Area forecast discussion National Weather Service Tulsa OK 1047 am CDT Thursday may 23 2013 Discussion... showers and thunderstorms that developed over central Oklahoma earlier this morning have been making slow progress to the east and into the western portions of the tsa County Warning Area. This activity is partially the result of isentropic lift along the 305k surface and that is expected to weaken over the next several hours. Would expect the showers and thunderstorms to persist into the early afternoon before diminishing. Have and will continue to make adjustments to the grids to better reflect latest trends and model data. Have lowered maximum temperatures for today a few degrees area-wide due to the extensive cloud cover and convective activity. && Tsa watches/warnings/advisories... OK...none. Arkansas...none. && $$ Short term...10 long term....18