California’s Wine Supply Drops, Lowest Haul in 30 Years

lest: ~하지 않도록, ~할까 봐
You might want to put down that glass of wine for this next story, or hold on to it lest you spill a drop.

broadly: 대략적으로
What does this report say more broadly?

vineyard: 포도원, 포도밭
downturn: (매출 등의) 하락세, 감소
And we saw a shocking sight when you reported how grape growers are actually ripping up the vineyards as a result of the downturn in the wine industry?

analyst: 분석가 
viable: 독자 생존이 가능한
The analysts say they need to go in order for the industry here to be viable.

retaliatory: 보복성의
So retaliatory tariffs from countries hitting back at the US could put a dent in the amount of money that the wine industry can expect to make.