Alert archive / Washington / River Flood Warnings in 2015

River Flood Warning 87, NWS Seattle, WA

November 17, 2015Snohomish County, Washington

NWS Seattle, WA issued this river flood warning at Nov 17, 2015, 6:18 PM PST for Snohomish County, Washington. It took effect at Nov 17, 2015, 6:45 PM PST. It was in force for 41 hr.

The area

The counties it named.

The facts

Issued: Nov 17, 2015, 6:18 PM PST (02:18 UTC)
In effect from: Nov 17, 2015, 6:45 PM PST
Expired: Nov 19, 2015, 12:00 PM PST
In force: 41 hr
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Major

County Snohomish County, WA

The radar

The Seattle radar (KATX), 60 km from the middle of the area, began a volume at 02:19 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 Snohomish River near Monroe (MROW1).

Action stage: 10 ft
Minor stage: 15 ft
Moderate stage: 16 ft
Major stage: 17 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12150800, 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 Nov 17, 3:34 PM PST, 2 hours 44 minutes earlier.

Area forecast discussion, Nov 17, 3:34 PM PST, 2 hours 44 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
Nov 17, 4:26 PM PST	River Flood Warning	SEW	Pierce	15 hr
Nov 17, 4:26 PM PST	River Flood Warning	SEW	Pierce	15 hr
Nov 17, 4:26 PM PST	River Flood Warning	SEW	Lewis	16 hr
Nov 17, 4:26 PM PST	River Flood Warning	SEW	Lewis	16 hr
Nov 17, 4:55 PM PST	River Flood Warning	SEW	Clallam	16 hr
Nov 17, 4:55 PM PST	River Flood Warning	SEW	Grays Harbor	24 hr
Nov 17, 5:49 PM PST	River Flood Warning	SEW	Skagit	42 hr
Nov 17, 6:00 PM PST	Areal Flood Warning	SEW	King	9 hr
Nov 17, 6:18 PM PST	River Flood Warning	SEW	Snohomish	49 hr
Nov 17, 6:27 PM PST	Areal Flood Warning	SEW	Lewis	9 hr
Nov 17, 6:38 PM PST	Areal Flood Warning	SEW	Snohomish	12 hr
Nov 17, 6:51 PM PST	River Flood Warning	SEW	King	12 hr
Nov 17, 6:56 PM PST	River Flood Warning	SEW	Thurston	13 hr
Nov 17, 7:14 PM PST	River Flood Warning	SEW	Thurston	24 hr
Nov 17, 7:14 PM PST	River Flood Warning	SEW	Lewis	43 hr
Nov 17, 7:14 PM PST	River Flood Warning	SEW	Thurston	62 hr
Nov 17, 8:57 PM PST	Small Craft Advisory	SEW		13 hr
Nov 17, 8:57 PM PST	Small Craft Advisory for Hazardous Seas	SEW		25 hr
Nov 17, 11:51 PM PST	Gale Warning	SEW		4 hr
Nov 17, 11:51 PM PST	Small Craft Advisory	SEW		10 hr
Nov 18, 3:01 AM PST	Areal Flood Warning	SEW	King	9 hr
Nov 18, 6:10 AM PST	Areal Flood Warning	SEW	Snohomish	12 hr
Nov 18, 10:10 AM PST	River Flood Warning	SEW	King	18 hr

Nearby

River Flood Warnings in Washington, 2015 Every river flood warning in 2015

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.