Looks like Tulsa finally bought in.
"As main vort max moves into northeast Oklahoma tonight, precipitation
is expected to transition to snow by late evening into the overnight
hours across northeast Oklahoma and northwest Arkansas. Snow accumulations
of 1 to 2 inches will be possible near the Interstate 44 corridor and
in the higher terrain areas of northwest Arkansas before precip shifts
east Saturday morning. Still some significant uncertainty regarding
how quickly precipitation transitions to snow tonight and overall
amounts. Also, depending on how quickly the heavier precipitation
spreads north of the front today, there is some potential for
freezing rain or freezing drizzle if temperatures can wet bulb
below freezing. A winter weather advisory may be need for portions
of northeast Oklahoma and northwest Arkansas as precip type/amounts
become more certain."
Last night they were showing 1/4th an in of snow, now it's 1-2. Confidence in how quickly the transition takes place seems low to me. That could affect amounts as well.