Simon Lee @simonleewx.com · Jun 9

While the climatological probability of the Pacific Trough regime is smallest in summer (~20%), current subseasonal ensemble forecasts suggest a notable and persistent suppressed likelihood. An example of more confidence in what the regime *won't* be, than what it *will* be?

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Simon Lee · Jun 9

The Greenland High regime has become more frequent and persistent in recent summers, while there has been a decrease in the PT regime frequency (doi.org/10.1029/2025...) – will this become another GH dominant summer, or just a brief June blip?