Insane temperature contrast in Russia 🇷🇺 today.

One of the largest temperature contrasts ever recorded for a single country. A staggering difference of 85°C or 153°F.

Sub -60°C is rare and has not been observed outside Greenland plateau in the Northern Hemisphere for 10 years.
Final minimum temperature still awaiting verification in Delyankir.

Thanks for the heads up on the brutal cold @NorrathDecayMTG and very important insight from @extremetemps.

This is a profound country contrast, stay tuned for more details...
The final numbers are in.

Second largest single day spread of temperature for any country on the planet.

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More from @ScottDuncanWX

6 Dec
Storm Barra blasting across the Atlantic as we speak.

Status red wind warnings have been issued for Cork, Kerry & Clare. Damaging gusts in excess of 130km/h will be possible.
Official warnings and guidance here via @MetEireann

met.ie/warnings/tomor…
A mess of warnings across the UK with snow in the mix. Not ideal for the thousands that are still without power after Storm Arwen.

Official @metoffice warnings here: metoffice.gov.uk/weather/warnin…
Read 4 tweets
2 Dec
Canada 🇨🇦 has done it again...

We just observed the hottest December day on record in British Columbia. Tying the all-time national Canadian December highest temperature.

This weather station beat its previous December record by a monstrous 8°C. Jeepers.
More on this extraordinary winter heat in this thread by @ThierryGooseBC

Am I surprised?

Not really, no. Shorts and t-shirt weather for millions right now

Read 4 tweets
29 Nov
The temperature contrast across Europe this morning was simply outrageous.

67°C difference between southern Greece 🇬🇷 and northern Sweden 🇸🇪
Astonishing overnight temperature in Greece with several weather stations reporting over 30°C

African warmth and foehn effect here. Nice summary by @extremetemps

This follows closely behind Sweden's coldest night in 40 years.

Two extremes simultaneously.

Read 5 tweets
20 Nov
This is amazing!

Humid atmosphere conditions allow us to see how air passes over an aircraft. The trailing lines are known as wingtip vortices.

🎥 Via @controladores

Lift is caused by a pressure difference across the wings.

The cloud that forms over the wing is to do with the drop in pressure on top of each wing.
Normal clouds form when there is too much water vapour for the air to hold.

Basically, when the atmosphere is unable to hold the water vapour at a certain temperature and pressure, it saturates and we see cloud.
Read 10 tweets
13 Nov
Incessant heavy rain will pile into the Pacific Northwest, USA 🇺🇸 & British Columbia, Canada 🇨🇦 in the next 72 hours due to a significant atmospheric river event.

Flooding & landslides are highly likely. The atmospheric warmth & moisture can be traced all the way to the tropics.
A strong meander in the jet stream allows Alaska to cool under Arctic air but also helps lift Tropical warmth & moisture into British Columbia & the Pacific Northwest.
Notice how the atmospheric moisture aligns and focuses on the same area. This is like nature's firehose. Extreme rain and locally very high freezing levels expected. Meteorologists call this an atmospheric river.

Some refer to this atmospheric river as 'the Pineapple Express'.
Read 9 tweets
13 Nov
Extreme temperature contrast across North America right now.

Alaska shivering with brutal early winter cold Meanwhile California sets daily heat records.
We often see extreme anomalies at this time of year...

The long nights in the Arctic are starting to build the cold while summer heat lingers in the south.

However, this is exceptional.

🔵= colder than average for time of year
🔴 = warmer than average for time of year
Some more info on the daily heat records in California

Read 4 tweets

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