The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or 
Ntxw wrote:Portastorm wrote:Not always. I have seen a slower upper level system also slow the southward progress of cold air, especially the depth of the cold air. Dynamics are not always the same.
That is true, however I was answering for this particular case. What's happening here is the cold air is oozing from the northeast, kind of a backdoor front you'd say, the slower the storm the more time there is for this to happen, only in this case. Which is why areas further northeast/east of the metroplex has the best shot this go round.
It probably will take two things to happen for y'all to get some snow/ice up there ... one, a slower track of the upper low until late Sunday or even early Monday and, two, a track which takes the low over north Texas/Red River which would cool the surface column of air and aid in the right temps for freezing precip.
Based on everything we're seeing and reading in the last 12-18 hours, it certainly is an option on the table. And hey, kudos to you Ntxw for calling it a few days ago!
These upper lows are pesky in winter and I wouldn't count too much on a forecast until it's about 24-48 hours out.
. I know the models are all over the place but how long does everyone think it will take for us to have a good idea of what will happen? I remember last years snow storms were very tricky to forecast let alone predict the impacts and accumulations until the night before.
