Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0737 PM CDT Sat Apr 22 2017 Valid 230100Z - 231200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE LOWER MS VALLEY TO NORTHWEST GA... ...SUMMARY... Isolated strong storms are possible this evening along a corridor from southern Louisiana to northwest Georgia. Gusty winds and hail are the primary threats through mid evening. ...Discussion... Large-scale mid-level height falls will spread across the central Gulf States tonight as strong 500mb speed max translates across OK into the lower MS Valley by sunrise Sunday. High-level diffluent flow should enhance upper venting for continued convection along the cold front as it advances across the remainder of LA/MS into southern AL/northwest GA late tonight. However, 00z soundings across the central Gulf States exhibit only modest instability/shear such that robust convection capable of producing gusty winds and some hail may be noted...especially this evening south of I-20. Elsewhere along the front, draped across the southern Appalachians into NC, boundary-layer cooling and weak forcing will limit convection/severe threat along this portion of the wind shift. ..Darrow.. 04/23/2017Read more
from SPC Forecast Products http://ift.tt/rxAC6Z
No comments:
Post a Comment