Alert archive / Washington / High Wind Warnings in 2018
High Wind Warning 3, NWS Seattle, WA
NWS Seattle, WA issued this high wind warning at Feb 18, 2018, 1:20 PM PST for San Juan County, Washington. It was in force for 8 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Feb 18, 2018, 1:20 PM PST (21:20 UTC)
- Expired
- Feb 18, 2018, 9:38 PM PST
- In force
- 8 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 21:24 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 18, 1:22 PM PST | NON-TSTM WND GST 62 | Lopez Island, WA | MESONET STATION D7371, LOPEZ ISLAND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Quillayute State, WA (KUIL), launched 12:00Z, 9.3 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
- 23 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
892 WWUS76 KSEW 182120 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 120 PM PST Sun Feb 18 2018 WAZ506-182230- /O.CAN.KSEW.WI.Y.0006.000000T0000Z-180219T0800Z/ Western Skagit County- 120 PM PST Sun Feb 18 2018 ...WIND ADVISORY IS CANCELLED... The National Weather Service in Seattle has cancelled the Wind Advisory. $$ WAZ503-190800- /O.UPG.KSEW.WI.Y.0006.000000T0000Z-180219T0800Z/ /O.NEW.KSEW.HW.W.0003.180218T2120Z-180219T0800Z/ Western Whatcom County- 120 PM PST Sun Feb 18 2018 ...HIGH WIND WARNING IN EFFECT UNTIL MIDNIGHT PST TONIGHT... The National Weather Service in Seattle has issued a High Wind Warning, which is in effect until midnight PST tonight. The Wind Advisory is no longer in effect. * WIND...North to northeast 25 to 40 mph with gusts near 60 mph. * SOME AFFECTED LOCATIONS...Lynden, Ferndale, Bellingham, and Sandy Point Shores. * TIMING...Strong wind will continue through this afternoon, then start to ease this evening. * IMPACTS...Winds this strong can topple small trees, snap tree branches, and cause local power outages. The strong winds and cold temperatures will combine for wind chill temperatures in the teens and lower 20s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ WAZ001-190800- /O.UPG.KSEW.WI.Y.0005.000000T0000Z-180219T0800Z/ /O.NEW.KSEW.HW.W.0003.180218T2120Z-180219T0800Z/ San Juan County- 120 PM PST Sun Feb 18 2018 ...HIGH WIND WARNING IN EFFECT UNTIL MIDNIGHT PST TONIGHT... The National Weather Service in Seattle has issued a High Wind Warning, which is in effect until midnight PST tonight. The Wind Advisory is no longer in effect. * WIND...North to northeast 25 to 40 mph with gusts near 60 mph. * SOME AFFECTED LOCATIONS...The San Juan Islands. * TIMING...Strong wind will continue through this afternoon, then start to ease this evening. * IMPACTS...Winds this strong can topple small trees, snap tree branches, and cause local power outages. The strong winds and cold temperatures will combine for wind chill temperatures in the teens and lower 20s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ www.weather.gov/seattle
1 follow-up statement
281 WWUS76 KSEW 190538 NPWSEW URGENT - WEATHER MESSAGE National Weather Service Seattle WA 938 PM PST Sun Feb 18 2018 WAZ001-503-190645- /O.CAN.KSEW.HW.W.0003.000000T0000Z-180219T0800Z/ San Juan County-Western Whatcom County- 938 PM PST Sun Feb 18 2018 ...HIGH WIND WARNING IS CANCELLED FOR SAN JUAN COUNTY AND WESTERN WHATCOM COUNTY... The National Weather Service in Seattle has cancelled the High Wind Warning. Winds have diminished and were mainly in the 15 to 30 mph range with local gusts near 40 mph. Expect the northerly winds to continue decreasing overnight. The following are some peak wind speeds from this afternoon: Lopez Island (west of Spencer Spit State Park), 62 mph gust; Sandy Point and Bellingham, 60 mph gust; and Ferndale, gust to 51 mph. $$ www.weather.gov/seattle
The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 2:54 AM PST | Small Craft Advisory | SEW | 23 hr | |
| Feb 18, 7:53 AM PST | High Surf Advisory | SEW | 6 hr | |
| Feb 18, 3:26 PM PST | Small Craft Advisory | SEW | 11 hr |
Nearby
High Wind Warnings in Washington, 2018Every high wind warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.