Having reached out to all its members requesting a status report about the condition of their business and operating status, NVV said it had heard from more than a 100 but were yet to hear from some in the most vulnerable areas of the valley, including along the Silverado Trail, in Calistoga and in the Mt. Veeder/Partrick Road/Henry Road areas.
"We haven't been able to go up and assess the vine damage", said Katie Bundschu, vice president of sales.
Melted and blackened wine bottles littered the ruined Signorello Estate winery in Napa Valley, but its vineyard looked untouched by flames.
Gundlach Bundschu Winery - Sonoma County The winery and structures "are all in tact", Bundschu said, thanks to firefighters who beat back flames that licked the property's perimeter.
A century-old redwood barn and her grandmother's 1919 home were spared.
She was eager to dispel reports that the winery had been destroyed, as was Nicholson Ranch winery, also in Sonoma County, which posted on Facebook that news of its demise was premature. "We have some damage to fix", it said. "We are cleaning up and hoping to have the power back on this week", it said.
Even wineries that were destroyed may survive.
She said the estate's 2015 reds and 2016 whites were stored off-site.
Frey Vineyards Winery -Mendocino County The family-owned organic winery "has burned down", Nathan Frey of Frey Vineyards confirmed.
She was optimistic that the fires will not affect the wines to come out of this year's harvest.
The industry body - the voice for Californian wine representing more than 1,000 wineries and affiliated businesses from the wine regions across the state, said smoke taint issues were likely to be "minimal" due to harvest "nearly completed".
"It's heartbreaking", she said, "It's tough to see these places you've seen your whole life on fire".
Buildings damaged, destroyed by North Bay wildfires "It was attractive, it really was", said Ray Signorello, who spent thirty years making wine at his estate winery in Napa.
Treasury owns and operates about 3750 planted hectares of vineyards in the U.S., including Sonoma County and Napa Valley.
"At this stage, there is limited damage to TWE's infrastructures and sites, however the fires are ongoing, and TWE still has limited access to all of its different assets", the company said in a statement to the ASX.
He said the good news is that most of the valley had picked 90 percent of the crop for 2017.
Treasury said its focus was ensuring that all employees were safe.
Both Darioush and Stag's Leap had suffered "significant damage" - with both having lost some buildings, while Signorelli has been confirmed by the Wine Institute of California as one of "several wineries" to have been completely destroyed during the fires across prime wine-producing areas in Napa, Sonoma and Yuba.