The NWS has issued a frost warning for this evening.  Below freezing temperatures can damage early spring shoots.   According to the North Carolina Winegrape Growers Guide (I had found a Virginia version a few days ago but can’t find it now):

“Spring Frosts that occur after grape vines have broken bud and commenced shoot growth are not uncommon.   Frosts and kill shoots and significantly reduce the fruit crop for the year. . . ”    

It goes on to say that ” Spring Frosts are especially damaging in early budburst vinifera varieties like Chardonnay”.  

The forecasts currently call for temperatures to be right at 32 F or slightly above.  However, this forecast is for Charlottesville and it could be colder in the Vineyard regions.   

Hopefully there will not be too much damage.