Alert archive / Washington / River Flood Warnings in 2018

River Flood Warning 75, NWS Seattle, WA

November 26, 2018Whatcom County, Washington

NWS Seattle, WA issued this river flood warning at Nov 26, 2018, 9:46 AM PST for Whatcom County, Washington. It took effect at Nov 26, 2018, 9:53 PM PST. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: Nov 26, 2018, 9:46 AM PST (17:46 UTC)
In effect from: Nov 26, 2018, 9:53 PM PST
Expired: Nov 27, 2018, 9:28 PM PST
In force: 24 hr
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Moderate

County Whatcom County, WA

The radar

The Seattle radar (KATX), 84 km from the middle of the area, began a volume at 17:47 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 South Fork Nooksack River near Saxon Bridge (NSSW1). The gauge peaked at 8.95 ft at Nov 27, 2018, 5:00 AM PST.

Action stage: 6.9 ft
Minor stage: 8 ft
Moderate stage: 8.5 ft
Major stage: 9.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12210000, 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 26, 6:48 AM PST, 2 hours 58 minutes earlier.

Area forecast discussion, Nov 26, 6:48 AM PST, 2 hours 58 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 26, 8:50 AM PST	Small Craft Advisory	SEW		18 hr
Nov 26, 9:46 AM PST	River Flood Warning	SEW	Mason	64 hr
Nov 26, 2:02 PM PST	Coastal Flood Advisory	SEW	San Juan	20 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.