Alert archive / Washington / River Flood Warnings in 2014

River Flood Warning 62, NWS Seattle, WA

December 8, 2014Mason County, Washington

NWS Seattle, WA issued this river flood warning at Dec 8, 2014, 6:18 PM PST for Mason County, Washington. It took effect at Dec 9, 2014, 3:27 AM PST. It was in force for 7 days.

The area

The counties it named.

The facts

Issued: Dec 8, 2014, 6:18 PM PST (02:18 UTC)
In effect from: Dec 9, 2014, 3:27 AM PST
Expired: Dec 16, 2014, 3:27 AM PST
In force: 7 days
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Major

County Mason County, WA

The radar

The Langley Hill radar (KLGX), 74 km from the middle of the area, began a volume at 02:22 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 Skokomish River near Potlatch (SRPW1). The gauge peaked at 17.37 ft at Dec 10, 2014, 5:00 PM PST.

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 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 8, 3:00 PM PST, 3 hours 18 minutes earlier.

Area forecast discussion, Dec 8, 3:00 PM PST, 3 hours 18 minutes before

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In the hours before

Special weather statement, Dec 8, 3:20 PM PST, 2 hours 58 minutes before

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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Special weather statement, Dec 8, 4:53 PM PST, 1 hour 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
453 PM PST MON DEC 8 2014

WAZ503-504-506-507-509-511>513-515>517-555-556-558-559-567>569-
100100-
WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-TACOMA AREA-HOOD CANAL AREA-
LOWER CHEHALIS VALLEY AREA-OLYMPICS-WESTERN STRAIT OF JUAN DE FUCA-
NORTH COAST-CENTRAL COAST-EAST PUGET SOUND LOWLANDS-
BELLEVUE AND VICINITY-SEATTLE AND VICINITY-BREMERTON AND VICINITY-
CASCADES OF WHATCOM AND SKAGIT COUNTIES-
CASCADES OF SNOHOMISH AND KING COUNTIES-
CASCADES OF PIERCE AND LEWIS COUNTIES-
453 PM PST MON DEC 8 2014

...HEAVY RAINFALL TONIGHT THROUGH WEDNESDAY WILL LEAD TO AN
INCREASE RISK OF LANDSLIDES IN WESTERN WASHINGTON...

HEAVY RAINFALL OF 9 TO 13 INCHES IN THE OLYMPICS AND NORTH
CASCADES WITH 2 TO 6 INCHES ELSEWHERE IS EXPECTED DURING THE TWO
AND HALF DAY PERIOD ENDING LATE WEDNESDAY NIGHT. THIS AMOUNT OF
RAIN WILL PUT EXTRA PRESSURE ON SOIL INSTABILITY...LEADING TO AN
INCREASED RISK OF LANDSLIDES.

WITH AN ELEVATED LANDSLIDE RISK...RAINFALL INDUCED LANDSLIDES ARE
POSSIBLE DURING BURSTS OF INTENSE RAINFALL OR WHEN THERE IS HEAVY
RAINFALL OVER A PERIOD OF A DAY OR TWO. A GRADUALLY DIMINISHING
RISK OF LANDSLIDES WILL CONTINUE FOR SEVERAL DAYS AFTER THE RAIN
ENDS. AREAS MOST SUSCEPTIBLE TO LANDSLIDES ARE STEEP COASTAL
BLUFFS AND OTHER STEEP HILLSIDES.

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

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

WWW.WEATHER.GOV/SEATTLE

Special weather statement, Dec 8, 5:06 PM PST, 1 hour 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
506 PM PST MON DEC 8 2014

WAZ001-503-504-506-507-509>517-555-556-558-559-567>569-100115-
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-
WESTERN SKAGIT COUNTY-EVERETT AND VICINITY-TACOMA AREA-
ADMIRALTY INLET AREA-HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA-
OLYMPICS-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
EAST PUGET SOUND LOWLANDS-BELLEVUE AND VICINITY-
SEATTLE AND VICINITY-BREMERTON AND VICINITY-
CASCADES OF WHATCOM AND SKAGIT COUNTIES-
CASCADES OF SNOHOMISH AND KING COUNTIES-
CASCADES OF PIERCE AND LEWIS COUNTIES-
506 PM PST MON DEC 8 2014

...HEAVY RAINFALL TONIGHT THROUGH WEDNESDAY WILL LEAD TO AN
INCREASE RISK OF LANDSLIDES IN WESTERN WASHINGTON...
...STRONG WINDS POSSIBLE ACROSS WESTERN WASHINGTON ON THURSDAY...

HEAVY RAINFALL OF 9 TO 13 INCHES IN THE OLYMPICS AND NORTH
CASCADES WITH GENERALLY 2 TO 6 INCHES ELSEWHERE IS EXPECTED
DURING THE TWO AND HALF DAY PERIOD ENDING LATE WEDNESDAY NIGHT.
THIS AMOUNT OF RAIN WILL PUT EXTRA PRESSURE ON SOIL INSTABILITY...
LEADING TO AN INCREASED RISK OF LANDSLIDES.

WITH AN ELEVATED LANDSLIDE RISK...RAINFALL INDUCED LANDSLIDES ARE
POSSIBLE DURING BURSTS OF INTENSE RAINFALL OR WHEN THERE IS HEAVY
RAINFALL OVER A PERIOD OF A DAY OR TWO. A GRADUALLY DIMINISHING
RISK OF LANDSLIDES WILL CONTINUE FOR SEVERAL DAYS AFTER THE RAIN
ENDS. AREAS MOST SUSCEPTIBLE TO LANDSLIDES ARE STEEP COASTAL
BLUFFS AND OTHER STEEP HILLSIDES.

LOW PRESSURE SYSTEM WILL DEVELOP OFF THE NORTHERN CALIFORNIA
COAST WEDNESDAY NIGHT THEN MOVE INLAND ACROSS WESTERN WASHINGTON
ON THURSDAY. THERE IS STILL A LOT UNCERTAINTY CONCERNING THE EXACT
TRACK AND DEPTH OF THE LOW...WITH ONLY SLIGHT VARIATIONS MAKING A
BIG DIFFERENCE ON THE POTENTIAL IMPACTS. HOWEVER...IT DOES APPEAR
THERE IS SOME THREAT OF STRONG WINDS ACROSS PORTIONS OF WESTERN
WASHINGTON THURSDAY INCLUDING THE GREATER PUGET SOUND URBAN
CORRIDOR. MONITOR THE LATEST FORECASTS FROM THE NATIONAL WEATHER
SERVICE ON THIS POTENTIAL HIGH WIND EVENT.

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

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

WWW.WEATHER.GOV

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 9, 3:08 AM PST	Small Craft Advisory	SEW		23 hr
Dec 9, 3:08 AM PST	Storm Watch	SEW		11 hr
Dec 9, 3:38 AM PST	River Flood Warning	SEW	Clallam	46 hr
Dec 9, 3:38 AM PST	River Flood Warning	SEW	Clallam	47 hr
Dec 9, 7:21 AM PST	High Wind Warning	SEW	San Juan	6 hr
Dec 9, 2:26 PM PST	High Wind Watch	SEW	San Juan	44 hr
Dec 9, 2:26 PM PST	High Wind Warning	SEW	San Juan	26 hr
Dec 9, 2:28 PM PST	Coastal Flood Watch	SEW	San Juan	12 hr
Dec 9, 2:28 PM PST	Coastal Flood Advisory	SEW	San Juan	22 hr
Dec 9, 2:28 PM PST	Storm Watch	SEW		49 hr
Dec 9, 2:28 PM PST	Storm Warning	SEW		26 hr
Dec 9, 2:28 PM PST	High Surf Advisory	SEW		31 hr

Nearby

River Flood Warnings in Washington, 2014 Every river flood warning in 2014

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.