Strong Tornadoes Possible This Evening in SD/ND, TVN's North Dakota Chase Last Friday!
Strong tornadoes are possible today in the Central Dakotas once again, as a decent shortwave ejects over extreme instability. Below, is a RUC model map of the forecasted EHIs at 0z (7 pm CDT) and 1 hour forecasted precipitation model. As you can see, the RUC fires a storm in very close proximity to the forecasted EHI's (a parameter used to predict tornadoes) along the ND/SD border by 7 pm. Extremely large hail is also a possibility with any storms that can initiate. Stay tuned for
live video streams here; several chasers are chasing this moderate risk setup!
TVN chased in Western and Central North Dakota on Friday, with a mission to collect more radar data. The storm pictured, above, initiated along a warm front just W/SW of Bismarck, North Dakota and moved NW much of its life. It could never fully root on the warm front and likely encountered subsidence in between two waves, one in eastern SD/ND and one in E. Montana/ W. ND and the entire storm died fairly quickly after producing a couple of funnels. We then went west, where we collected data on other tornado-warned supercells, which seemed to be just behind a massive cold pool along the MT/ND borders. All-in-all, it was a great chase, with textbook structure on the first supercell we intercepted and more radar data collected!
http://www.tornadovideos.net/component/content/article/1-latest-news/1373-strong-tornadoes-possible-this-evening-in-sdnd-tvns-north-dakota-chase-last-friday
