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December 2023 Weather in the PNW


TigerWoodsLibido

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Buckle up...

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Springfield, Oregon regular season 2023-24 Stats:

  • Coldest high: 25F (Jan 14, 2024)
  • Coldest low: 20F (Jan 14, 2024)
  • Days with below freezing temps: 20 (Most recent: Feb 13, 2024)
  • Days with sub-40F highs: 4 (Most recent: Jan 16, 2024)
  • Total snowfall: 0.0"
  • Total ice: 2.25”
  • Last accumulating snowfall on roads: Dec 27, 2021 (1.9")
  • Last sub-freezing high: Jan 15, 2024 (27F)
  • Last White Christmas: 1990
  • Significant wind events (gusts 45+): 0

Personal Stats:

  • Last accumulating snowfall on roads: Dec 27, 2021
  • Last sub-freezing high: Jan 16, 2024 (32F)
  • Last White Christmas: 2008
  • Total snowfall since joining TheWeatherForums: 42.0"
  • Sub-freezing highs since joining TheWeatherForums: 4

 

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  • Phil pinned this topic

Fall ended up pretty close to normal in the Seattle area.

Temp departure for the 3 months combined was -0.5 while the overall precip departure was +.28 (12.11 actual vs. normal of 11.83).

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**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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Still some wet snowflakes here this morning and 35 degrees and minor accumulation still on the ground from yesterday evening.    The snow falling now is not sticking and the wind is picking up.  

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**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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The NWS issued this not to long ago. I'm surprised they are not issuing a Wind Advisory 🤔

Flood Watch

Flood Watch
National Weather Service Portland OR
529 AM PST Fri Dec 1 2023

ORZ001>008-010-012-WAZ020>022-039-040-012130-
/O.NEW.KPQR.FA.A.0002.231201T1329Z-231206T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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 Stayton, Cannon Beach, Corvallis, Cougar,
Castle Rock, Sweet Home, Tillamook, Yacolt, Vancouver, Cape
Foulweather, Albany, Silver Falls State Park, Yachats, Pacific
City, Salem, Gresham, Ariel, Netarts, Trask, Oregon City, Elk
Mountain, Long Beach, Lincoln City, Astoria, Sunset Summit,
Washougal, Lees Camp, Eugene, Kelso, Woodburn, Willapa, Vernonia,
Lebanon, Ryderwood, Raymond, Jewell, Ridgefield, Toutle, Lake
Merwin, Burnt Woods, Florence, McMinnville, Jasper, Longview,
Vida, Frances, Swisshome, St. Helens, Veneta, Wilsonville, Battle
Ground, Newport, Tidewater, Estacada, Ocean Park, Cottage Grove,
Dallas, Portland, Amboy, Cape Disappointment, Clatskanie,
Hillsboro, Lowell, Troutdale, Sandy, Grande Ronde, Springfield,
Yale Lake, Cathlamet, and Naselle
529 AM PST Fri Dec 1 2023

...FLOOD WATCH IN EFFECT THROUGH TUESDAY AFTERNOON...

* WHAT...Flooding caused by excessive rainfall is possible.

* 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 Tuesday 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. Flooding may occur
  in poor drainage and urban areas.

* ADDITIONAL DETAILS...
  - A series of atmospheric rivers will bring periods of
    widespread heavy rain through early next week. Cascade snow
    accumulations through Saturday morning will experience heavy
    rain Saturday night into Sunday morning which will contribute
    to excessive run off. Total rain amounts for the entire
    weekend range between 3.0-5.0 inches along the coast, 4.5-6.5
    inches over the Willapa Hills and Oregon Coast Range, and 3-4
    inches across the interior lowlands, with 4.0-7.0 inches of
    rain expected over the Cascades, Cascade foothills, and
    western Columbia River Gorge. 2.5-3.5 inches of rain is
    expected for central Columbia River Gorge and Upper Hood
    River Valley. Localized heavy rain will lead to higher rain
    totals.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. Given the aforementioned
rainfall amounts expected this weekend, river levels will be rising
quickly. Most rivers have anywhere from a 30-50% chance of reaching
at least minor flood stage, except the mainstem Columbia and
Willamette Rivers which is less than 10% chance. Coastal rivers
however have a 40-60% chance of reaching minor flood stage and
20-30% chance for reaching major
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We're going to get snow here in Leavenworth at least for awhile.  How much?  Certainly difficult to forecast.  Good discussion from Spokane NWS.

".I am not sold on the colder air in the Leavenworth region 
being scrubbed out rapidly tonight. This makes a huge difference in snow totals for Locations such as Leavenworth. The National blend only has 2 inches while the UW-WRF ensembles up to 20" for Leavenworth. Needless to say, confidence is very low for them. The snow ratios would be below 10:1 which would mean very wet and heavy snow for Leavenworth."

 

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Had just barely measurable .10 of snow overnight. No rain or snow currently but was on the low end for my area. Should be getting rain later.

Garfield County/Pomeroy, WA:

2023-2024 Snowfall totals: 14.3 inches

HIghest snow total (per event): 5.8 inches total 1/11/24 - 1/12/24.

Most recent accumulation (non trace): 0.20 inches on 2/26/24

Days with  trace or more snowfall: 12/01/23 (0.60), 1/8/24 (1.0), 1/10/24 (3.5), 1/11/23 (3.5 inches with Thundersnow; separate event from prior day), 1/12/24 (2.30). 1/14/24 (T), 1/17/24 (1.20 inches), 1/18/24 (1.5 inches), 1/19/24 (0.20), 2/09/24 (0.30), 2/26/24 (0.20-mainly graupel)

First Freeze: 10/27/2023

Last Sub freezing Day: 1/20/24 (12th) (8 days in a row from 1/12/24-1/20/24)

Coldest low: -12F (!!!!!!!!) (1/12/24)

Last White Christmas: 2022 at my location (on ground)

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Light snow falling now. Temps are rising so doubting I'll get any new stickage other than what fell last night which is still there.

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Garfield County/Pomeroy, WA:

2023-2024 Snowfall totals: 14.3 inches

HIghest snow total (per event): 5.8 inches total 1/11/24 - 1/12/24.

Most recent accumulation (non trace): 0.20 inches on 2/26/24

Days with  trace or more snowfall: 12/01/23 (0.60), 1/8/24 (1.0), 1/10/24 (3.5), 1/11/23 (3.5 inches with Thundersnow; separate event from prior day), 1/12/24 (2.30). 1/14/24 (T), 1/17/24 (1.20 inches), 1/18/24 (1.5 inches), 1/19/24 (0.20), 2/09/24 (0.30), 2/26/24 (0.20-mainly graupel)

First Freeze: 10/27/2023

Last Sub freezing Day: 1/20/24 (12th) (8 days in a row from 1/12/24-1/20/24)

Coldest low: -12F (!!!!!!!!) (1/12/24)

Last White Christmas: 2022 at my location (on ground)

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