Archive for May, 2020
It’s been a May of stark rainfall and temperature contrasts. Thanks to the presence of an Atlantic weather front, heavy and persistent rain fell widely across Northwest Scotland with 141mm of rain fell within 48 hours at Achngart in Glen Shiel. In contrast, Benson, Oxfordshire has seen NO RAIN this month due to persistent high […]
Welcome to my 10th annual European summer forecast. As always, when compiling this forecast for the upcoming June-August period there are multiple factors which have been taken into consideration which could influence the summer pattern. These include global and regional sea surface temperature anomalies, the current and projected ENSO state, the mild, wet winter followed […]
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. […]
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