Driving through Napa and Sonoma, the land still bears the scars of 2020. The wildfires that raged through the region have left a long-lasting mark, whether it’s lengthy reconstruction efforts or the stark, charred tree trunks that cover the mountains. But it’s more than that. To an outsider, the fires feel intangible, terrifying yet somehow conceptual. Talking to those that lived through them, however, makes you instantly realise quite how petrifying that season was. The trauma of those flames is still smouldering away.  In 2017, fires hit Northern California on 8th October, however most producers had already harvested. Indeed, the fire even crossed the Kistler property, but their vines helped act as a firebreak. Two years later the Kincade fire swept through Sonoma County at the end of October. But in 2020, the first fires arrived earlier. The LNU Lightning Complex started with what is known as the Hennessey fire on 17th August. Sparked by lightning after thunderstorms, the complex was a weave of 250 different fires that collectively raged through almost 150,000 hectares of the region. The damage was enormous: 1,491 buildings were destroyed and six people lost their lives. While the fire did diminish in size, it wasn’t entirely extinguished until 2nd October, almost a month and a half after it started.  Before the Lightning Complex had fully subsided, the Glass Fire attacked. The blaze started on 27th September, east of St Helena near the Silverado Trail, spreading north to Calistoga and then south and west, towards Santa Rosa. It burned until 20th October, encompassing over 27,000 hectares and taking over 1,500 buildings with it, including numerous wineries. It cut through Eisele Vineyard, across 90 acres of hillside and forcing them to rip up 1,000 vines. Fortunately they’d already picked all their fruit (finishing their harvest three days before the fire broke out, on 24th September). And this was all in the midst of Covid-19.  Wildfires aren’t new in Northern California, but they’re certainly more prevalent than ever before. Indeed, as Cory Empting – Director of Winegrowing at Promontory, Harlan and Bond – tells me, the region’s indigenous people, the Wappo, used to describe autumn as “smoky mountains”.  Paul Hobbs – who has been making wine in “the Valley” (as the locals would say) since the late 1970s – remembers a fire in the 1980s that burned its way along the Silverado Trail. “All it took was a gust of wind,” he says – and one flame turned into something uncontrollable in the blink of an eye. He remembers climbing up on a roof to see the sobering effects of the fire.  Perhaps partly due to this early exposure, fires have always been at the forefront of his mind when picking a site – avoiding rugged, dry areas like Diamond Mountain or Calistoga. And he is exacting with forest management of the sites he works – even on our wander around his Goldrock Estate vineyard, he notices some saplings that are troubling him, and calls over his vineyard manager to take a look, conscious to reduce the risk as much as possible. And he’s deservedly cautious. The 2017 vintage was his first working with Cleary Estate out in Freestone-Occidental, and he paid almost $2 million for fruit that he couldn’t use. The fire itself is one challenge, however vines are natural firebreaks so don’t tend to suffer much direct damage (although the heat from a blaze can sometimes scorch vines). The real threat, however, is in the air – smoke. But the science of smoke taint is complex, and poorly understood. Producers can send samples to laboratories to be tested for the compounds responsible for the taint (guaiacol and 4-methylguaiacol) but the exact level of perception isn’t known. These compounds also naturally occur in some varieties, eg Syrah, and come from oak barrels (in particular the toasting process).  Of course the impact of smoke is dependent on proximity to the fire, the intensity of the smoke, elevation and the wind. Hobbs explained how in 2020 much of the smoke from the Glass Fire stayed north for several days, but then the wind shifted and sent it south to the Bay Area. As smoke travels, and ages, the volatile compounds also degrade, so there is also a significant difference between the impact of “fresh” smoke, versus what Hobbs describes as “atmospheric” smoke. The latter may look bad, but it’s unlikely to hold significant taint, whereas if you’ve got fresh smoke, it’s “game over”.   Lots of producers do micro-ferments to look for smoke taint, testing to see if it’s worth the expense of picking the fruit and making the wine – however that’s also not a sure-fire way to know if you have smoke taint. The nature of these compounds means that they can lurk, undetectable in a wine, and emerge in bottle as hydrolysis occurs. “That’s why it’s so insidious,” Hobbs says.  If you’ve got smoke-tainted fruit, the options are limited. The compounds are concentrated in the skins, so the aim is generally to minimise skin contact. Indeed, some producers made rosé in 2020, having picked earlier, with higher acidity than normal. Otherwise you can use reverse osmosis or spinning cone (both expensive processes that are used for de-alcoholisation), or carbon fining – or a combination of all of the above – to try and strip out the smoky flavour. The result, as Mark De Vere MW at Robert Mondavi said of trials they’d done, it generally didn’t work, but if it did, “It took so much else out.” (Robert Mondavi ended up making almost no 2020 wine.)  *  Read anything about 2020 and there is a cacophony of opinion. “Everyone handled the vintage differently,” Cate Kistler of Occidental told me. They picked on 18th August, not in response to the fire, but because that was when the first fruit was ripe. They didn’t do any micro-ferments or send samples to labs (“We’re not data-crunching people,” Kistler says). The cost of picking was, for them, “a drop in the bucket” in comparison to farming the vineyards the rest of the year, so they tried to do what they could.  “It was going to be either Occidental, or nothing,” she said with a shrug. They took their time, committing to making every decision as if it was a normal year, finishing on 6th September just as the Labor Day heatwave hit. They didn’t use everything they picked, but they made all five of their single-vineyard wines – and the 2020s we tasted are glorious.   Some, like Colgin, didn’t make any wine at all, while many producers made around 40% less (such as Williams Selyem and Peter Michael). Many of the 2020s that will be released were picked before the fires struck. Cathy Corison had all her fruit safely in the winery more than two weeks before the Glass Fire hit, but the challenge was to keep the smoke out of the winery. She bought industrial grade air filters to shield her ferments. “They’re beautiful,” she says with a quietly proud smile.  At Dalla Valle, Maya Dalla Valle doesn’t pretend that it was an easy year, but she’s pleased with the wines they made (all with fruit picked before the Glass Fire). As ever, these are wines that speak of their year – which wasn’t just the fires, but a hot, dry year that (along with a block that was being re-grafted) cut their crop to a mere 2,700 cases in total. At Dominus, they did micro-ferments after the Lightning complex, and had picked their last row of fruit on the morning the Glass Fire broke out.  Steve Matthiasson – the leading viticulturalist who also has his eponymous label with his wife Jill – told me how it was set to be “an epic season” before the fires hit. He highlighted how the smoke meant there was less UV light reaching the grapes, and that meant the fruit wasn’t as phenolically ripe. They pick early, so had started harvest 10 days before the Glass Fire broke out. The Cabernet Sauvignon in their Phoenix vineyard was still out, but they managed to pick it the morning after the fire broke out, before the smoke was able to take effect.  Most who picked early are in agreement that the hot, dry conditions were in their favour. Promontory saw only eight inches of rain, versus the 30 of a normal year. But that hydric stress helped them – it meant the crop was small and the vines shifted to ripening the fruit earlier, so even though they picked on 22nd August they had no pyrazines. As Will Harlan says, in some ways, “The stars aligned”.  The 2017 vintage might have prompted people to start thinking about climate change, but 2020 was a real wake-up call for the region. It prompted Martin Reyes MW to try and create a community around climate action. Eventually, working alongside Anna Brittain, he founded Napa RISE (standing for Resilience Innovation Sustainability Empowerment), a climate and wine symposium that first took place in 2022 (with the 2023 symposium currently underway). It’s early days, but they’re “trying to build into the DNA [of Napa RISE] this notion of action”. He’s keen to avoid a conference focused on discussing concepts, but an industry convention that drives change.  One part of that conversation is inevitably fire – and a session last week focused on forestry management. “The relationship with fire we have is complicated – but it can be a healthy relationship,” Reyes tells me.   Controlled burning has long been a part of life for indigenous peoples – both in North America and Australia, where wildfires have now become a threat. In the US, controlled burning was officially banned in 1911 when the Weeks Act was introduced, but California is gradually realising the need for its reintroduction.  “Agroforestry was happening before conservation took it off the table,” Empting (of Domain W. Harlan) tells me. He talks about how when the previously evicted Miwok people were allowed to return to Yosemite, they were horrified by what they saw – where “conservation” had destroyed the ecosystems. For native peoples, seasonal work like controlled burns was a way of life – seen as their responsibility to the land. But it was a responsibility that colonialism robbed from them, and didn’t take on.  At the Pepperwood Preserve, native peoples do controlled burns. Empting visited to explore the practice and see if it’s something they could take up as part of their stewardship of the land. The challenge today is the paperwork – and politics. Permits are difficult to obtain, the fire department is reluctant and has to be involved, and then there are the neighbours to contend with.  Hobbs highlights that it’s not just that there aren’t enough controlled burns, but that manmade structures have taken over swathes of land – and they burn hotter, leading fires to rage in less predictable ways.  Of course, as with 2017, the 2020s are already being marred by rumour and reputation of a smoke-tainted year. The reality is so much more complex – and, although I haven’t tasted enough to make pronouncements on the vintage, there are some brilliant wines. Of course you’ll need to choose carefully, but for top producers there is nothing to be gained by releasing wine that is anything less than flawless.  While the fires have left scars, the land’s capacity for renewal is remarkable – with vibrant vegetation flourishing in amongst the scorched trees. The 2020 vintage wasn’t the first to see such challenges and it won’t be the last. The soils can recover, and so can the people, but a sustainable way to manage these threats is essential to long-term survival. Read more about California or browse all California listings

Wildfires have become a yearly occurrence for Napa and Sonoma – but what is their impact, and how can producers handle the effects? Sophie Thorpe spoke to some of Northern California’s leading producers to investigate the issue

Talking to Napa and Sonoma’s top producers about wildfires and the 2020 vintage – Paul Hobbs, Harlan, Kistler, Occidental, Promontory, Mondavi and more

Wildfires and the 2020 vintage in California

The way the wind blows

The 2020 vintage in California is not one that the state’s natives are likely to forget. Wildfires ravaged the region, and the wines – now being released – are being tainted just by the idea of the smoke that those fires produced. But there is much more to be said about the year – which was also harvested and made in the midst of the covid pandemic, only adding to the immense stress of the season.  The winter was relatively warm and dry, with cool weather at flowering, a mild spring and then a hot, dry summer, although there continued to be a significant diurnal shift – perfect for ripening grapes, retaining freshness and developing aromatics. The heat struck just as producers like Cathy Corison were picking, and – unlike in 2018 or 2019 when the harvest was long – winemakers mostly looked to get the fruit in as quickly as possible. Almost everyone agrees that 2020 was set to be a fantastic vintage before the fires – with small, thick-skinned berries that had great promise. As Steve Matthiasson told us, “It was going to be an epic season.”  It’s important to be aware of the key dates for the fires. The LNU Lightning Complex started on 17th August, however it was the Glass Fire that posed the most significant threat to Napa, with that second blaze sparked on 27th September near the Silverado Trail, east of St Helena.  There are producers that chose to make no wine in 2020 (including Colgin, Joseph Phelps and Shafer), producers who made all their wines, and producers who made a reduced range. Insurance was a challenge. Those who had crop insurance weren’t able to claim if they picked any fruit – so many didn’t take the risk of harvesting what could have been flawless fruit, but also could have been tainted, leaving growers in the lurch, while those that farm their own vineyards were much more likely to give it a go. Some producers were able to share the financial burden with growers, but that wasn’t a viable choice for everyone.  Many producers frantically tested for the phenolic compounds responsible for smoke taint, but the local laboratories couldn’t handle the influx, with tests taking weeks. Some resorted to sending samples to as far away as Australia, while others were fortunate enough to be able to test in house. Mike and Leah Smith of Myriad Cellars, for example, tested all their fruit twice, sending it to Canada, to guarantee there were no free or bound phenols that could taint the wine. Togni reportedly tested their wines, but – having received the official all-clear and bottled the wines – decided not to release them as they weren’t quite convinced.  Micro-ferments were another option to help producers decide whether or not to pick, in theory testing to see if the smoke taint emerged once the fruit was fermented. The nature, however, of the compounds responsible for the taint means that they can emerge in bottle rather than immediately, meaning this offered no guarantees. There were so many complex factors at play, reputational and financial, as well as practical, that made the year a quagmire for producers to navigate. But it doesn’t mean the year should be written off entirely by wine lovers – we’ve tasted some beautiful wines from the vintage that are more than worthy of your attention.  Producers are generally divided by those who picked before and after the Glass Fire – and those who picked before that fateful date in Napa had no issues with smoke taint. There are many factors when it comes to smoke taint (covered more extensively here), including the distance from the fire and the direction of the wind, making it an inexact science. As Steve Matthiasson flagged, however, there was a challenge with ripening in 2020 – with the haze from fires reducing the light level and meaning some grapes weren’t necessarily as phenolically ripe as normal. This, combined with the fact that smoke taint compounds are held in the skins, means that cautious producers tended towards lighter extraction, and in a handful of instances producers even made rosé instead of red wine.  The hot, dry growing season meant that harvest dates were naturally set to be early, but producers who already tend to pick on the earlier side were particularly favoured. Corison had all her fruit in two and a half weeks before the Glass Fire. Her challenge was to ensure smoke didn’t get into the winery, tainting the ferments rather than fruit on the vine. She installed two industrial-grade air filters to keep the smoke out and the resulting wines are “beautiful”. The key for her was to pick as fast as she could, but the ripening season was “almost perfect”, although yields are down around 25% because of the hot conditions.  Maya Dalla Valle is another producer who made a full vintage – one she’s proud of despite it being the most stressful she’s ever produced. Their team picked in the first week of September. They washed the grapes – something that some producers do as standard (eg Dominus) – just in case there was any ash that had drifted from the first fire, using two vibrating sorting tables to shake off the excess water before it went into tank. They also chose to use a little less new oak at first, but after the first racking upped the proportions.  At Dominus, the team picked between 2nd and 27th September, with yields 40% lower than normal due to the heat and drought. They found extra selection was required with shrivelled berries from the dramatic heat spikes seen during the season. Robert Mondavi, however, only managed to make the early-picked whites and Pinot Noir from their more coastal sites, with no Cabernet from 2020.   The conditions forced the team at Promontory to pick early, and while they were already pulling back on harvest dates, they feel the 2020 season was a nudge they needed – a risk that has more than paid off with the stunning wine they produced. For Will Harlan and Cory Empting, the dry start to the season meant the vines and cropload were small, allowing the fruit to ripen sufficiently in the compact season. For them, the year is closest to 2011 or 1998, a year that will likely be consistently underrated and overperform. As vines act as a natural firebreak, few vineyards suffered any long-term damage – however Eisele is an exception, with 90 acres of hillside lost, and 1,000 vines that will need replanting. Fortunately, all their fruit was picked before the fire raged through the property.   With so much unknown about smoke taint, it’s unsurprising that critics seem to be cautious about the year. Reviews and scores are mixed. Vinous’s Antonio Galloni is quick to applaud the efforts producers made in the remarkable year, but feels that some of the wines aren’t very good. He notes, as Steve Matthiasson did, that with nature forcing some producers’ hands with harvest dates, some wines have coarse tannins, however he finds less pronounced smoke taint than in the 2017s.  Jeb Dunnuck advises that it is a year to approach “with extreme caution”, given the unpredictability of smoke taint, however states that “there are some terrific wines” – highlighting those from Bond, Carter, Crocker & Starr, Dalla Valle, Harlan, Paul Hobbs and Spottswoode, to name a few.   Lisa Perrotti-Brown MW (The Wine Independent) compares the growing season to that of 2017, but feels the resulting wines – at their best – are riper and weightier, with more purity. Although there are some wines marked by smoke taint, others are “wonderfully impressive” (indeed, she’s already given Harlan and Promontory 100 points).   The 2020 vintage is far from simple, but it shouldn’t be dismissed totally. There are some beautiful wines, totally unmarred by the year’s conditions. We won’t pretend there aren’t wines that are lesser, although we have to admit this is on hearsay alone based on our tastings so far, but – at the top of the quality spectrum, where finances allow the attention to detail required to achieve excellence – there is nothing for producers to gain by releasing flawed wines. Take these wines one by one, assessing their worth and value, and you’re guaranteed to be rewarded.  The vintage in brief  -  A vintage set to be remembered for both wildfires and the covid pandemic  -  Not every producer in the region made wine, with smoke taint an issue for some  -  A challenging year that favoured producers who pick early  -  A hot, dry season that made for low yields (reduced by 20-50%) and concentrated wines  -  Rich, ripe and concentrated  -  Despite the challenges, there are some stunning wines to be found  Browse all 2020 Napa listings or read more about California, including our dive into the issues surrounding wildfires and smoke taint  

No one is likely to forget the 2020 vintage – least of all Californians who saw their state swept by wildfires. We caught up with some of Napa’s leading producers to talk about the rest of the growing season, the implications of the fires and the style of the wines that were produced

Everything you need to know about 2020 in Napa – a challenging year with wildfires, yet some stunning wines. We talk to top producers about the vintage.

Napa 2020 vintage report

Napa 2020: digging into the difficult year 

Silverado Vineyards

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