Thought this update was interesting. Sounds like Tulsa thinks this could be big for the entire area
National Weather Service Tulsa OK
1004 PM CST Sat Feb 13 2021
.DISCUSSION...
Have updated snowfall amounts for tonight in areas to the
northwest of I-44, as most recent runs of the HRRR and HRW suite
have continued to focus the initial frontogenetic band of snow in
the 06-12z time frame more to the north. Mid-level radar echoes
have been gradually expanding across SW-central OK likely in
response to this increased forcing. An environment characterized
by steep lapse rates above the cold air at the sfc may be
supportive of CSI in the elevated front zone, and thus some heavy
banding of snow may occur late tonight into Sunday morning.
The overall message of the forecast remains the same tonight as a
significant winter storm is shaping up for a large part of
eastern OK and northwest AR. Dynamic upper level system located
near the Four Corners, which has produced numerous CG lightning
strikes across NM/AZ this evening, continues to move east, and
will provide a prolonged period of strong forcing over much of
the area.
North winds have begun to increase over the past couple of hours
in response to the approaching system, with gusts around 25 mph
becoming common across northeast OK. Wind chills have fallen below
-5 in parts of NE OK as a result and while this is technically
wind chill advisory criteria, this will be covered by the winter
storm warning beginning at midnight. Higher dew points
depressions seem to have cut off the lake effect snow across
eastern OK, however sfc reports indicate there is still some
ongoing in the FYV area...so have added flurries into the
forecast for the remainder of the evening. Per satellite this
appears to be mainly down wind from Beaver Lake.