SPC Feb 21, 2018 0830 UTC Day 3 Severe Thunderstorm Outlook

By Newsroom America Feeds at 21 Feb 2018

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0145 AM CST Wed Feb 21 2018 Valid 231200Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Showers and a few thunderstorms are expected from a portion of the Southern Plains to the lower and middle Mississippi and Ohio Valley regions Friday. ...Discussion... Upper pattern will remain characterized by a synoptic trough over the western U.S. and a downstream low-amplitude ridge in the east. Weak vorticity maxima embedded within the broad southwesterly flow regime will interact with baroclinic zone that should initially extend from south TX into the OH Valley. Thunderstorms will likely remain confined to zone of isentropic ascent and weak instability on cool side of this front. Deep convection will struggle to develop in warm sector due to weak forcing and a very marginal thermodynamic environment including warming temperatures aloft. ..Dial.. 02/21/2018 Read more



[D] [Digg] [FB] [R] [SU] [Tweet] [G]