.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
Confidence in the long term period remains low given significant
model differences due to fast zonal flow with resulting timing
issues with central and eastern broad trough late in the period.
There is potential for wintry precipitation over the weekend but
details are limited at this time. Have put higher stock in the
12Z ECMWF as the GFS is more dependent upon the southern impulse
which has potential to get sheared out. Added a slight chance of
mixed precipitation late Friday night into early Saturday as the
ECMWF develops an area of surface low pressure along the western
Gulf and shifts it northeastward. The ECMWF shows the moisture
shifting east by 12Z Saturday. The 12Z GFS brings the moisture in
later on Saturday and keeps the moisture around into Sunday.
Confidence is high for below normal temperatures late in the
period.