Weather!

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BDanielMayfield
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Re: Weather!

Post by BDanielMayfield » Tue Jan 01, 2019 3:53 pm

Right now here in St. Anthony Idaho it is -16F, which is a new personal low. :brr:
Last year (our first winter up here) the lowest it ever got was -5.

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Chris Peterson
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Re: Weather!

Post by Chris Peterson » Tue Jan 01, 2019 5:01 pm

BDanielMayfield wrote:
Tue Jan 01, 2019 3:53 pm
Right now here in St. Anthony Idaho it is -16F, which is a new personal low. :brr:
Last year (our first winter up here) the lowest it ever got was -5.
Yup, there's a slug of cold air sitting across the west. We hit -7°F this morning, although it's up to 4° now, which was the high for yesterday. Even with the extreme cold, we still got about three inches of snow yesterday, which is nice. Should start warming up by tomorrow.
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neufer
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Re: Weather!

Post by neufer » Tue Jan 01, 2019 6:55 pm

Chris Peterson wrote:
Tue Jan 01, 2019 5:01 pm
BDanielMayfield wrote:
Tue Jan 01, 2019 3:53 pm

Right now here in St. Anthony Idaho it is -16F, which is a new personal low. :brr:
Last year (our first winter up here) the lowest it ever got was -5.
Yup, there's a slug of cold air sitting across the west. We hit -7°F this morning, although it's up to 4° now, which was the high for yesterday. Even with the extreme cold, we still got about three inches of snow yesterday, which is nice. Should start warming up by tomorrow.
https://en.wikipedia.org/wiki/Aleutian_Low wrote:
<<The Aleutian Low is a semi-permanent low-pressure system located near the Aleutian Islands in the Bering Sea during the Northern Hemisphere winter. It is a climatic feature centered near the Aleutian Islands measured based on mean sea-level pressure. It is one of the largest atmospheric circulation patterns in Northern Hemisphere and represents one of the "main centers of action in atmospheric circulation."

The Aleutian Low is characterized by heavily influencing the path and strength of cyclones. Extratropical cyclones which form in the sub-polar latitudes in the North Pacific typically slow down and reach maximum intensity in the area of the Aleutian Low. Tropical cyclones that form in the tropical and equatorial regions of the Pacific can veer northward and get caught in the Aleutian Low. This is usually seen in the later summer seasons. Both the November 2011 Bering Sea cyclone and the November 2014 Bering Sea cyclone were post-tropical cyclones that had dissipated and restrengthened when the systems entered the Aleutian Low region. The storms are remembered and marked as two of the strongest storms to impact the Bering Sea and Aleutian Islands with pressure dropping below 950 mb in each system. The magnitude of the low pressure creates an extreme atmospheric disturbance, which can cause other significant shifts in weather.

The low serves as an atmospheric driver for low-pressure systems, post-tropical cyclones and their remnants and can generate strong storms that impact Alaska and Canada. Intensity of the low is strongest in the winter and almost completely dissipates in the summer. The circulation pattern is measured based on averages of synoptic features help mark the locations of cyclones and their paths over a given time period. However, there is significant variability in these measurements. The circulation pattern shifts during the Northern Hemisphere summer when the North Pacific High takes over and breaks apart the Aleutian Low. This high-pressure circulation pattern strongly influences tropical cyclone paths. The presence of the Eurasian and North American continents prevent a continuous belt of low pressure from developing in the Northern Hemisphere sub-polar latitudes, which would mirror the circumpolar belt of low pressure and frequent storms in the Southern Ocean. However, the presence of the continents disrupts this motion, and the subpolar belt of low pressure is well developed only in the North Pacific (the Aleutian Low) and the North Atlantic (the Icelandic Low, which is located between Greenland and Iceland).
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Re: Weather!

Post by BDanielMayfield » Tue Jan 01, 2019 8:53 pm

Nice that we don't have "Roaring Forties" type weather up here in the north.
The presence of the Eurasian and North American continents prevent a continuous belt of low pressure from developing in the Northern Hemisphere sub-polar latitudes, which would mirror the circumpolar belt of low pressure and frequent storms in the Southern Ocean. However, the presence of the continents disrupts this motion, and the subpolar belt of low pressure is well developed only in the North Pacific (the Aleutian Low) and the North Atlantic (the Icelandic Low, which is located between Greenland and Iceland).
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Chris Peterson
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Re: Weather!

Post by Chris Peterson » Tue Jan 01, 2019 9:38 pm

neufer wrote:
Tue Jan 01, 2019 6:55 pm
Chris Peterson wrote:
Tue Jan 01, 2019 5:01 pm
BDanielMayfield wrote:
Tue Jan 01, 2019 3:53 pm

Right now here in St. Anthony Idaho it is -16F, which is a new personal low. :brr:
Last year (our first winter up here) the lowest it ever got was -5.
Yup, there's a slug of cold air sitting across the west. We hit -7°F this morning, although it's up to 4° now, which was the high for yesterday. Even with the extreme cold, we still got about three inches of snow yesterday, which is nice. Should start warming up by tomorrow.
  • Blame a Grand Aleutian Low:
What do you mean blame? You mean credit!
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neufer
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Re: Weather!

Post by neufer » Tue Jan 01, 2019 9:47 pm

BDanielMayfield wrote:
Tue Jan 01, 2019 8:53 pm

Nice that we don't have "Roaring Forties" type weather up here in the north.
The presence of the Eurasian and North American continents prevent a continuous belt of low pressure from developing in the Northern Hemisphere sub-polar latitudes, which would mirror the circumpolar belt of low pressure and frequent storms in the Southern Ocean. However, the presence of the continents disrupts this motion, and the subpolar belt of low pressure is well developed only in the North Pacific (the Aleutian Low) and the North Atlantic (the Icelandic Low, which is located between Greenland and Iceland).
As the Arctic Ocean warms/melts the jet stream will have even
larger and more stable meanders resulting in extended periods of:
  • 1. Drought
    2. Precipitation
    3. Cold spells and
    4. Warm spells
Last edited by neufer on Tue Jan 01, 2019 10:37 pm, edited 1 time in total.
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Re: Weather!

Post by bystander » Tue Jan 01, 2019 9:58 pm

The arctic cold moved into Oklahoma last night. It's the coldest we've been so far this Winter. We're expecting snow tomorrow night and Thursday.
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neufer
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Re: Weather!

Post by neufer » Wed Jan 02, 2019 2:22 pm

.
.
.
bystander wrote:
Tue Jan 01, 2019 9:58 pm

The arctic cold moved into Oklahoma last night. It's the coldest we've been so far this Winter. We're expecting snow tomorrow night and Thursday.
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Fred the Cat
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Re: Weather!

Post by Fred the Cat » Thu Jan 03, 2019 7:00 pm

What a difference a couple of months make. Back in early November this stump was reflecting fall.
IMG_5238.JPG
We decided to strap on the cross-country skis yesterday and the same stump was wearing winter.
IMG_6092.JPG
Both times Bojo loved the trip.
IMG_6071.JPG
:ssmile:
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rstevenson
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Re: Weather!

Post by rstevenson » Fri Jan 04, 2019 8:01 pm

Bojo looks a little like a wolverine in that view, Fred. But he appears to be a lot friendlier.

Rob

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Re: Weather!

Post by BDanielMayfield » Fri Jan 04, 2019 9:19 pm

rstevenson wrote:
Fri Jan 04, 2019 8:01 pm
Bojo looks a little like a wolverine in that view, Fred. But he appears to be a lot friendlier.

Rob
I thought the same thing Rob. But wolverines don't wear booties. :lol2:
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Re: Weather!

Post by neufer » Fri Jan 04, 2019 10:59 pm

BDanielMayfield wrote:
Fri Jan 04, 2019 9:19 pm
rstevenson wrote:
Fri Jan 04, 2019 8:01 pm

Bojo looks a little like a wolverine in that view, Fred. But he appears to be a lot friendlier.
I thought the same thing Rob. But wolverines don't wear booties. :lol2:
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Re: Weather!

Post by Fred the Cat » Fri Jan 04, 2019 11:02 pm

BDanielMayfield wrote:
Fri Jan 04, 2019 9:19 pm
rstevenson wrote:
Fri Jan 04, 2019 8:01 pm
Bojo looks a little like a wolverine in that view, Fred. But he appears to be a lot friendlier.

Rob
I thought the same thing Rob. But wolverines don't wear booties. :lol2:
If he came face-to-face with a wolverine...
IMG_5682 (2).JPG
the wolverine would laugh too. :lol2:
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Re: Weather!

Post by neufer » Sat Jan 05, 2019 4:03 am

https://en.wikipedia.org/wiki/Denver_Riggleman wrote:
<<In the 2018 elections, Republican Denver Lee Riggleman III defeated Democratic nominee Leslie Cockburn, receiving 53% of the vote to Cockburn's 47%. During the campaign, Cockburn accused Riggleman of being a "devotee of Bigfoot erotica", based on an image he shared from his Instagram to promote a book titled The Mating Habits of Bigfoot and Why Women Want Him. In an interview with CRTV Riggleman stated that the image was an obvious joke, but that he had an interest in Bigfoot, and co-authored the actual self-published book Bigfoot Exterminators, Inc.: The Partially Cautionary, Mostly True Tale of Monster Hunt 2006, with ESPN writer Don Barone. In a phone interview with The Washington Post, he clarified that it was an "anthropological book sort of based on parody and satire" and said "I thought it was funny. There is no way that anybody's dumb enough to think this is real." Before stating that he did not want to alienate "Bigfoot voters," he said that he does "not believe that Bigfoot is real.">>
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Chris Peterson
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Re: Weather!

Post by Chris Peterson » Wed Jan 16, 2019 1:05 am

Crazy cold!

A friend and I headed out for a day of snowshoeing in the high country, up above 11,000 feet. Forecast was for temps in the mid 30s, perfect for a good workout. Left the house at 8am and the temperature was 22°F and rising, nice and sunny. But we had to cross a high altitude valley called South Park (yes, that South Park) a half hour north of the house. The temperature there plummeted to -24° F (-31°C)! Never driven in such cold conditions (still completely sunny). The fuel line froze. I was able to nurse the car along at about 40 mph, barely running, until we got out of the valley. Over 10 minutes the temperature went back up into the 20s, and the car recovered. Another half hour, at the trail head, it was above freezing and stayed that way all day. Coming back at 4pm it dropped to 0°F across South Park, but was above freezing going in and coming out. Never experienced anything so extreme before. A 60°F temperature shift over less than 10 miles, no more than 1000 feet in elevation change, and no more than a half hour. Wow.

But a beautiful day in the mountains!
_
IMG_20190115_132358p.jpg
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"Oh, my God! The inversion almost killed Kris!"

Post by neufer » Thu Jan 17, 2019 3:58 pm


Chris Peterson wrote:
Wed Jan 16, 2019 1:05 am

Crazy cold!

A friend and I headed out for a day of snowshoeing in the high country, up above 11,000 feet. Forecast was for temps in the mid 30s, perfect for a good workout. Left the house at 8am and the temperature was 22°F and rising, nice and sunny. But we had to cross a high altitude valley called South Park (yes, that South Park) a half hour north of the house. The temperature there plummeted to -24° F (-31°C)! Never driven in such cold conditions (still completely sunny). The fuel line froze. I was able to nurse the car along at about 40 mph, barely running, until we got out of the valley. Over 10 minutes the temperature went back up into the 20s, and the car recovered. Another half hour, at the trail head, it was above freezing and stayed that way all day. Coming back at 4pm it dropped to 0°F across South Park, but was above freezing going in and coming out. Never experienced anything so extreme before. A 60°F temperature shift over less than 10 miles, no more than 1000 feet in elevation change, and no more than a half hour. Wow.
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Fred the Cat
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Re: Weather!

Post by Fred the Cat » Thu Jan 17, 2019 6:05 pm

Colorado has some odd weather but a extreme temperature inversion at high elevation is downright perplexing. :shock:

Getting stuck in such weather because of fuel or mechanical problems makes planning essential. It sounds like your day in South Park was memorable. :thumb_up:
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Re: Weather!

Post by BDanielMayfield » Wed Jan 30, 2019 3:08 pm

Wind chill only -14F right now. Glad I'm west of the main spine of the Rockies.
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Ann
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Re: Weather!

Post by Ann » Wed Jan 30, 2019 4:31 pm

Chris Peterson wrote:
Wed Jan 16, 2019 1:05 am
Crazy cold!

A friend and I headed out for a day of snowshoeing in the high country, up above 11,000 feet. Forecast was for temps in the mid 30s, perfect for a good workout. Left the house at 8am and the temperature was 22°F and rising, nice and sunny. But we had to cross a high altitude valley called South Park (yes, that South Park) a half hour north of the house. The temperature there plummeted to -24° F (-31°C)! Never driven in such cold conditions (still completely sunny). The fuel line froze. I was able to nurse the car along at about 40 mph, barely running, until we got out of the valley. Over 10 minutes the temperature went back up into the 20s, and the car recovered. Another half hour, at the trail head, it was above freezing and stayed that way all day. Coming back at 4pm it dropped to 0°F across South Park, but was above freezing going in and coming out. Never experienced anything so extreme before. A 60°F temperature shift over less than 10 miles, no more than 1000 feet in elevation change, and no more than a half hour. Wow.

But a beautiful day in the mountains!
_
IMG_20190115_132358p.jpg
That's amazing, Chris. But just imagining such cold is terrible to me.

The coldest we have had in Malmö so far this winter season is -7 oC. And that just lasted for one night. We haven't had much snow at all this winter, although I expect winter to dig in its heels and become much harsher soon. It will soon be February.

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Chris Peterson
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Re: Weather!

Post by Chris Peterson » Wed Jan 30, 2019 5:43 pm

Ann wrote:
Wed Jan 30, 2019 4:31 pm
That's amazing, Chris. But just imagining such cold is terrible to me.

The coldest we have had in Malmö so far this winter season is -7 oC. And that just lasted for one night. We haven't had much snow at all this winter, although I expect winter to dig in its heels and become much harsher soon. It will soon be February.
We went snowshoeing yesterday up to the old Boston Mine ruins from the late 1800s, in a cirque nearly 12,000 feet high, below ragged peaks reaching nearly 14,000 feet. The snow base was probably 6 feet deep, with some drifts running twice that. Temperature at the start was about 18°F (-8°C), and dropped to around 5°F (-15°C) at the top, although it was windy up there, making it feel colder. But it was sunny, and we only needed light winter clothes given the exertion of snowshoeing. Didn't feel cold except when we had stopped for a while to eat at the top.

For views like this, for spots like this, no amount of cold is too much!
_
IMG_20190129_134900p.jpg
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Global WAMING

Post by neufer » Wed Jan 30, 2019 7:16 pm

https://en.wikipedia.org/wiki/Old_Weather wrote:
<<Old Weather is a Zooniverse online weather data project that currently invites members of the public to assist in digitising weather observations recorded in US log books dating from the mid-19th century onwards. It is an example of citizen science that enlists members of the public to help in scientific research. It contributes to the Atmospheric Circulation Reconstructions over the Earth initiative. Data collected by Old Weather has been used by at least five different climate reanalysis projects, including HURDAT, SODA and ECMWF. In February 2013, the project was awarded the Royal Meteorological Society IBM Award for Meteorological Innovation that Matters.[3]

Computer programs have not always proved unable to read handwriting reliably; the task is much better performed by the human brain and the results transferred to a digital form. In Old Weather's tutorial, would-be volunteers are shown how to digitise a weather record. Further instructions on how to transcribe the logs are available on the associated Old Weather forum. It is intended that the pages of the logs are digitised by at least three people. The results will be used to make climate model projections and an improved database of weather extremes.

Currently, the log books of 2 US vessels are available, each of which have been scanned page by page, and the logs of another 21 vessels have been completed. More log books will be added at intervals. The transcriber notes the following from the log books: date, location (or voyage) and weather records, usually consisting of wind direction and strength, weather conditions, cloud type and/or amount of clear sky, barometric pressure and temperature readings. Other log entries, such as refueling figures and sightings of sea-ice, ships, people, landmarks or animals may also be recorded, as well as interesting events.

Because climate change is a very political issue, interested parties could try to corrupt the data by, say, entering temperature figures that are too high or too low. Because three sets of records for each data point will be entered, any set from a digitiser showing a marked deviation from the other records should be easily checkable and eliminated. Large-scale fraud is unlikely because the data is entered one log page at a time, and so is immune to a spam type of attack.>>
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Fred the Cat
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Re: Weather!

Post by Fred the Cat » Wed Jan 30, 2019 11:28 pm

If anyone knows about global waming it's our president! :oops:

In the future "landscape mode" may look more like this. :(
IMG_5175.JPG
Luckily, for now, the same terrain is pleasing too. :ssmile:
IMG_5376.JPG
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orin stepanek
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Re: Weather!

Post by orin stepanek » Sat Feb 09, 2019 1:29 pm

I think the huge amount of forest fires add a lot to warming of the atmosphere; but also tends to strip the land of oxygen making trees! Just the fact that there are more and more people with homes to heat! More cars! Volcanoes add gases etc; etc! The most important change we could do would be to go more electric; but a lot of electricity comes from fossil fuels! Plant more trees; prevent forest fires! Etc; etc!
Orin

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Re: Weather!

Post by BDanielMayfield » Sat Feb 09, 2019 2:24 pm

What's happened in especially California here last summer/fall and is happening now down in Australia is just beyond awful. Don't be fooled by temporary cold snaps. The planet is warming, and the warm up is beginning to have huge consequences.
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Chris Peterson
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Re: Weather!

Post by Chris Peterson » Sat Feb 09, 2019 4:25 pm

orin stepanek wrote:
Sat Feb 09, 2019 1:29 pm
I think the huge amount of forest fires add a lot to warming of the atmosphere; but also tends to strip the land of oxygen making trees! Just the fact that there are more and more people with homes to heat! More cars! Volcanoes add gases etc; etc! The most important change we could do would be to go more electric; but a lot of electricity comes from fossil fuels! Plant more trees; prevent forest fires! Etc; etc!
Wildfires are a very minor contributor to global warming. The amount of CO2 they release is small compared with anthropogenic emissions (primarily the burning of fossil fuels), and over decadal periods they are nearly carbon neutral, as the burned land becomes a carbon sink. Interestingly, the amount of CO2 released by wildfires has steadily decreased over the last century, as more and more forest land has been converted to crop land.

The second most significant contributor to global warming is deforestation, partly because of direct CO2 release from burning, partly due to a shift towards less efficient carbon sinks. The amount of forest that burns every year in wildfires is tiny compared to the amount burned for deliberate deforestation.

The greenhouse gases added by volcanic activity barely contribute enough to be measurable.
Chris

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