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WHAT: Tidal overflow flooding expected.
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WHERE: Clatsop and Tillamook Coast, and South Washington Coast.
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WHEN: From noon today to 5 PM PST this afternoon.
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IMPACTS: Minor flooding, up to one foot above ground level, during high tides is expected in the low lying areas near bays, sloughs, and the lower reaches of the coastal rivers.
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ADDITIONAL DETAILS: While the Garibaldi tidal gauge is anticipated to only peak near 9 ft around 3-4 PM Tuesday, rivers flowing into the Nehalem and Tillamook Bays will be running unusually high. The Toke Point tidal gauge is expected to peak near 9.5 ft around 3-4 PM Tuesday, and near 9 ft at Tongue Point. The Willapa River, Wilson River, Trask River, Nehalem River and Naselle River will likely remain above 80% of flood flow during high tide, and possibly the Nestucca River as well. This will temporarily increase chances for tidal overflow flooding around high tide Tuesday afternoon along the south Washington, north Oregon and central Oregon coast in the low lying areas near bays, sloughs, and lower reaches of the coastal rivers.
* WHAT...Tidal overflow flooding expected. * WHERE...Clatsop and Tillamook Coast, and South Washington Coast. * WHEN...From noon today to 5 PM PST this afternoon. * IMPACTS...Minor flooding, up to one foot above ground level, during high tides is expected in the low lying areas near bays, sloughs, and the lower reaches of the coastal rivers. * ADDITIONAL DETAILS...While the Garibaldi tidal gauge is anticipated to only peak near 9 ft around 3-4 PM Tuesday, rivers flowing into the Nehalem and Tillamook Bays will be running unusually high. The Toke Point tidal gauge is expected to peak near 9.5 ft around 3-4 PM Tuesday, and near 9 ft at Tongue Point. The Willapa River, Wilson River, Trask River, Nehalem River and Naselle River will likely remain above 80% of flood flow during high tide, and possibly the Nestucca River as well. This will temporarily increase chances for tidal overflow flooding around high tide Tuesday afternoon along the south Washington, north Oregon and central Oregon coast in the low lying areas near bays, sloughs, and lower reaches of the coastal rivers.
A Coastal Flood Advisory means that tidal overflow flooding is expected. Coastal residents in the warned area should be alert for rising water, and take appropriate action to protect life and property.
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WHAT: Flooding caused by excessive rainfall continues to be possible.
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WHERE: Counties in Oregon: Benton, Clackamas, Clatsop, Columbia, Hood River, western portions of Lane, Lincoln, Linn, Marion, Multnomah, Polk, Tillamook, Washington, and Yamhill. Counties in Washington: Clark, Cowlitz, Pacific, Skamania, and Wahkiakum.
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WHEN: Through Thursday afternoon.
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IMPACTS: Excessive runoff will result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Landslides and debris flows are possible during this flood event. People, structures, and roads located below steep slopes, in canyons, and near the mouths of canyons may be at serious risk from rapidly moving landslides.
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ADDITIONAL DETAILS:
- Over the past 24 hours, around 4 to 7 inches of rain has fallen over the north Oregon Cascades, south Washington Cascades, Willapa Hills, north Oregon Coast Range, south Washington coast, and northern and central Oregon coast. 1.5 to 4.5 inches of rain has fallen over the Lower Columbia, Cowlitz Valley, and greater Portland/Vancouver metro. This will maintain an elevated threat for urban and river flooding. An additional 1 to 2 inches of rain is expected Tuesday morning through Thursday afternoon over the interior lowlands to the north of Eugene. 3.5 to 6.5 inches of additional rain is expected over the Cascades and coastal mountains, mainly to the north of Lane County. Landslides in areas of steep terrain will be possible due to saturated soils, as well as debris flows over recently burned areas.
- http://www.weather.gov/safety/flood
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Counties in Oregon: Benton, Clackamas, Clatsop, Columbia, Hood River, western portions of Lane, Lincoln, Linn, Marion, Multnomah, Polk, Tillamook, Washington, and Yamhill. Counties in Washington: Clark, Cowlitz, Pacific, Skamania, and Wahkiakum. * WHEN...Through Thursday afternoon. * IMPACTS...Excessive runoff will result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Landslides and debris flows are possible during this flood event. People, structures, and roads located below steep slopes, in canyons, and near the mouths of canyons may be at serious risk from rapidly moving landslides. * ADDITIONAL DETAILS... - Over the past 24 hours, around 4 to 7 inches of rain has fallen over the north Oregon Cascades, south Washington Cascades, Willapa Hills, north Oregon Coast Range, south Washington coast, and northern and central Oregon coast. 1.5 to 4.5 inches of rain has fallen over the Lower Columbia, Cowlitz Valley, and greater Portland/Vancouver metro. This will maintain an elevated threat for urban and river flooding. An additional 1 to 2 inches of rain is expected Tuesday morning through Thursday afternoon over the interior lowlands to the north of Eugene. 3.5 to 6.5 inches of additional rain is expected over the Cascades and coastal mountains, mainly to the north of Lane County. Landslides in areas of steep terrain will be possible due to saturated soils, as well as debris flows over recently burned areas. - http://www.weather.gov/safety/flood
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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