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A thread for weather extremes that don’t normally get reported

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  • Registered Users Posts: 1,764 ✭✭✭Bsal


    California is like a burning inferno with record breaking temperatures this weekend

    https://www.latimes.com/california/story/2020-09-05/heres-where-record-breaking-heat-is-forecast


  • Closed Accounts Posts: 40,061 ✭✭✭✭Harry Palmr


    By way of a contrast!

    The American western interior is about to receive a mighty Arctic blast. Could see a 30c fall in 24 hours as it plunges southwards.


  • Registered Users Posts: 1,764 ✭✭✭Bsal


    By way of a contrast!

    The American western interior is about to receive a mighty Arctic blast. Could see a 30c fall in 24 hours as it plunges southwards.

    33C in Denver today and the airport is forecasting snow in the morning.


  • Registered Users Posts: 5,359 ✭✭✭Charles Babbage


    Bsal wrote: »
    33C in Denver today and the airport is forecasting snow in the morning.


    Bolder 33C today and next two days total snow accumulations of 9 to 15 inches :eek:


    30-32C in 24 hours difference.
    In Ireland probably the greatest difference was 25-26 Dec 2010 which was 25C difference.


  • Registered Users Posts: 28,703 ✭✭✭✭Wanderer78


    The American western interior is about to receive a mighty Arctic blast. Could see a 30c fall in 24 hours as it plunges southwards.


    Spotted that alright, that must be really weird to experience


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  • Registered Users Posts: 6,664 ✭✭✭CelticRambler


    Wanderer78 wrote: »
    Spotted that alright, that must be really weird to experience

    It actually feels surprisingly uneventful! At least here in continental Europe. In the centre of France, we'd regularly get 25-30°C of difference between day and night in January/February. The record, IIRC, is a swing of 55°C. Last week, we had overnight lows of around 12°C for a daytime max of 30-32°C.


  • Registered Users Posts: 5,359 ✭✭✭Charles Babbage


    It actually feels surprisingly uneventful! At least here in continental Europe. In the centre of France, we'd regularly get 25-30°C of difference between day and night in January/February. The record, IIRC, is a swing of 55°C. Last week, we had overnight lows of around 12°C for a daytime max of 30-32°C.


    Yes, but +10 to -20 (say) is January is a light coat to a heavy coat type transition, 33C to 2C is a T-shirt and shorts to winter wear transition, in the middle of the day in both cases.


  • Registered Users Posts: 14,279 ✭✭✭✭M.T. Cranium


    It's a shock to the system alright. Where I live, which is near the US-Canada border midway across southern BC, we had 32 degrees C on Sunday, and then the colder air arrived Monday morning, it stalled out around 15 C all day and dropped to near freezing last night. We're going to warm back up into the low 30s by Wednesday, today looks to be around 24 C.

    The storm in Colorado has swept the cold, dry air all the way around to Nevada and Utah, now it's moving through northern Arizona. At Las Vegas the front hit at 0700h (today local time) and winds reached NNE 50 mph in gusts. After yesterday's scorching heat, today won't go up much from the morning "low" in the mid 80s F.

    The concern is that the strong winds will jump the Sierra Nevada and interact with already massive forest fires in central California and north of LA. It's a bit hard to predict the extent of the strong wind regime in California with the heat trough likely to shift 50-100 miles west. I would imagine most of the central valley will get hit by strong winds ranging from northerlies to easterlies depending on terrain. Around LA they might get alternating Santa Ana and calm periods with the sea breeze front trying to join the party at times. Some very humid air is in place over southern interior California too, dew points into the 23-25 C range being reported. It could lead to some heavy mountain thunderstorms in places.

    The strong winds blasting through the Great Basin and eastern WA state yesterday have caused blowing dust problems and accelerated some fires in those states too. Power failures were caused by branches blowing into power lines. We escaped those problems locally as we have no fires in our region this summer. There is a bad situation near Bridgeport, WA (on the Columbia River mid-state) with an evacuation of that small town ordered.

    The Colorado snow will probably be a rain-snow mix in some populated areas, certainly trending to all snow around Denver and higher elevations. A secondary low further west near Grand Junction is bringing a chilly rain to eastern Utah and western Colorado lower elevations.

    The windy cold front will probably cause havoc later today around Phoenix with blowing dust and perhaps a few storms over higher areas of central Arizona. It won't arrive for a few more hours yet there.


  • Registered Users Posts: 33,721 ✭✭✭✭RobertKK




  • Registered Users Posts: 14,279 ✭✭✭✭M.T. Cranium


    I'm sure there were fire tornadoes before the age of carbon even began. Some people don't seem to realize that huge areas of the North American forest used to burn unchecked every year, and accounts of life a century ago include the routine appearance of choking smoke clouds in the late summer and early autumn.

    In fact the term "Indian summer" comes from the observation in New England that warm, dry weather in the autumn was often accompanied by smoke which they attributed to the reputed native American practice of burning grasslands to spook bison herds for hunting. The point is that a lot of burning was a normal part of the annual experience, whether their analysis was correct or the smoke was actually from forest fires.

    In the Providence weather journal, in the hot dry summer of 1854, Caswell refers to "very smoky with much reduced visibility" several times.

    My guess is that these huge fires in 2020 and recent years are part of a cycle and of course it does not help that there are some cases of arson and human carelessness involved, but on the other hand, in past centuries, similar years would have come to their conclusion only when winter rains set in. The native population had no resources to fight fires and were totally at their mercy, having to move hundreds of miles in some cases to get out of harm's way. Our modern lifestyle keeps us more fixed to locations, and those locations are continuing to spread out into the forest boundaries as suburban and exurban living appeals to more and more people. It's great having a few big trees, wide open spaces, and nearby forest in your back yard until a forest fire comes over the ridge, then you are about where the fire can most easily accelerate forward.


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  • Registered Users Posts: 28,703 ✭✭✭✭Wanderer78


    My guess is that these huge fires in 2020 and recent years are part of a cycle and of course it does not help that there are some cases of arson and human carelessness involved, but on the other hand, in past centuries, similar years would have come to their conclusion only when winter rains set in. The native population had no resources to fight fires and were totally at their mercy, having to move hundreds of miles in some cases to get out of harm's way. Our modern lifestyle keeps us more fixed to locations, and those locations are continuing to spread out into the forest boundaries as suburban and exurban living appeals to more and more people. It's great having a few big trees, wide open spaces, and nearby forest in your back yard until a forest fire comes over the ridge, then you are about where the fire can most easily accelerate forward.


    Maybe, maybe not, we have no way of truly knowing for sure, but with the rate of deforestation that has occurred on this planet, we may also be accelerating the likelihood of these fires. trees are critical to our exitence, and to all other creatures we share this planet with, it is also understandable why people want to live amongst them, as it's an incredible way to connect with oneself and this planet, rather than man made concrete jungles


  • Registered Users Posts: 6,664 ✭✭✭CelticRambler


    Catastrophic flooding in the Var region of France (extreme south-east) this weekend. The town of Saint-Martin-Vésubie suffered a record 235mm of rain in just a few hours, but other parts of the region had in equally devasting rainfall, resulting in landslides, destruction of the bridges and roads, houses and commercial premises washed away; ten people missing including two firefighters, one person (gendarme) found alive and well this morning.

    https://www.facebook.com/SDISAlpesMaritimes/photos/pb.1664118373875190.-2207520000../2847832182170464/?type=3&theater

    https://twitter.com/marinebrenier/status/1312052359246340101

    https://twitter.com/MeteoCotedAzur/status/1312046277748764673


  • Registered Users Posts: 2,855 ✭✭✭Nabber


    Wanderer78 wrote: »
    Maybe, maybe not, we have no way of truly knowing for sure, but with the rate of deforestation that has occurred on this planet, we may also be accelerating the likelihood of these fires. trees are critical to our exitence, and to all other creatures we share this planet with, it is also understandable why people want to live amongst them, as it's an incredible way to connect with oneself and this planet, rather than man made concrete jungles

    Trees are important as a habitat for a multitude of animals.
    But for example the 'lungs of the earth' for the Amazon has been debunked. The Amazon forest has a net contribution of 0%, replacing forest with farms isn't as impactful to the planet as most would think.
    Deforestation is alarming none the less but for different reasons, but not critical to human or existence.


  • Registered Users Posts: 6,664 ✭✭✭CelticRambler


    Catastrophic flooding in the Var region of France (extreme south-east) this weekend.

    A "before" and "during" comparison from one of the places affected.
    a1ba8a6b2c42677ea23fab5804b405a2f340d17a96bd151eaa38d04a39369d1b.png

    Sadly, there were two elderly people in this house who couldn't be rescued (civil defence were on the scene) before they and the house were washed away. :(

    The river Vésubie rose by 8m in under 24hrs, and the river Var (main river of the département) rose by 5m in the same period. Total rainfall in 24hrs was between 350 and 500mm. :eek:


  • Registered Users Posts: 28,703 ✭✭✭✭Wanderer78


    Nabber wrote:
    Trees are important as a habitat for a multitude of animals. But for example the 'lungs of the earth' for the Amazon has been debunked. The Amazon forest has a net contribution of 0%, replacing forest with farms isn't as impactful to the planet as most would think. Deforestation is alarming none the less but for different reasons, but not critical to human or existence.


    Debunk by whom?


  • Registered Users Posts: 3,489 ✭✭✭Pa ElGrande


    Wanderer78 wrote: »
    Debunk by whom?


    Yadvinder Malhi, also Scott Denning
    But that’s not the whole story. Trees don’t just exhale oxygen—they also consume it in a process known as cellular respiration, where they convert the sugars they amass during the day into energy, using oxygen to power the process. So during the night when there’s no sun around for photosynthesis, they’re net absorbers of oxygen. Malhi’s research team reckons that trees inhale a little over half the oxygen they produce this way. The rest is probably used up by the countless microbes that live in the Amazon, which inhale oxygen to break down dead organic matter of the forest.

    “The net [oxygen] effect of the Amazon, or really any other biome, is around zero,” he explains.

    Because of this balance between oxygen production and consumption, modern ecosystems barely budge oxygen levels in the atmosphere. Instead, the oxygen we breathe is the legacy of phytoplankton in the ocean that have over billions of years steadily accumulated oxygen that made the atmosphere breathable, explains Scott Denning, at atmospheric scientist at Colorado State University.

    source

    Net Zero means we are paying for the destruction of our economy and society in pursuit of an unachievable and pointless policy.



  • Moderators, Science, Health & Environment Moderators Posts: 11,766 Mod ✭✭✭✭Meteorite58


    There is nothing fair when it comes to the weather.


    https://twitter.com/KOCOMichael/status/1318965466312880128?s=20


  • Moderators, Recreation & Hobbies Moderators Posts: 10,946 Mod ✭✭✭✭igCorcaigh




  • Registered Users Posts: 215 ✭✭Liberalbrehon


    Parts of southern Japan had highest rainfall in 21 years this year so far. Over 3metres of rain.


  • Registered Users Posts: 13,463 ✭✭✭✭joujoujou
    Unregistered Users


    [...] Typhoon Goni, expected to be the strongest storm to hit the Philippines this year, made landfall on Sunday morning, with weather officials predicting “catastrophic wind damage” as it roared through the country. [...] The typhoon had sustained winds of 135 miles per hour at its center and gusts of 165 miles per hour as of early Sunday, prompting the Joint Typhoon Warning Center to categorize the storm as a super typhoon. [...]


    https://twitter.com/dost_pagasa/status/1322645728213176320


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  • Closed Accounts Posts: 40,061 ✭✭✭✭Harry Palmr


    Italy has yet again suffered a massive rainfall event, this time on Sardinia



    It feels as if the Med has become a new hotspot for intense regional weather events.

    https://floodlist.com/tag/italy


  • Registered Users Posts: 33,721 ✭✭✭✭RobertKK


    Not extreme but it can be recorded here.

    https://twitter.com/MetEireann/status/1344311971106185217?s=20


  • Registered Users Posts: 6,664 ✭✭✭CelticRambler


    Oooooh - that's really cool. Proper sci-fi CGI stuff! :pac:


  • Registered Users Posts: 2,671 ✭✭✭Rougies


    NASA satellite captured it too. Looks like the clouds fell down, which is pretty much what happened.


    UGmMVOy.jpg


  • Registered Users Posts: 15,290 ✭✭✭✭Supercell


    RobertKK wrote: »

    I saw that earlier today and thought to myself that it looked like a hole punch formation, delighted to see it confirmed, never thought i'd see one myself outside of the internet.

    Have a weather station?, why not join the Ireland Weather Network - http://irelandweather.eu/



  • Registered Users Posts: 3,489 ✭✭✭Pa ElGrande


    https://twitter.com/P4Estacions/status/1346712869069615105


    Storm 'Filomena' leaves the lowest temperature ever recorded in the Iberian Peninsula: -34.1 ° C

    This week has been very cold, with frosts in much of Spain even in areas very close to the coast. The early hours of this Wednesday were marked by intense cold and snowfall. The thermometers show such low figures that the temperature at the Clot de la Llança (Alto Aneu) weather station stands out: - 34.1 degrees. It is the lowest temperature in the Iberian Peninsula since there are records.

    Net Zero means we are paying for the destruction of our economy and society in pursuit of an unachievable and pointless policy.



  • Registered Users Posts: 2,855 ✭✭✭Nabber



    Has it been verified, I read about this yesterday and they said the station was relatively new and other stations Pyrenees were not reflective.

    For those interested, the station is about 2.5km above sea level.


  • Registered Users Posts: 18,069 ✭✭✭✭fryup


    a blizzard in spain, surely that confirms climate change to the doubters???


  • Registered Users Posts: 33,721 ✭✭✭✭RobertKK


    On the flip side, Malta got a record high for January thanks to Filomena.

    https://twitter.com/severeweathereu/status/1348041885517012992?s=21


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  • Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Looking at snow depths in Japan and I noticed that North Korea seems to want to be top of Asia with their depths. Up to 400 cm (yes, 4 metres!) just within the confines of their country. And all perfectly round figures too. Again, North Korea is the best country in the world at everything it does!

    538945.png


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