Claude E. "Ed" Elkins
Executive Vice President and Chief Marketing Officer at Norfolk Southern
Thanks, Paul, and good morning to everybody on the call. Now before we get into the numbers, I want to call out the collaboration between our teams and Marketing and Operations as we improve service and innovate solutions to deliver value for our shareholders and for our customers. I'll talk about it more as we move along here, but I think it's important to recognize the steady progress that we're seeing deep in these organizations that's starting to pay off.
Let's start on Slide 18 and review our results for the third quarter. Norfolk Southern volumes and revenue was down 2% and 11%, respectively, year-over-year in the third quarter. Revenue declines outpaced volume due to lower fuel surcharge and intermodal storage revenue compared to the prior period.
Within merchandise, weakness in several energy markets was the leading driver of a 3% decline in total volume. Crude oil shipments were challenged by unfavorable fuel price differentials that discourage crude by rail to East Coast refineries that we serve. Also, low natural gas prices negatively impacted shipments of sand and NGLs. Helping to offset those declines in energy markets with strength in automotive, where volume increased 7% year-over-year in the third quarter. Growth was driven by continued strength and demand for finished vehicles as well as high shippable ground counts.
Merchandise revenue was down 7% due to lower revenue from fuel surcharge and lower volume. However, revenue per unit, excluding fuel, set a new record as it improved 3%, showing sustained price and mix improvement. This quarter marks 33 out of the last 34 consecutive quarters where we've been able to achieve year-over-year growth in merchandise revenue per unit excluding fuel.
Moving on to Intermodal. Volume was down slightly compared with last year as growth in international Intermodal largely offset declines in domestic. On the domestic side, persistently abundant truck capacity and weak freight demand challenge volume. While on the international side, volume improved as customers continued to return freight to IPI service.
Intermodal revenue was down 22% as revenue per unit, excluding fuel, declined 15%. Lower Intermodal storage fees represented more than two-thirds of this decline followed by adverse mix effects from strong international volumes and the impact of persistent competitive pressure in a loose trucking environment. We're also seeing negative mix effects within the international business. First, shippers are returning to lower yielding short-haul lanes that shifted to the highway during the pandemic; and second, growth in lower-yielding empty shipments is also outpacing loaded shipments. Intermodal storage has returned to a normal level, and we expect to lap this headwind in the second quarter of next year.
Lastly, within coal, volume dropped 9% year-over-year with weak conditions in our utility markets, which more than offset strength in our export markets. Utility coal volume was down roughly 26% from prior year levels, driven by high stockpiles and low natural gas prices and prolonged customer and producer outages. Export volume increased year-over-year driven by strong Asian demand. Coal revenue declined 8%, primarily due to lower volume. Revenue per unit excluding fuel set a new record and revenue per unit also increased as positive mix and stronger than expected seaborne coal pricing and modest liquidated damages more than offset a decline in fuel surcharge revenue.
Turning to slide 19. For the fourth quarter, we expect to see slow volume recovery amid uncertain economic conditions. September presented us with some encouraging data that the contraction in manufacturing is slowing and onshoring to the US is on the rise. However, we remain cautious in our optimism as uncertainty surrounding future Fed actions, strike outcomes and geopolitical tension is very pronounced.
Although the macro environment is unclear, we are steadfast in our business development initiatives, and I'll talk about those in a few minutes. Our merchandise markets have upside potential in the automotive and metals markets. We expect growth in automotive as we continue to work through the backlog of shippable vehicles, improve our cycle times and grow our fleet size. We also still see unmet demand in our metals market, which we should realize as improving service should drive year-over-year growth. Offsetting anticipated growth in the fourth quarter will be sustained soft conditions in energy markets as the headwinds that pressured crude, NGL and sand volumes in the third quarter are expected to continue through the remainder of the year.
Automotive production is a key driver for many of our merchandise markets beyond automotive. So the duration and scope of the ongoing new AW strike is a downside risk to our overall merchandise volumes. Our marketing and operations teams are collaborating to deliver incremental business wins across the portfolio of carload markets that we serve by identifying and solving business challenges for our customers at an accelerating pace. This innovation and collaboration will be a driver of future growth for NS.
Intermodal volume is expected to improve year-over-year in the fourth quarter from sustained service recovery and improving market conditions. We're encouraged by the momentum that we're seeing in our domestic market. Our customers are seeing improvements in bid compliance and demand, which has us trending positively in October. While we continue to see a relatively muted peak season which will temper overall volumes. International markets will benefit from strong East Coast import demand and favorable ocean rates driving demand for IPI.
We expect the negative mix effects from the shift back to short-haul lanes to persist in the fourth quarter, and we continue to experiment and develop new services for our Intermodal customers, and I'll talk about that in just a minute. Coal volumes should be stable in the fourth quarter with upside potential in export markets as new production comes online.
In addition, recent trends in seaborne coal prices suggest higher prices throughout the remainder of the year due to supply constraints out of Australia as well as continued strong demand out of China and India. Domestic coal shipments should improve sequentially in the fourth quarter on improved service and fewer outages, but headwinds from low natural gas prices will continue to be a limiting factor. And while uncertainty in the economy continues to persist, we're confident in our ability to collaborate with our customers to drive incremental volume and to continue providing value in a manner that drives growth in the future.
Now before I turn it back to Alan, I would like to expand briefly on how we're providing value in ways that drive growth in an unfavorable market. Slide 20 features key examples of new service offerings we developed this quarter aimed at making Norfolk Southern the preferred option for freight transportation and driving modal conversion. It's important to recognize that collaboration and teamwork invested by both marketing and operations to bring these projects to life.
In October, we partnered with CN to expand intermodal service and connect customers in Atlanta and Kansas City with markets on the CN in Canada. We also partnered with Florida East Coast Railway to expand both domestic and international intermodal services in Florida. These new services are designed to give our customers flexibility expand the reach of the NS Intermodal Network into key growth markets and give more ways for our customers to reduce their supply chain greenhouse gas emissions.
Early in September, we also announced an investment in DrayNow, a company focused on modernizing technology solutions for Intermodal. DrayNow is revolutionizing Intermodal's first and final mile journey through an app that provides customers with real-time shipment tracking and document capture of drayage shipments. Norfolk Southern is the operator of the most extensive Intermodal network in the Eastern US. And together with DrayNow, and our best-in-class customers, we will drive more transparency into a fragmented supply chain and increase the ability to best serve our intermodal customers.
And lastly, our persistent industrial development efforts paid off as both new and expanded industries turned on additional volume in the third quarter, including a new cement transload and ethanol terminal and a containerboard warehouse, as well as expanded rail operations at an established grain elevator. We like to make our customers for locating on our network and allowing NS to serve their market needs.
Together, these diverse projects will generate over 7,800 new carloads annually at full production. We're aggressively pursuing project-oriented growth to enhance the NS network in a fragile freight environment. We're not sitting back and waiting for Carlos to come to us. But rather we are proactively making enhancements to our service portfolio to become a preferred service provider for our customers and drive sustainable and smart growth in the future.
And concluding on slide 21, let's look at our 2023 outlook. Based on lower Q3 revenue, which included significantly the lower fuel surcharge, we're now expecting 2023 revenue to be down closer to 4% year-over-year.
With that, I'll turn it back over to Alan to bring us home.