Alert archive / Washington / Dense Fog Advisories in 2021

Dense Fog Advisory 7, NWS Spokane, WA

December 22, 2021Adams County, Douglas County, Grant County, Washington

NWS Spokane, WA issued this dense fog advisory at Dec 22, 2021, 11:41 PM PST for Adams County, Douglas County, Grant County, Washington. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Dec 22, 2021, 11:41 PM PST (07:41 UTC)
Expired: Dec 23, 2021, 7:00 AM PST
In force: 7 hr
Issued by: NWS Spokane, WA

Counties Adams County, WA, Douglas County, WA, Grant County, WA

The radar

The Spokane radar (KOTX), 128 km from the middle of the area, began a volume at 07:44 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 dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Spokane, WA wrote its last area forecast discussion before this dense fog advisory went out at Dec 22, 9:47 PM PST, 1 hour 54 minutes earlier.

Area forecast discussion, Dec 22, 9:47 PM PST, 1 hour 54 minutes before

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Hazardous weather outlook, Dec 22, 4:55 AM PST, 18 hours 46 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 23, 12:53 PM PST	Winter Weather Advisory	OTX	Chelan	45 hr
Dec 23, 3:01 PM PST	Winter Storm Warning	OTX	Pend Oreille, Spokane, Stevens	3 days

Nearby

Dense Fog Advisories in Washington, 2021 Every dense fog 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.