tag:blogger.com,1999:blog-6168620747792092240.post2174171318119623233..comments2024-03-27T15:09:59.039-06:00Comments on Wasatch Weather Weenies: A Look at Utah Cold PoolsJim Shttp://www.blogger.com/profile/15799757451626876963noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-6168620747792092240.post-18009449072690674942012-12-22T18:00:36.772-07:002012-12-22T18:00:36.772-07:00I know that I have posted a lot on this topic, but...I know that I have posted a lot on this topic, but today was an excellent day to observe the structure of the remaining cold pool over the Salt Lake Basin. Driving up along I-15 and I-84 there was not a lot else to do. Areas on the eastern side of the basin, along the I-15 corridor from SLC to Brigham City, were mixed out right down to lake level early this afternoon. The cold pool was visible as a distinct hazy layer in the sun, starting as a very shallow wedge just west of SLC and gradually increasing in depth to the west and north. It reached at least the 6,000 foot level on the opposite side of the basin. There appeared to be some large wave-like features that barely reached the cold pool's LCL in the distant western portion of the basin (perhaps as high as the 8,000 foot level based on dew point obs), and briefly a few tiny cumulus as well near the Raft River Mountains in far northwest Utah. This may help to explain why some areas such as Wendover are still so cold, and why some of these valley areas can be quite snowy in warm sector storm periods which SLC usually is not. Davidhttps://www.blogger.com/profile/02814313368731066590noreply@blogger.comtag:blogger.com,1999:blog-6168620747792092240.post-74730930632118515152012-12-21T23:39:56.425-07:002012-12-21T23:39:56.425-07:00I heard the wind suddenly pick up in a serious way...I heard the wind suddenly pick up in a serious way here at my house this evening, and looking at Mesowest I see that Salt Lake Valley has mixed out down to about 4500 feet, probably the best mixing of any lower valley area in the state. A couple of sites in Sandy and Draper have spiked to between 40 and 50 degrees F, if the data are correct. Most of western Utah remains inverted to between 5000 and 6000 feet judging from Mesowest stations, while eastern Utah seems to have a massive cold pool up to 8,000 feet or higher, locked in place by the terrain of the Uintas and Wasatch. The NAM even shows a large surface pressure gradient across the Wasatch Range with the cold air banked up against the eastern side.Davidhttps://www.blogger.com/profile/02814313368731066590noreply@blogger.com