A few lightning images from the evening of July 23rd. These were captured in Northwest Oklahoma.
Upper: A strong short wave trough will be moving southeastward out of Canada and across the Dakota’s on Thursday. This wave is expected to carve out a fairly deep low over the Western Great Lakes which will move slowly eastward through the weekend. High pressure will remain over the Western U.S., and it will weaken some over the weekend. Weak short wave troughs embedded in northwest flow will move across the state through Sunday. The stronger waves will be impacting the state late Thursday and late Sunday.
Surface: Low pressure will deepen over the Oklahoma Panhandle Thursday. This low will move across the state on Friday with its associated cold front clearing the state by late in the day. A weak high pressure ridge will settle into the state on Saturday. Deep low pressure is expected to organize over far SW Kansas on Sunday with the surface front lifting back north of the state.
Impacts: The weather pattern will be unusually active for July through the weekend. Deepening low pressure, an unstable atmosphere and lift from an approaching short wave trough will result in widespread showers and thunderstorms forming from W Kansas to the Texas Panhandle by Thursday afternoon. Organized severe storms are expected to move southeastward through W Oklahoma during the late evening, and across C and E Oklahoma during the overnight hours. Damaging winds will be the main threat, but some large hail is also possible. Storms will likely continue into the afternoon hours over far E Oklahoma. Behind the low/front, winds will become brisk out of the northeast bringing below normal temperatures across the state. Saturday and Sunday morning will be mild across Oklahoma. By Sunday afternoon and evening, more showers and thunderstorms will form to the northwest of the state. These storms will once again have the potential to produce damaging winds as they spread southeastward across Oklahoma.
Thursday morning: 69
Friday morning: 65 / Showers and thunderstorms
Saturday morning: 66
Sunday morning: 67