tag:blogger.com,1999:blog-6168620747792092240.post8659020233163135950..comments2024-03-27T15:09:59.039-06:00Comments on Wasatch Weather Weenies: The 20/20 "rule"Jim Shttp://www.blogger.com/profile/15799757451626876963noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-6168620747792092240.post-15641464051933121332010-11-19T11:57:08.676-07:002010-11-19T11:57:08.676-07:00The 84-hr NAM forecast from the 12Z run is now sho...The 84-hr NAM forecast from the 12Z run is now showing very cold air (-24C) at 700 mb in Washington in pretty good agreement with the 12Z GFS run.Adam Varblehttps://www.blogger.com/profile/14991968453822376063noreply@blogger.comtag:blogger.com,1999:blog-6168620747792092240.post-59637015495347176302010-11-18T11:39:55.852-07:002010-11-18T11:39:55.852-07:00Curious. One has to wonder if that NAM being warm...Curious. One has to wonder if that NAM being warmer simply reflects a difference in the large-scale forecast, or if the better terrain representation in the NAM is leading to a slower intrusion of cold air consistent with my speculation in the original post.Jim Shttps://www.blogger.com/profile/15799757451626876963noreply@blogger.comtag:blogger.com,1999:blog-6168620747792092240.post-7237335715465333212010-11-18T11:34:02.529-07:002010-11-18T11:34:02.529-07:00There is substantial disagreement between the GFS ...There is substantial disagreement between the GFS and NAM in the 84-hr forecast with the NAM having the cold air farther north. If you look around the Washington-B.C. border, the NAM is ~4C warmer. It will be interesting to see where the cold air has made it to and how cold it is in a few days.Adam Varblehttps://www.blogger.com/profile/14991968453822376063noreply@blogger.com