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2 products issued by NWS for: Lloyd Center OR

Flood Watch

Flood Watch
National Weather Service Portland OR
328 PM PST Mon Dec 4 2023

North Oregon Coast-Central Oregon Coast-Coast Range of Northwest
Oregon-Central Coast Range of Western Oregon-Lower Columbia-
Greater Portland Metro Area-Central Willamette Valley-South
Willamette Valley-Northern Oregon Cascade Foothills-Cascade
Foothills in Lane County-Willapa Hills-South Washington Coast-I-
5 Corridor in Cowlitz County-Greater Vancouver Area-South
Washington Cascade Foothills-
Including the cities of Sunset Summit, Sandy, Salem, Cannon
Beach, Trask, Ridgefield, Cape Foulweather, Toutle, Ariel,
Netarts, Swisshome, Gresham, McMinnville, Veneta, Vida, Portland,
Lowell, Battle Ground, Kelso, Stayton, Burnt Woods, Troutdale,
Jewell, Oregon City, Hillsboro, Long Beach, Pacific City, Cougar,
Lebanon, Springfield, Estacada, Cottage Grove, Raymond,
Tillamook, St. Helens, Jasper, Clatskanie, Ocean Park, Willapa,
Florence, Lake Merwin, Longview, Vancouver, Newport, Woodburn,
Cathlamet, Ryderwood, Elk Mountain, Frances, Naselle, Dallas,
Silver Falls State Park, Wilsonville, Lees Camp, Albany, Yachats,
Astoria, Grande Ronde, Castle Rock, Washougal, Yale Lake, Lincoln
City, Tidewater, Corvallis, Vernonia, Sweet Home, Amboy, Cape
Disappointment, Eugene, and Yacolt
328 PM PST Mon Dec 4 2023


* WHAT...Flooding caused by excessive rainfall continues to be

* WHERE...Portions of northwest Oregon, including the following
  areas, Cascade Foothills in Lane County, Central Coast Range of
  Western Oregon, Central Oregon Coast, Central Willamette Valley,
  Coast Range of Northwest Oregon, Greater Portland Metro Area,
  Lower Columbia, North Oregon Coast, Northern Oregon Cascade
  Foothills and South Willamette Valley and southwest Washington,
  including the following areas, Greater Vancouver Area, I-5
  Corridor in Cowlitz County, South Washington Cascade Foothills,
  South Washington Coast and Willapa Hills.

* WHEN...Through Wednesday afternoon.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.
  Creeks and streams may rise out of their banks.

  - Periods of rain will continue Monday through Wednesday,
    heaviest Monday night through Tuesday night as another
    atmospheric river aims at southwest Washington and northwest
    Oregon. This is also when flooding concerns are highest.

    Additional rain amounts expected between 4 pm PST Monday and
    4 am PST Wednesday (36 hour rain totals): 3 to 5 inches along
    the south Washington coast, north Oregon coast, and central
    Oregon coast, 3 to 5 inches with localized amounts up to 7.5
    inches over the Coast Range and Willapa Hills (highest
    amounts in higher terrain), 1.25 to 2.5 inches across the
    interior lowlands of southwest Washington and northwest
    Oregon (highest from Salem northward), 1 to 6 inches across
    the south Washington and north Oregon Cascades, 0.25 to 1.5
    inches for the Lane County Cascades, 2 to 4 inches for the
    Columbia River Gorge, and up to 2 inches for the Hood River

  - Http://


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.




Flood Advisory

Flood Advisory
National Weather Service Portland OR
258 PM PST Mon Dec 4 2023

Benton OR-Clackamas OR-Clatsop OR-Columbia OR-Lane OR-Lincoln OR-
Linn OR-Marion OR-Multnomah OR-Polk OR-Tillamook OR-Washington OR-
Yamhill OR-Clark WA-Cowlitz WA-Pacific WA-Wahkiakum WA-
258 PM PST Mon Dec 4 2023


* WHAT...Urban and small stream flooding caused by excessive
  rainfall is expected.

* WHERE...Much of southwest Washington and northwest Oregon,
  excluding the high Cascades, mid-Columbia Gorge and Hood River

* WHEN...Until 100 AM PST Thursday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
  Ponding of water is expected later tonight and Wednesday.  Areas
  most likely to see such flooding will be the coast, coast
  mountains, and throughout the I-5 corridor.

  - At 246 PM PST, Rain, heavy at times, will spread across
    southwest Washington and far northwest Oregon later tonight.
    Rain will gradually spread to the east and southeast through
    Wednesday morning. Another 3 to 6 inches of rain are expected
    along the coast and coast mountains, with 1 to 3 inches for
    the interior lowlands. Rainfall more variable in the
    Cascades, with 1 to 4 inches expected, heaviest being north
    of Santiam River basin. This will cause urban and small
    stream flooding. With already saturated soils, this new
    rainfall will cause many smaller streams and culverts to run
    full, and cause minor flooding. In addition, areas with poor
    drainage, such as railroad crossings and underpasses, will
    quickly see standing water.
  - Rainfall will gradually ease later Wednesday afternoon.


Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.


LAT...LON 4460 12391 4457 12397 4556 12395 4549 12387
      4550 12387 4664 12406 4638 12383 4664 12396
      4668 12370 4679 12410 4679 12337 4638 12336
      4639 12247 4555 12225 4565 12192 4354 12274
      4394 12366 4386 12416



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