Alert archive / Washington / River Flood Warnings in 2019

River Flood Warning 23, NWS Seattle, WA

December 20, 2019King County, Washington

NWS Seattle, WA issued this river flood warning at Dec 20, 2019, 3:45 AM PST for King County, Washington. It was in force for 34 hr.

The area

The counties it named.

The facts

Issued: Dec 20, 2019, 3:45 AM PST (11:45 UTC)
Expired: Dec 21, 2019, 1:51 PM PST
In force: 34 hr
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Minor

County King County, WA

The radar

The Seattle radar (KATX), 92 km from the middle of the area, began a volume at 11:48 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 river

Written for the forecast point Tolt River near Carnation (TOLW1). The gauge peaked at 9.58 ft at Dec 20, 2019, 10:00 AM PST.

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12148500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning 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 river flood warning went out at Dec 19, 2:00 PM PST, 13 hours 45 minutes earlier.

Area forecast discussion, Dec 19, 2:00 PM PST, 13 hours 45 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 19, 10:16 PM PST	River Flood Warning	SEW	Mason	60 hr
Dec 20, 2:38 AM PST	Small Craft Advisory	SEW		37 hr
Dec 20, 4:50 AM PST	River Flood Warning	SEW	Lewis	35 hr
Dec 20, 5:26 AM PST	Areal Flood Advisory	SEW	King, Kitsap, Lewis, Mason, Pierce, Thurston	6 hr
Dec 20, 6:04 AM PST	River Flood Warning	SEW	Lewis	24 hr
Dec 20, 6:17 AM PST	Winter Storm Warning	SEW		28 hr
Dec 20, 10:30 AM PST	River Flood Warning	SEW	King	22 hr
Dec 20, 11:33 AM PST	Areal Flood Advisory	SEW	King, Kitsap, Lewis, Mason, Pierce, Thurston	12 hr
Dec 20, 1:13 PM PST	Winter Weather Advisory	SEW		17 hr
Dec 20, 1:21 PM PST	Areal Flood Advisory	SEW	King, Kitsap, Lewis, Mason, Pierce, Snohomish and 1 more	12 hr
Dec 20, 2:41 PM PST	River Flood Warning	SEW	Snohomish	29 hr
Dec 20, 2:41 PM PST	River Flood Warning	SEW	King	47 hr

Nearby

River Flood Warnings in Washington, 2019 Every river flood warning in 2019

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; the gauge from the NWS water service and the USGS.