TornadoVideos.net

Posted At: July 18, 2008 @ 3:34 PM

Posted By: Reed Timmer

As a shortwave trough rotates through Alberta, supercells have developed along a cold front in Southwest Saskatchewan this afternoon.  Upper-level flow is very marginal for the maintenance of rotating updrafts, but very high CAPE values of 3000+ J/kg could compensate.  A 25-30 knot low-level jet is definitely supportive of low-level rotation, so I would not be surprised if a few tornadoes are reported from these storms.  Shown below is a radar loop beginning just before 20z from SW SK...Stay tuned for updates as this severe weather situation unfolds!