Archive for 2020
It’s been quite the May for cold throughout the British Isles and Ireland thanks to dry arctic or subarctic air trapped within a dominant blocking high over ground starved of rain. Cloudless skies have been common place in recent weeks as seen in the below visible satellite image. While April as well as May has […]
Following one of the coldest opening 10 days of May in history, the Northeast US is about to skip from March to May within 72 hours. May temp anomaly so far. 90s could may it to Richmond, VA and 80s to Philadelphia and even Trenton, NJ by Friday. New York could see 80s Saturday. Then […]
While it couldn’t make an appearance during winter, it’s taken till nearly mid May for the tropospheric polar vortex to come crashing south. A final stratospheric warming event combined with stratosphere to troposphere coupling and significant height rises into Alaska led to one of the strongest May Arctic Outbreak’s on record. One of 2 pieces […]
After a non-winter, all of a sudden old man winter gets here 3 months late and doesn’t want to leave. A +AO/NAO low pressure dominated winter has abruptly flipped to a -AO/NAO high pressure dominated spring. We’ve went from 200% of normal rainfall widely back in February to just 20% of normal rain during April. […]
There’s been nothing normal about the polar vortex over the past 10 months. After being record strong throughout the past winter, producing the 4th warmest winter for the UK, 6th warmest for the US and warmest on record for Europe as a whole, the final stratospheric warming has now finally unraveled. Perhaps late due to […]
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