 1 PM PST THIS AFTERNOON... * WHAT...Northeast winds 20 to 35 mph with gusts up to 50 mph. * WHERE...Western Whatcom County, San Juan County and Western Skagit County. * WHEN...Until 1 PM PST this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
637 WWUS76 KSEW 292054 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 1254 PM PST Wed Dec 29 2021 WAZ001-503-506-292200- /O.EXP.KSEW.WI.Y.0035.000000T0000Z-211229T2100Z/ San Juan County-Western Whatcom County-Western Skagit County- Including the cities of Friday Harbor, Bellingham, Mount Vernon, Anacortes, Sedro-Woolley, and Burlington 1254 PM PST Wed Dec 29 2021 ...WIND ADVISORY WILL EXPIRE AT 1 PM PST THIS AFTERNOON... Winds have eased below advisory criteria, but will remain breezy this afternoon. $$
The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 27, 11:22 PM PST | Small Craft Advisory | SEW | 8 hr | |
| Dec 28, 2:35 AM PST | Gale Watch | SEW | 12 hr | |
| Dec 28, 2:35 AM PST | Small Craft Advisory | SEW | 34 hr | |
| Dec 28, 3:13 AM PST | Wind Chill Advisory | SEW | San Juan | 34 hr |
| Dec 28, 2:22 PM PST | Gale Warning | SEW | 23 hr | |
| Dec 28, 2:22 PM PST | Heavy Freezing Spray Advisory | SEW | 22 hr |
Nearby
Wind Advisories in Washington, 2021Every wind advisory in 2021
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.