SPC Feb 21, 2018 0700 UTC Day 2 Convective Outlook

By Newsroom America Feeds at 21 Feb 2018

SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1214 AM CST Wed Feb 21 2018 Valid 221200Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Showers and a few thunderstorms are expected from Texas through a portion of the Tennessee and Ohio Valleys Thursday. ...Texas into the lower Mississippi, Tennessee and Ohio Valleys... Upper pattern will remain characterized by a synoptic trough over the western half of the U.S. Thursday. A low-amplitude shortwave trough initially over the southern Rockies will eject northeast through the Central Plains and middle MS Valley regions and undergo deamplification in the process. Quasi-stationary front will reside from the Middle Atlantic through the TN and lower MS Valleys to south TX Thursday morning. This boundary may retreat some distance northwest through the period. An ana-frontal southwesterly flow regime will persist with episodes of showers and some thunderstorms occurring, primarily within zone of isentropic ascent on the cool side of the front. The elevated nature of the convection and weak instability should preclude a threat for severe storms. ..Dial.. 02/21/2018 Read more



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