Alert archive / Washington / River Flood Warnings in 2015

River Flood Warning 96, NWS Seattle, WA

December 7, 2015Grays Harbor County, Washington

NWS Seattle, WA issued this river flood warning at Dec 7, 2015, 8:49 AM PST for Grays Harbor County, Washington. It took effect at Dec 7, 2015, 9:27 AM PST. It was in force for 60 hr.

The area

The counties it named.

The facts

Issued: Dec 7, 2015, 8:49 AM PST (16:49 UTC)
In effect from: Dec 7, 2015, 9:27 AM PST
Expired: Dec 9, 2015, 9:28 PM PST
In force: 60 hr
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Minor

County Grays Harbor County, WA

The radar

The Langley Hill radar (KLGX), 21 km from the middle of the area, began a volume at 16:53 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 Satsop River near Satsop (SATW1). The gauge peaked at 35.94 ft at Dec 9, 2015, 1:00 AM PST.

Action stage: 36 ft
Minor stage: 38 ft
Moderate stage: 40 ft
Major stage: 42 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12035000, 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 7, 3:21 AM PST, 5 hours 28 minutes earlier.

Area forecast discussion, Dec 7, 3:21 AM PST, 5 hours 28 minutes before

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In the hours before

Special weather statement, Dec 7, 5:28 AM PST, 3 hours 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
528 AM PST MON DEC 7 2015

WAZ503-504-506-507-509-511-512-515>517-555-556-558-559-081330-
WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-TACOMA AREA-HOOD CANAL AREA-
LOWER CHEHALIS VALLEY AREA-WESTERN STRAIT OF JUAN DE FUCA-
NORTH COAST-CENTRAL COAST-EAST PUGET SOUND LOWLANDS-
BELLEVUE AND VICINITY-SEATTLE AND VICINITY-BREMERTON AND VICINITY-
528 AM PST MON DEC 7 2015

...HEAVY RAINFALL TODAY THROUGH WEDNESDAY WILL LEAD TO AN
INCREASED THREAT OF LANDSLIDES IN WESTERN WASHINGTON...

PERIODS OF HEAVY RAINFALL OVER THE PAST WEEK HAVE INCREASED SOIL
MOISTURE TO MODERATE LEVELS ACROSS WESTERN WASHINGTON. HEAVY
RAINFALL OF 2 TO 5 INCHES ACROSS THE INTERIOR LOWLANDS AND 3 TO 6
INCHES ALONG THE COAST IS EXPECTED TODAY THROUGH WEDNESDAY. THIS
AMOUNT OF RAIN WILL PUT EXTRA PRESSURE ON SOIL INSTABILITY...
LEADING TO AN INCREASED THREAT OF LANDSLIDES.

FOR MORE INFORMATION ABOUT CURRENT CONDITIONS...VISIT
WWW.WEATHER.GOV/SEATTLE...SELECT HYDROLOGY...AND THEN SCROLL DOWN
FOR THE LINKS TO THE LANDSLIDE INFORMATION PAGES.

TO REPORT LANDSLIDES TO THE STATE FOR TABULATION...GO TO THE
WASHINGTON STATE LANDSLIDE RISK WEB PAGE AND THE LINK FOR
REPORTING.

WWW.WEATHER.GOV/SEATTLE

Local storm report, Dec 7, 8:47 AM PST, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
847 AM PST MON DEC 07 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     HEAVY RAIN       2 N POTLATCH            47.40N 123.14W
12/07/2015  M3.75 INCH       MASON              WA   TRAINED SPOTTER

            24 HOUR TOTAL AS OF 8 AM THIS MORNING.

&&

GRUB

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 7, 3:00 AM PST	Small Craft Advisory	SEW		18 hr
Dec 7, 3:00 AM PST	Small Craft Advisory for Hazardous Seas	SEW		13 hr
Dec 7, 4:30 AM PST	Flood Watch	SEW	Clallam, Grays Harbor, Jefferson, King, Lewis, Mason and 5 more	62 hr
Dec 7, 4:33 AM PST	High Wind Watch	SEW		10 hr
Dec 7, 7:43 AM PST	Small Craft Advisory	SEW		4 hr
Dec 7, 9:00 AM PST	Small Craft Advisory	SEW		3 hr
Dec 7, 10:05 AM PST	Wind Advisory	SEW		12 hr
Dec 7, 3:00 PM PST	High Wind Warning	SEW	San Juan	24 hr
Dec 7, 3:00 PM PST	Wind Advisory	SEW	San Juan	24 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.