Anyone have a take on the protuberances coming down Saturday evening? Thermodynamic values appear to be mildly healthy in the 1700-2600 j/kg range per 18Z NAM NEST run for Saturday. STP parameters also appear to be very high as well with ranges in the 5-7 range, but here is the burning question. The upper air patterns look like the isobars are pushing down, can anyone explain what this feature is or comment on the potential threat area in Texas and Louisiana on Saturday? Satt by Terry Tyler posted Mar 8, 2018 at 5:27 PM Is this good for tornado potential? Yes or no, the upper air does not look like traditional set-up, but the STP values are high.