In their defense tho...MRX has to rank among one of the worst places to be assigned as a Met...with the 1 million different microclimates they have to deal with
Dug more into the NBM..its running hourly but cant download the grib files unless you have the credentials. This system is a big test for it, uses the current conditions to reanalyze pretty much all the models solutions for the current time frame, then corrects the known bias that is being shown and applies that to the blending for each hourly update.
Think the models are really struggling with the thermals, especially the southern valley. If you follow the path of the cold core as it swings thru Central MS/AL, its like they don't know how to handle it column wise once it reaches the TN/GA/NC border....hence the range is still T-10" lol.
@Holston_River_Rambler...here's the Xsec at TYS from the 12z RGEM and 3k NAM...trend the last 4 runs has to been slowly erode the finger quicker. At Lovell, the finger is almost completely gone, which is what is jumping the totals over the southern valley on some models
I dont think I've ever been as less confident about a storm that has had anywhere from 3" to 13" centered over McMinn, Monroe, Polk. Crazy evolution with this one, definitely wouldn't want to be in their shoes.
You can see how the trailing system opens up the path for this to get pulled more NW vs 0z (weakness over KY/IL/IN..wouldn't put it past turning into a cutter west of the Apps before all is said and done.
Cross sectional from 12z RGEM...Lovell vs TYS (all models showing southern valley needs less help). My question is, "Is the problem more of a downslope issue vs a true 850 warm nose surging up the valley?"
This shows how close the valley is...temp cross sectional on the low levels at TYS (from 3k NAM pretty much same across all modeling). Finger of death for snow fans..but wouldn't take much to go either way.