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COLD! Protect your plants!
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John S
PDX OR
2834 Posts
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1
January 12, 2024 - 7:39 am

Cover them or bring them in! 13 degrees in Portland!

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Chris M
Philomath, OR
156 Posts
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2
January 12, 2024 - 1:06 pm

Its 43 in Philomath, but its supposed to get very cold at night in the next few days.

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davem
360 Posts
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3
January 13, 2024 - 10:44 am

I put Christmas lights on a couple of my loquat branches which have pollinated flowers, then put a few layers of bags etc. over them, with bungee cords. However during the night the wind blew the extension cord plug out of the outlet!!!!  The cord was draped over some shrubs which apparently pulled on the cord. We are in Camas. It is 12 degrees so I'm sure my loquat flowers are toast.

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Chris M
Philomath, OR
156 Posts
(Online)
4
January 13, 2024 - 11:49 am

Well its 26 and snowing here(Philomath), so temp dropped big time. 

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jafar
780 Posts
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5
January 13, 2024 - 12:04 pm

@davem Sorry to hear that about your loquat.  Has it fruited before? 

I'd been paying attention to what the low temperature might be, but hadn't factored in the wind.  I'm just hoping that we don't lose power while its super cold and will assess how things fared later.   It probably wasn't the best idea to transplant my Shangjuan Lemon already.  I've protected nothing.  

At least my generator shelter seems unfazed.

It's supposedly 14 on the side of the house and 16.5 in the near orchard.  But I question the second one since its the warmest weather station in the area.  It matched the neighbors pretty well when things were warmer though.

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Larry_G
187 Posts
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6
January 13, 2024 - 12:31 pm

Record low PDX for 13 Jan is 11 degrees, the record is only 7 years old.

However, the high for the date will be 18 or 19, this is only the 10th time since 1938

that it failed to make 20 degrees for a daily high, and the first time in 33 years.

 

In this cold snap's favor is the cloud cover and high humidity (84% currently at the house).

Lack of snow cover may result in more plant damage.

The low temperature at the house today is 13.

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Larry_G
187 Posts
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7
January 13, 2024 - 1:20 pm

...and it gets stranger. The past hour has been pure sleet.

This requires a layer of above-freezing air to melt the snowflakes (1000 feet thick should do),

and the below-freezing air at the surface needs to be thick enough to re-freeze the droplets (1000 feet should do).

I have never seen sleet at 14 degrees before. Perhaps Rooney when in Alaska has.

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davem
360 Posts
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8
January 13, 2024 - 1:58 pm

jafar said
@davem Sorry to hear that about your loquat.  Has it fruited before? 

@jafar not yet. It has bloomed the last 3 years, and pretty sure was pollinated. But we've had late cold events every year. The photos are from Dec. 20

20231220_122820.jpg20231220_122817.jpg

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jafar
780 Posts
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9
January 13, 2024 - 2:24 pm

Beautiful.  Sorry.

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Rooney
Vancouver SW Washington
793 Posts
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10
January 14, 2024 - 2:15 pm

Larry_G said (yesterday)

I have never seen sleet at 14 degrees before. Perhaps Rooney when in Alaska has.

  

I don't actually think I have. Alaska for me is Fairbanks which I think has the least amount of winds that can tunnel down or up freezing air. Those from Anchorage and being nearest to large mountains (probably more similar to here or the George) are people that would witness such a thing.

PDX_data.png

This data is from PDX over the past two and a half days and the tool used to plot the data was taken from the following links, and then added upon with a PC tool for legend and the (horizontal____) 32F level of freezing.

wunderground.com/history/daily (and going to January 12th, 2023 as a starting date)

W3Schools Tryit Editor

The other free PC tools were free version of Tabula that runs on free Java and a graphic editor that comes along with PCs.

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John S
PDX OR
2834 Posts
(Offline)
11
January 14, 2024 - 8:41 pm

Good news: I brought my kumquats and Tree collards into the garage in time.

Bad news: the oak half-barrel that one of the kumquats was in,  literally self-destructed as I placed it inside.

Not so bad news: The plants kept their form. I realized that the pot was on the way out last year, so I got another one beforehand. I will repot it when it warms up.

JOhn S
PDX OR

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Larry_G
187 Posts
(Offline)
12
January 15, 2024 - 11:20 am

I recognized the X-axis HH:53 as typical timestamps of KPDX weather data.

On the 13th the airport started at 21 degrees, spoiling the potential long-term record of a sub-20 day.

The instruments at the house have been running 2-3 degrees lower than KPDX.

We still have some ice accumulation to get through Wednesday the 17th.

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jafar
780 Posts
(Offline)
13
January 18, 2024 - 9:24 am

Rooney,

I appreciate that you took the effort to break the X axis into days and morn/afternoon.  It very much helps the readability of the chart.  At least for me, it was probably the difference between looking into it and looking past it.

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