A major winter storm is shaping up for the South, but the greatest chance for ice/sleet and snow stays far north of the metro Houston area. The graphic above depicts what the situation looks like Wednesday morning. A cold rain is developing in the Hill Country, part of an upper-level disturbance that will spread the white stuff into the Dallas Metroplex for the second time this week. There is a chance, as cold air hangs on near the ground that some of the rain could briefly mix with some sleet or freeze up on elevated bridges and overpasses. However, this will most likely be a threat for places like Huntsville. Headed to Dallas along I-45 could be quite a challenge, however, so take note of that.
Once the rain moves out, temperatures will moderate a bit, out of the chilly 30s to the low to mid 50s as skies brighten a bit by the afternoon. By Thursday, skies should be mostly sunny, but a north wind keeps it cool in the morning and in the upper 50s by the afternoon. Clouds quickly spread back in Thursday night as fans begin heading down to the BBQ cookoff. Trail riders will arrive under mostly cloudy skies Friday with a slight chance of some light rain. Right now, the parade looks cloudy and chilly - the way it usually is.
The Norman Number for Wednesday, February 25 in Houston is 4 as the day starts wet: