Alert archive / Washington / River Flood Warnings in 2018

River Flood Warning 83, NWS Seattle, WA

December 16, 2018Mason County, Washington

NWS Seattle, WA issued this river flood warning at Dec 16, 2018, 9:28 AM PST for Mason County, Washington. It took effect at Dec 16, 2018, 12:32 PM PST. It was in force for 7 days.

The area

The counties it named.

The facts

Issued: Dec 16, 2018, 9:28 AM PST (17:28 UTC)
In effect from: Dec 16, 2018, 12:32 PM PST
Expired: Dec 23, 2018, 12:57 AM PST
In force: 7 days
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Minor

County Mason County, WA

The radar

The Langley Hill radar (KLGX), 74 km from the middle of the area, began a volume at 17:28 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 Skokomish River near Potlatch (SRPW1). The gauge peaked at 17.63 ft at Dec 18, 2018, 2:00 PM PST.

Action stage: 15 ft
Minor stage: 16.5 ft
Moderate stage: 17.5 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12061500, 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 16, 8:29 AM PST, 59 minutes earlier.

Area forecast discussion, Dec 16, 8:29 AM PST, 59 minutes before

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The office that day

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

Issued	Product	Office	Lasted
Dec 15, 11:56 PM PST	High Surf Advisory	SEW	34 hr
Dec 16, 2:31 AM PST	Small Craft Advisory	SEW	36 hr
Dec 16, 8:41 AM PST	Gale Watch	SEW	6 hr
Dec 16, 8:41 AM PST	Small Craft Advisory for Hazardous Seas	SEW	12 hr
Dec 16, 2:15 PM PST	Winter Storm Watch	SEW	13 hr
Dec 16, 2:40 PM PST	Gale Warning	SEW	36 hr

Nearby

River Flood Warnings in Washington, 2018 Every river flood 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.