Eastern pacific oscillation is a variation of the atmospheric flow across the eastern pacific.
Here is the epo index pattern in its +phase for h5 and surface temps (negative would be the opposite of map)
When in the + phase mild air flows onto the west coast and as it crosses the Rocky Mountains it dries out and becomes temperate and sinks. In the east we would rather the epo be negative, as would be the opposite of the above +phase depiction. A ridge would be in place over th
Dewpoints are still rather high across the northern areas so I wouldnt be surprised if areas start off as some rain before the transition occurs but the primary SLP is looking to be reaching to the coast more so recently probably pop a LP by morning time which should help draw down the colder air into many areas. AS MD stated definitely elevation dependent this go around. Honestly really depends on precip rates what will happen in many areas. If it goes band band band type of deal it will be int
925 low is in a good spot. BIG thermal gradient over NJ and the Atl
850 is improving, but just doesn't seem to be much cold air at this level yet. It is getting colder over PA and expanding out though.
Only one area of <32f for now (happens to be where my in-laws are by Belleayre). This has worsened through the day. Is expected to expand out over the next 6 hrs
Belleayre web cam showing 32.4f with either rain or nothing.