Only about 30 percent of California’s table grapes had been shipped with Tropical Storm Hilary hit the San Joaquin Valley on August 20th. So about 20 percent of the remaining 70 percent of the grapes have been affected
The storm crossed Baja California, and also dropped rain in Sonora, en route to California.
Pandol Bros., Inc., of Delano, CA reports about 20% of the remaining California grape crop has been damaged. About 25-30% of the total fresh California table grape harvest was complete. So, of the remaining 70%, 20% was harmed by Hilary.
It was organic and white varieties that were most damaged. The later season red and black varieties have thicker skins and weathered the storm in better shape. So grape shipments from the middle part of the season, which is occurring now, will be affected most.
The 20% loss will be felt immediately, running to the middle of November. The crop should then be normal until it ends in late November.