El Nino Winter Forecast Reshapes Gas, Crop and Shipping Risk Into 2027

Equatorial Pacific sea surface temperatures have moved far enough, fast enough, that commodity desks are now pricing weather rather than monitoring it. NOAA's Climate Prediction Center, in the diagnostic discussion issued on July 9, 2026, kept an El Nino Advisory in force and put the odds of a very strong event during October through December at 81 percent, a strength tier that would place the episode among the largest since consistent records begin in 1950.

The center's weekly readings at that point showed the Nino 3.4 region at plus 1.2 degrees Celsius, the Nino 1+2 region off South America at plus 2.7 degrees and Nino 4 at plus 0.5 degrees, with a recent downwelling Kelvin wave deepening the thermocline and loading the eastern Pacific with warm water. The International Research Institute for Climate and Society at Columbia University, publishing its own July quick look, logged the weekly Nino 3.4 index centered on July 15 at plus 2.1 degrees, against a June monthly anomaly of plus 1.55 degrees, an April to June average of plus 0.98 degrees and a June Southern Oscillation Index of minus 24.9.

Ocean signal turned decisive during July

Model agreement is the part that matters for hedging desks. IRI's plume showed 23 of 26 models forecasting a very strong El Nino, defined as a Nino 3.4 anomaly at or above plus 2.0 degrees, during the October to December peak window. IRI's probability table assigned El Nino a 100 percent chance for July through September 2026, 100 percent for October through December, 100 percent for January through March 2027, 99 percent for February through April and 94 percent for March through May 2027. CPC separately put the odds of the event lasting into early spring 2027 at 97 percent.

Amplitude of that order narrows the analog set to 1997-98 and 2015-16. Macrobond product specialists Julia Sinitsky and Ted Aiken, writing on June 12, noted that the Oceanic Nino Index peaked near plus 3 degrees during the 2015/16 episode, the benchmark against which the coming El Nino winter is being measured. They also flagged a typical six to twelve month lag between the ocean signal and the point where production losses reach physical markets, which pushes much of the commodity impact into calendar 2027.

Natural gas enters the season with a cushion

US gas balances are approaching the El Nino winter better supplied than in either analog year. The Energy Information Administration's July Short-Term Energy Outlook forecasts working inventories of 3,966 billion cubic feet at the end of October, roughly 5 percent above the five-year average, after ending June about 6 percent above it. Dry production is projected at 111.25 billion cubic feet per day in 2026, rising to 115.30 in 2027, with growth led by the Permian. Total consumption is put at 92.14 billion cubic feet per day this year.

Price forecasts reflect that cushion. EIA expects Henry Hub to average 3.57 dollars per million British thermal units in the fourth quarter of 2026, about 5 percent below the same quarter of 2025, with the full-year 2026 average close to 3.70 dollars and 2027 settling just under 3.50 dollars before the fourth quarter of 2027 recovers to 3.78 dollars. Liquefied natural gas exports are forecast at 17.4 billion cubic feet per day in 2026 and 18.6 in 2027, a demand floor that did not exist during the 1997-98 event.

Recent history shows how quickly the arithmetic can invert. Henry Hub spot prices averaged 7.72 dollars in January 2026, an 81 percent jump from December's 4.26 dollar average and the highest nominal monthly average since September 2022, before a mild February pulled residential and commercial heating demand back and softened prices into spring. Natural Gas Intelligence reported the winter 2026/27 strip trading around 4.522 dollars in May, well above EIA's fourth-quarter cash forecast, which leaves room for a warm-winter unwind if the pattern verifies.

Distribution matters more than the average. A strong El Nino winter typically delivers a milder, drier regime across the northern United States, where most heating degree days are concentrated, and a wetter, stormier and at times cooler regime across the southern tier, so demand destruction in the Midwest and Northeast is only partly offset by southern cold. Utilities that hedged against a repeat of January's 7.72 dollar Henry Hub average carry the cost of that insurance either way.

Crop belts split between beneficiaries and casualties

Agricultural exposure is not symmetric. WisdomTree's commodity team expects Australian wheat plantings to fall sharply, with production potentially down about 9 million tonnes in 2026/27, a material subtraction from one of the four largest exporters. Argentina sits on the other side of the ledger as one of the few structural beneficiaries, since an El Nino winter typically delivers above-average rainfall to the Pampas and to southern Brazil, supporting soybean and corn yields. Soybean supply looks comfortable, with the three largest exporting regions tracking record output for 2026-27.

Brazil's risk is timing rather than volume. Delayed main-crop planting compresses the window for the safrinha corn harvest, the second crop that has become a swing supply for global feed grain trade. Tropical softs carry the sharper tail. Reduced rainfall in Vietnam and Indonesia from midyear onward stresses robusta coffee, while West African cocoa faces another cycle of heat and erratic rain. Macrobond calculated a roughly 250 percent rise in cocoa prices through the 2023-2024 stress period, an indication of how thin those balance sheets run.

Macro research puts a number on the aggregate effect. An International Monetary Fund working paper found that a one standard deviation El Nino surprise raises real commodity price inflation by about 3.5 to 4 percentage points, and Federal Reserve research has attributed close to 20 percent of the variation in commodity price inflation to the ENSO cycle. Bloomberg Economics modeling of prior events added 3.9 percentage points to non-energy commodity prices and 3.5 points to oil.

Hurricane suppression trims one catastrophe channel

Insurance exposure moves the other way. NOAA's May 21 seasonal outlook called for 8 to 14 named storms, 3 to 6 hurricanes and 1 to 3 major hurricanes at 70 percent confidence, with a 55 percent probability of a below-normal season against 35 percent near normal and 10 percent above normal. The agency put the odds of El Nino conditions during May through July at 82 percent. Ken Graham, director of the National Weather Service, cautioned that "It only takes one storm to make for a very bad season."

Colorado State University has cut its seasonal numbers twice since spring. The June 10 update went to 11 named storms, 5 hurricanes and 2 major hurricanes, down from 13 and 6 in the April 9 call. The July 8 revision cut again to 9 named storms, 4 hurricanes and 1 major hurricane, and lowered the probability of a major hurricane landfall on the continental United States to 17 percent from 24 percent a month earlier. Phil Klotzbach, the senior research scientist behind the forecast, wrote that the driver is "a high likelihood for a strong El Nino," which he said "typically decreases Atlantic hurricane activity via increases in Caribbean/tropical Atlantic vertical wind shear." CSU's six analog years, 1957, 1965, 1987, 1997, 2009 and 2015, all produced below-average Atlantic activity, and the team put 2026 at roughly 60 percent of a typical season. Tropical Storm Arthur had already formed when that forecast published, and a mid-season adjustment follows in August.

Panama Canal tightens drafts before the dry season

Shipping is already absorbing the forecast. The Panama Canal Authority set the maximum authorized draft for Neopanamax transits at 49.5 feet on July 3, reduced it to 14.94 meters, about 49 feet, in tropical fresh water effective July 24, and scheduled a further cut to 14.78 meters, about 48.5 feet, for August 15. The authority framed the reductions as preemptive conservation of Gatun Lake storage against a potentially severe El Nino winter dry season, and said it would keep monitoring lake levels and hydrological projections before deciding on additional operational changes.

Scale sets the stakes. The canal handles roughly 5 percent of global maritime trade and has been running near 38 daily transits, close to the upper end of operating capacity, according to gCaptain reporting on July 6. Current limits remain modest against the 2023-24 drought, when far lower lake levels forced draft and slot restrictions that produced lengthy vessel backlogs and pushed traffic toward alternative routings. Container lines price draft loss as deadweight surcharges, which pass through to shippers with a lag of one to two quarters.

Historical analogs carry large dollar tags

Tangible loss estimates from prior events understate the macro cost. Direct economic losses from 1997-98 El Nino weather in the United States came to about 4 billion dollars, while the multi-year drought and fire that followed the 2015-16 event in Amazonia cost roughly 26 billion dollars. Flood damage tied to the 1982-83 and 1997-98 events produced more than 1.4 billion dollars in estimated insurance claims.

Research published in Nature Communications in 2023 reached far larger figures using a nonlinear climate-economy model fitted to historical data, attributing 2.1 trillion dollars of lost global output to the 1997-98 event and 3.9 trillion dollars to 2015-16, measured across the three years following each peak. Macrobond's series on global natural disaster costs shows the backdrop shifting underneath those comparisons: annual totals ran under 20 billion dollars in the early 1990s, repeatedly exceeded 80 to 100 billion dollars after 2010 and topped 100 billion dollars in 2022.

Regional exposure runs through agriculture-heavy economies

Country-level damage tracks the share of output tied to farming. Bloomberg Economics modeling of previous El Nino winter cycles put the hit to annual GDP growth at close to half a percentage point in India and Argentina, and about 0.3 percentage point in Peru, Australia and the Philippines. The IMF has estimated that El Nino events can erode Indonesian growth by up to 0.35 percentage point per quarter at the median.

Structural vulnerability sorts the same way. Macrobond's comparison of agricultural value added shows agriculture above 30 percent of GDP in Ethiopia and above 20 percent in Nigeria, Pakistan and Tanzania, against single-digit shares in Russia, Poland and South Africa. Food import bills in the first group move with tropical soft commodity prices and with the dollar, which compounds the terms-of-trade shock when both turn at once.

Calendar points between August and January

Several dates convert forecast into data. CPC issues its next ENSO diagnostic discussion on August 13, and NOAA updates the Atlantic hurricane outlook in early August, the point at which the below-normal call either firms or breaks. The Panama Canal Authority's draft reduction to 14.78 meters takes effect August 15, with any further change announced against Gatun Lake readings through the September to December rainy season.

Energy and crop checkpoints follow. EIA's end-of-October storage estimate of 3,966 billion cubic feet is the number gas traders will mark the El Nino winter against, and monthly Short-Term Energy Outlook revisions will show how quickly the agency reprices heating demand. Model consensus places the peak between November 2026 and January 2027, with IRI still assigning El Nino a 94 percent probability for March through May 2027, meaning agricultural transmission runs well past the point where the winter heating trade is settled.