Alert archive / Washington / Winter Weather Advisories in 2021
Winter Weather Advisory 41, NWS Seattle, WA
NWS Seattle, WA issued this winter weather advisory at Dec 29, 2021, 3:21 AM PST for San Juan County, Washington. It took effect at Dec 29, 2021, 10:00 PM PST. It was in force for 30 hr.
The area
The counties it named.
The facts
- Issued
- Dec 29, 2021, 3:21 AM PST (11:21 UTC)
- In effect from
- Dec 29, 2021, 10:00 PM PST
- Expired
- Dec 31, 2021, 4:00 AM PST
- In force
- 30 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 11:20 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 forecasters said that day
The local office's own words before this winter weather advisory 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 winter weather advisory went out at Dec 28, 8:07 PM PST, 7 hours 14 minutes earlier.
Area forecast discussion, Dec 28, 8:07 PM PST, 7 hours 14 minutes before
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</html>The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 29, 12:51 PM PST | Small Craft Advisory | SEW | 3 hr | |
| Dec 29, 2:43 PM PST | Small Craft Advisory | SEW | 47 hr | |
| Dec 29, 2:50 PM PST | Winter Storm Warning | SEW | 23 hr |
Nearby
Winter Weather Advisories in Washington, 2021Every winter weather 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; radar from the NEXRAD Level II archive.