Haven't been on the boards in a couple years. You people rock! NWS mentions the "S" word for CentTx. I''ll wait for the Thursday runs before I breakout the snow chains.
Its time to start talking about the potential for that four-letter
"S" word again. GEFS mean 850mb temps (and surface temps) continue
to trend colder Sunday, and for example MEX guidance for maxT at SAT
has cooled 22 degrees between the 00Z 1/4 and 00Z 1/6 runs, bringing
it more in line with EC guidance. Precipitation may begin Sunday
morning before sunrise but could hold off until closer to mid-
morning per the slower EC soln. While much of the area will see
mainly rain, for locations across the Hill Country, the continued
colder trend is beginning to increase confidence in some frozen
precipitation (primarily snow) being possible. GFS soundings near
Fredericksburg show the entire column below freezing for a few hours
before surface temperatures warm during the day. While some
deterministic runs have even brought snow potential as far south as
San Antonio, at this lead time it`s too far out to have the
confidence to include snow mentions there. But with EPS ensemble
probabilities for 1" accumulations now increasing to ~40% over
portions of the Hill Country, adding at least a slight chance
mention for snow to mix in is a defensible option despite GEFS
probabilities being ~20% lower. Further refinement will be needed
over the coming days, like addressing potential snowfall amounts (if
any) as well as whether it will snow at all along and east of the
northern portions of the I-35 corridor.