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Leading on from the Autumn + Winter thread. Note some of these initial events began in the crossover period from Winter - Spring. Part of this cold outbreak has moved across East Asia breaking records thus far Another significant cold anomaly part of the same episode will cross by March 9th > 10th With similar patterns to prior weeks seeing further cyclonic centres and cut off low development this has produced several huge snow events over Alpine regions.
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The Atlantic low which might bring wintry weather to southern England on Wednesday (hitting the cold Arctic air already in place) has been named Irene Meteo France Plenty of yellow wind warnings for northern Spain with rain warnings in places, also 2 amber wind warnings Rain and wind warnings for Portugal. It will then affect France and other central European countries mid-week with disruptive snowfall being warned of already
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As many more will possibly see their first snow of the winter in the coming days, I was wondering what is the heaviest you've seen snow fall ideally in the UK, but globally would also be interesting to know! For me it would have to be the 29th December 2020, just before midday here. Unfortunately it melted in around 15 minutes afterwards, but it had to be close to 6-8cm per hour! if only it lasted an hour or 2 and the temperature was a degree lower from 0.7C! VID_20201229_112610347~2.mp4
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Seems like there is no thread dedicated to this subject other than the Netweather forecast thread, which should probably remain uncluttered by NW member chat and opinion. So here we go ... with a strong low poised to move from near 50N 20W (00z 9th) across far south of England into Benelux region, and cold air entrenched over parts of Northern Ireland, northern England, limited warm advection, all signs point to a 15-30 cm snowfall potential for many parts of Ireland (north of a Galway to Louth corridor and including all of Northern Ireland), north and central Wales, north Midlands, and northwest England, Pennines and parts of northeast England also. Some parts of southern Scotland could be included, with bands of North Sea snow embedded and extending further north in the flow approaching the storm zone. Snow may be heavy at times with thunder-snow possible. Disruptions to travel seem very likely. Heaviest snow probably Thursday evening into Friday early morning hours. Winds east to northeast 50-80 km/hr could produce large drifts on exposed higher slopes in north Wales and Pennines, also near Strabane Pass in NI. Post observations, nowcasts and chat here ... and enjoy.
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Please let me know what places in Canada or Alaska with a population over 10K has at least 9cm of snow average in October I have currently found: Snag, Canada Fairbanks, Alaska Labrador city, Canada
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February 1978 was a cold and snowy month that featured one of the most intense blizzards in recorded history. The month started with temperatures close to average - westerly winds dominated until the 6th. Gales on the 1st/2nd sent ships adrift. Changes began on the 7th as winds started to blow in from the continent. Freezing fog becamee difficult to clear and temperatures started to plummet. The 9th began a four day streak of temperatures remaining below zero. The C.E.T. from the 8th to the 21st averaged -0.4. Snowfall totals during this period included 15cm across Kent from snow showers on the 9th, 20-25cm at Dundee and Edinburgh by the 12th (the heaviest snowfall there since 1955) and undrifted snowfall totals between 50-80cm in NE England/SE Scotland by the 13th. The largest totals were yet to come - the Atlantic began advancing forward on the 15th allowing weather fronts to track across southern England, instantly turning to snow as they hit the frigid air. Unusually, the cold block held the mild air at bay. It was as the block held the Atlantic low pressure systems at bay when the lowest temperatures occured. Across deep snow cover, the temperature fell to -21degC at Braemar on the 15th; -17degC was also achieved in the city of Edinburgh on the 17th. However, it would get colder. The second advancement of low pressure in the Atlantic lead to perhaps the most intense blizzards in UK history on the 18th/19th. The block allowed low pressure to undercut and draw in gale force easterly winds filled with moisture. This lead to apocalyptic blizzards across the southwest, a place usually sheltered from cold and snow. Level snow accumulated to depths of around 60cm at Dartmoor and Exmoor and 85cm at Nettlecomb in Somerset, though drifts of up to 6 metres were reported widely across Somerset & Dorset. Elsewhere, Cardiff saw 34cm with 8 metre drifts. Many lives were sadly lost in the exceptional blizzard. The coldest temperature came on the final day of the freeze; -22degC at Keith (Grampian Region) on the 20th. Also on the 20th came heavy freezing rain in the south, adding to an already wintry scene. After this the cold relented and the low pressures in the Atlantic could finally pass through. In a complete twist, the rest of February 1978 was very mild and 15degC was recorded in London on the 23rd. The rapid thaw caused a great deal of flooding. However, some remote parts of the SW remained cut off from civilization until the 24th. The rest of the month featured a mixture of mild, cloudy and foggy weather and occaisonal thunderstorms brought in on southerly winds. Overall, February 1978 has a C.E.T. of 2.8, the coldest February since 1969. A very mild final week meant the month wasn't overall that cold in the record books, similar to January 1982. The U.K. wasn't alone this month as a ferocious Nor'easter gave a historic dumping of snow across the east coast of the USA from the 5th to the 7th (similar to the recent Nor'easter across Boston, January 2022); the second in a trio cluster of extremely cold winters across NA from 1976-77 to 1978-1979; you can read about that extensively elsewhere. Share your memories of this month!
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