Alert archive / Washington / River Flood Advisories in 2011

River Flood Advisory 5, NWS Seattle, WA

March 11, 2011Mason County, Washington

NWS Seattle, WA issued this river flood advisory at Mar 11, 2011, 4:46 AM PST for Mason County, Washington. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Mar 11, 2011, 4:46 AM PST (12:46 UTC)
Expired
Mar 12, 2011, 4:44 AM PST
In force
24 hr
Issued by
NWS Seattle, WA

County Mason County, WA

The river

Written for the forecast point Skokomish River near Potlatch (SRPW1).

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 advisory 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 advisory went out at Mar 11, 3:25 AM PST, 1 hour 21 minutes earlier.

Area forecast discussion, Mar 11, 3:25 AM PST, 1 hour 21 minutes before
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In the hours before

Special weather statement, Mar 11, 12:23 AM PST, 4 hours 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
1223 AM PST FRI MAR 11 2011

WAZ516-517-111030-
NORTH COAST-CENTRAL COAST-
1223 AM PST FRI MAR 11 2011

...A TSUNAMI WATCH IS IN EFFECT FOR THE NORTHERN AND CENTRAL
WASHINGTON COAST...

THE NATIONAL WEATHER SERVICE HAS ISSUED A TSUNAMI WATCH FOR THE
NORTHERN AND CENTRAL WASHINGTON COAST. AT 946 PM PST THURSDAY...
A LARGE EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.9 WAS
DETECTED NEAR THE EAST COAST OF JONSHU JAPAN.

THE ARRIVAL TIME FOR THE INITIAL WAVE ON THE WASHINGTON COAST
IS EXPECTED AROUND 705 AM PST FRIDAY.

THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THIS
EVENT...AND WILL UPDATE THIS STATEMENT AS CONDITIONS WARRANT.

WWW.WEATHER.GOV
Special weather statement, Mar 11, 1:02 AM PST, 3 hours 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
102 AM PST FRI MAR 11 2011

WAZ516-517-111115-
NORTH COAST-CENTRAL COAST-
102 AM PST FRI MAR 11 2011

...A TSUNAMI ADVISORY IS IN EFFECT FOR THE NORTHERN AND CENTRAL
WASHINGTON COAST...

THE NATIONAL WEATHER SERVICE HAS ISSUED A TSUNAMI ADVISORY FOR THE
NORTHERN AND CENTRAL WASHINGTON COAST. AT 946 PM PST THURSDAY...
A LARGE EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.9 WAS
DETECTED NEAR THE EAST COAST OF HONSHU JAPAN.

WAVES OF ABOUT A HALF TO ONE FOOT ARE EXPECTED TO REACH THE COAST
AROUND 7 AM PST FRIDAY...AND ARE NOT ANTICIPATED TO LEAD TO
COASTAL FLOODING. HOWEVER SOME AREAS COULD EXPERIENCE DANGEROUS
CURRENTS AND SURGES IN HARBORS OR BAYS. THE MINIMUM WAVE HEIGHT
FOR A TSUNAMI ADVISORY ON THE WASHINGTON COAST IS 6 INCHES OR 15
CENTIMETERS.

THE INITIAL WAVE MAY NOT BE THE LARGEST. COASTAL RESIDENTS ARE
ADVISED TO STAY OUT OF THE WATER...OFF THE BEACH...AND AWAY FROM
HARBORS AND MARINAS. WAVE HEIGHTS AND CURRENTS ARE AMPLIFIED BY
IRREGULAR SHORELINE AND ARE DIFFICULT TO PREDICT. THE TSUNAMI MAY
NOT BE VISIBLE AMONG THE COMMON OCEAN SURF....YET TIDE GAGES WILL
LIKELY REPORT SOME FLUCTUATIONS.

MARINERS IN WATER DEEPER THAN 600 FEET SHOULD NOT BE AFFECTED BY
A TSUNAMI.

REPEAT...A TSUNAMI ADVISORY IS IN EFFECT FOR THE WASHINGTON COAST.

WWW.WEATHER.GOV
Special weather statement, Mar 11, 2:29 AM PST, 2 hours 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
229 AM PST FRI MAR 11 2011

WAZ001-503-506-510-514>517-111230-
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY-
ADMIRALTY INLET AREA-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
229 AM PST FRI MAR 11 2011

...A TSUNAMI ADVISORY IS IN EFFECT FOR THE COAST AND THE LAND AREAS
ADJACENT TO THE STRAIT OF JUAN DE FUCA AND THE NORTHERN INLAND
WATERS...

A TSUNAMI ADVISORY IS IN EFFECT FOR THE ENTIRE WASHINGTON COAST AS
WELL AS THE STRAIT OF JUAN DE FUCA...ADMIRALTY INLET AREA...AND
THE SAN JUANS. AT 946 PM PST THURSDAY...A LARGE EARTHQUAKE WITH A
MAGNITUDE OF 8.9 WAS OCCURRED NEAR THE EAST COAST OF HONSHU JAPAN.
THIS POWERFUL EARTHQUAKE GENERATED A TSUNAMI THAT WAS MOVING ACROSS
THE PACIFIC OCEAN.

THE FOLLOWING ARE THE ESTIMATED ARRIVAL TIMES FOR THE INITIAL
WAVE.

NEAH BAY...710 AM PST.
WESTPORT...725 AM PST.

THE FOLLOWING ARE ESTIMATED WAVE AMPLITUDES.

MOCLIPS...3.3 FEET.
LONG BEACH...1.3 FEET.
WESTPORT...1.3 FEET.
NEAH BAY...1.1 FEET.
BELLINGHAM...0.9 FEET.
PORT ANGELES...0.8 FEET.

REPEAT...A TSUNAMI ADVISORY IS IN EFFECT FOR THE COAST AND THE
LAND AREAS ADJACENT TO THE STRAIT OF JUAN DE FUCA AND THE NORTHERN
INLAND WATERS.

ALTHOUGH THE WAVES ARE NOT ANTICIPATED TO LEAD TO COASTAL
FLOODING...SOME AREAS COULD EXPERIENCE DANGEROUS CURRENTS AND
SURGES IN HARBORS OR BAYS. THE MINIMUM WAVE HEIGHT FOR A TSUNAMI
ADVISORY IS 6 INCHES OR 15 CENTIMETERS.

THE INITIAL WAVE MAY NOT BE THE LARGEST. COASTAL RESIDENTS ARE
ADVISED TO STAY OUT OF THE WATER...OFF THE BEACH...AND AWAY FROM
HARBORS AND MARINAS. WAVE HEIGHTS AND CURRENTS ARE AMPLIFIED BY
IRREGULAR SHORELINE AND ARE DIFFICULT TO PREDICT. THE TSUNAMI MAY
NOT BE VISIBLE AMONG THE COMMON OCEAN SURF...YET TIDE GAGES WILL
LIKELY REPORT SOME FLUCTUATIONS.

MARINERS IN WATER DEEPER THAN 600 FEET SHOULD NOT BE AFFECTED BY
A TSUNAMI.

WWW.WEATHER.GOV
Special weather statement, Mar 11, 4:24 AM PST, 22 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 10, 6:25 PM PSTRiver Flood WarningSEWThurston31 hr
Mar 10, 9:10 PM PSTGale WatchSEW12 hr
Mar 10, 9:10 PM PSTSmall Craft AdvisorySEW53 hr
Mar 11, 2:37 AM PSTGale WarningSEW31 hr

Nearby

River Flood Advisories in Washington, 2011Every river flood advisory in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the gauge from the NWS water service and the USGS.