Stratton23 wrote:18z GFS had a massive trough taking over most of the US by around the 23rd with a ton of blocking in alaska and the arctic regions, not really much cold on the run, but definitely a setup to potentially significant cold , AI GFS the same thing, will see if the ensembles hold on this idea over the next week or so
Edit: 18z Euro Aifs came in significantly colder
My assumption is we need the blocking first with the Alaska change, it won't get cold overnight. But, that's a good sign.
The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or 









