Hail in Natchitoches Parish, Louisiana

Quarter size hail fell in Robeline.

A northwest flow aloft was in place across the Four State Region during the morning of May 10th, developing on the east side of an upper level ridge of high pressure over the Rockies and Desert Southwest. A shortwave trough embedded in this flow regime traversed the Oklahoma/Texas Panhandle during the early morning hours, before moving into East Texas by late morning and North Louisiana during the afternoon. Diurnal heating contributed to an unstable air mass by late morning/early afternoon, with the approaching trough helping to enhance large scale forcing for the development of scattered severe thunderstorms across portions of East Texas and North Louisiana, where multiple reports of large hail and damaging winds were received. These storms eventually exited the region by late afternoon with the departure of this disturbance aloft.