Merged Advanced TPW Too Low in Cloudy Areas this Afternoon

The Merged Advanced TPW is underdoing PWAT values in cloudy areas over central Oklahoma. There are discontinuities where it goes from clear to cloudy skies.

The 18z KOUN RAOB sampled 1.52″ PWATs, while the Advanced TPW is showing only around 1.00″.

Meanwhile, the All Sky LAP PWAT appears to be better representing reality, with PWATs around 1.70″

Ron Dayne