A mix of light sleet, snow, and freezing rain, across all of South Central Texas, mainly from from 6 pm Tonight to noon Friday.
AREA OF CONCERN...Light winter precipitation accumulation on elevated surfaces, mostly north of a line from Del Rio to San Antonio to Schulenburg. A wintry mix is expected elsewhere (Rio Grande and Coastal Plains) but we are not looking for significant accumulation at this time.
IMPACTS...Light icing from freezing rain, sleet, and snow, mainly on bridges and overpasses, and on anything else where the cold air will cool the object to the air temperature (e.g., car roofs and windshields). Roads will generally be ok since the warm ground will melt the falling precipitation. However, less traveled roads in the Hill Country and Williamson County could also see some light accumulations and icy conditions. The commute on Friday morning may be significantly impacted. Cold temperatures will be in place Tonight and Friday morning, with readings in the 20s and low 30s. The high temperatures Friday will only be in the upper 30s to lower 40s.
TIMING...some mixed precipitation could start in the Hill Country by mid afternoon, but mainly 6 pm Tonight to Noon Friday for the entire area.
DETAILS...The Arctic cold front ran a few hours late, but has now moved through South Central Texas. High temperatures Today have already occurred, and will fall through the day as the cold air keeps pouring in behind the front. A weak disturbance will move across Texas Tonight into Friday. While precipitation will be light, the forecast models indicate winter precipitation starting this afternoon in the Hill Country, and spreading southeast Tonight into Friday. Temperatures are expected to fall below freezing across all of South Central Texas before midnight Friday morning.
We expect a mix of sleet, freezing rain, and snow, with accumulation mainly across the northern half of the area...north of a line from Del Rio...to San Antonio...to Schulenburg. This best chances to see accumulations are in the Hill Country and Williamson County where we are currently forecasting up to 1 inch of accumulation of snow. Other areas should only see a dusting. Temperatures are expected to climb above freezing by Friday afternoon so if this event does occur...it should be over by midday.
You can get the latest forecasts and watches/warnings/advisories by going to the Austin-San Antonio National Weather Service website at www.weather.gov/austin