SPC AC 210614
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...
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.
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NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z