Will,
Your recollection of the AVN and ETA runs leading up to that storm within 96/60hrs respectively line up well with the data I got to look at for my case study on the storm I did about a year ago. Interesting to hear how the other global models performed though as I did not get to examine that data.
Looking at the gempak images i generated...
3/3/01 00z ETA
-48hr: 996mb over se NC, .5-.75 qpf across DC to Baltimore, .25 up to NYC
-60hr: 984mb well east of Delmarva, HECS ongoing Philly to NYC right to the coast with 1.5 qpf max over se NJ, another .5-.75 for DC-Baltimore
3/3/01 12z ETA
-36hr: 992mb over western NC, 996mb extention to the coast, .5-.75+ blob now from central Kentucky through to Garrett county Maryland, nw of dc-bmore
-48hr: 988mb over Salsbury MD, .75-1.00" from LI across all of northern NJ back to central PA down to nw DC/Bmore suburbs with those cities right on the .75 line. 850 0c line now inland across se NJ with only .25 qpf for them. Big nw shift.
-60hr: 984mb east of NJ, SNE getting blasted, the CCB extending south across with .5-.75 across northern NJ down eastern PA, dryslot along NYC and the coast
3/4/01 00z ETA
-24hr: 1000mb over western NC inverted extensions towards eastern NC and north into Ohio Valley. .5 qpf blob from philly back west to Ohio Valley, DC.Bmore on the fringe and also with the 850 0c line over them.
-36hr: 992mb over Salsbury, 850 0c line northwest of DC-Philly ands just south of NYC now. But qpf max now located over State College PA, with .5 extending east to northween NJ/NYC
-48hr: 988mb east of NJ , New England back into upstate NY now getting blasted with only .25-.75 NYC to Philly. 850 0c line across Cape Cod
3/4/01 12z ETA
-12hr: 1000mb over western NC, qpf max across western PA, .5-.75 across DC/Bmore to Philly, 850 0c line north of these cities
-24hr: broad 996mb from eastern NC to Delmarva, qpf max central PA up to Albany, all of NJ less then .5 qpf, less then .25 qpf Philly-DC, 850 line NYC to northwest of Philly/DC
-36hr: 984mb east of NJ, but dry area less than .25 over eastern NJ/NYC, New England through uopstate NY south to nw PA get heavier qpf
3/5/01 00z ETA
-12hr: broad 996mb on Delmarva, 850 line across the big cities with less than .25 qpf for everybody,heavy snow central PA through Binghampton/Albany
-24hr: 984mb just south of LI, southern New England back to upstate NY getting blasted
-36hr: 980mb along southern NE coast, epic hit for Boston north into SE Maine back to NH. SE Maine is suddenly forecasted to get 30" of snow.
Note how the surface low was almost 4mb weaker for an equivalent timestamp on each consecutive model run. It was result of the 500mb interaction between southern shortwave and northern monster bowling ball rotating down from Canada phasing later with every consecutive model run. This also caused the max precip shield to shift northwest towards the stronger northern stream wave that had better forcing associated with it