Alert archive / Washington / River Flood Warnings in 2015

River Flood Warning 30, NWS Seattle, WA

October 30, 2015Snohomish County, Washington

NWS Seattle, WA issued this river flood warning at Oct 30, 2015, 10:05 PM PDT for Snohomish County, Washington. It took effect at Oct 31, 2015, 6:33 AM PDT. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued: Oct 30, 2015, 10:05 PM PDT (05:05 UTC)
In effect from: Oct 31, 2015, 6:33 AM PDT
Expired: Nov 1, 2015, 11:20 AM PST
In force: 30 hr
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Moderate

County Snohomish County, WA

The radar

The Seattle radar (KATX), 60 km from the middle of the area, began a volume at 05:08 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 Skykomish River near Gold Bar (GLBW1). The gauge peaked at 19.38 ft at Oct 31, 2015, 3:00 PM PDT.

Action stage: 12.2 ft
Minor stage: 15 ft
Moderate stage: 17 ft
Major stage: 19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12134500, 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 Oct 30, 9:30 PM PDT, 35 minutes earlier.

Area forecast discussion, Oct 30, 9:30 PM PDT, 35 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
Oct 30, 6:28 PM PDT	River Flood Warning	SEW	King	35 hr
Oct 30, 10:05 PM PDT	River Flood Warning	SEW	King	38 hr
Oct 30, 10:05 PM PDT	River Flood Warning	SEW	King	63 hr
Oct 30, 10:05 PM PDT	Small Craft Advisory	SEW		16 hr
Oct 31, 6:44 AM PDT	River Flood Warning	SEW	Mason	55 hr
Oct 31, 8:05 AM PDT	High Surf Advisory	SEW		39 hr
Oct 31, 10:31 AM PDT	Small Craft Advisory	SEW		4 hr
Oct 31, 12:25 PM PDT	River Flood Warning	SEW	Snohomish	14 hr
Oct 31, 1:43 PM PDT	River Flood Warning	SEW	Pierce	14 hr
Oct 31, 1:43 PM PDT	River Flood Warning	SEW	Pierce	13 hr
Oct 31, 2:20 PM PDT	Areal Flood Warning	SEW	Snohomish	3 hr
Oct 31, 2:29 PM PDT	Areal Flood Advisory	SEW	Lewis, Thurston	3 hr
Oct 31, 2:42 PM PDT	Winter Storm Warning	SEW		37 hr
Oct 31, 2:58 PM PDT	River Flood Warning	SEW	Snohomish	17 hr
Oct 31, 3:26 PM PDT	River Flood Warning	SEW	Lewis	16 hr
Oct 31, 3:26 PM PDT	River Flood Warning	SEW	Lewis	31 hr
Oct 31, 3:28 PM PDT	River Flood Warning	SEW	Lewis, Pierce	11 hr
Oct 31, 4:41 PM PDT	River Flood Warning	SEW	Snohomish	26 hr
Oct 31, 4:41 PM PDT	River Flood Warning	SEW	Snohomish	39 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.