Near Term [Through Tonight]...
The SREF and locally-derived CAM probabilities of less than 1SM
visibility later tonight over the western half of our area are quite
Certainly, there is increasing low-level moisture as winds in the lowest 1km AGL have veered to a more S/SE direction over the past 12-24 hours.
However, increasing mid-high level cloud cover (evident on IR satellite) may limit fog development overnight.
The 00z TAE sounding showed a fairly moist layer above 10,000 feet, with similar soundings at many surrounding locations. Therefore there is not much reason to think that the clouds currently advecting into the area would dissipate.
Despite this, we have continued to give some weight to the probabilistic fog guidance and will maintain patchy fog wording over all of our land area.
Clearing beyond what is currently suggested by satellite would support more widespread fog development.
There is still some chance of that occurring, but it does not appear to be the most likely scenario at this time.