Britain on Track for Worst Cereal Harvest Since 1984 After Record Heat and Drought

Extreme weather driven by climate change is causing severe impacts globally, with Britain on track for its worst cereal harvest in four decades due to record heat and drought, while South Korea battles a record-breaking heatwave that has triggered serious warnings across greater Seoul and caused dozens of deaths.

Britain Faces Worst Cereal Harvest in 40 Years

England recorded its warmest June on record and the UK its second warmest, with England and Wales experiencing their driest July on record. [1] The Energy and Climate Intelligence Unit said the tough growing conditions may have knocked as much as 2.5 million metric tons off Britain’s cereal and oilseed harvest compared to earlier forecasts, costing UK arable farmers up to £390 million in lost revenue. [1] Provisional estimates indicate the UK cereal and oilseeds harvest could total 19.5 million tons, potentially the worst since detailed records began in 1984, with four of the five worst harvests this decade linked to extreme weather worsened by climate change. [1] The Energy and Climate Intelligence Unit noted that with 54 percent of the wheat crop harvested, if these average yields hold, the UK cereal and oilseeds harvest would be 19.5 million tons, surpassing 2020 as the worst harvest on record since detailed records began in 1984. [1] It cited provisional yield estimates produced by the Agriculture and Horticulture Development Board suggesting wheat, spring barley and oat yields will all be down, with the estimated wheat yield well below the ten-year average at 6.8 tons per hectare. [1] Even if yields are revised up, 2026 is now likely to be one of the five worst harvests since 1984, which would mean that four out of five of the worst harvests on record had occurred this decade after periods of extreme weather made worse by climate change, according to the Energy and Climate Intelligence Unit. [1]

Farmers Warn of Food Shortages and Call for Action

Earlier this week, the National Farmers’ Union warned Britain could face shortages of certain foods due to the drought and called for the industry to be given tax breaks to improve water storage. [1] Last week more than 100 organisations wrote to new Prime Minister Andy Burnham urging him to make food a national priority alongside defence and energy. [1] The National Farmers’ Union has highlighted the risk of food shortages stemming directly from the current drought conditions affecting arable production. [1] Calls from the sector include tax breaks specifically to support improved water storage infrastructure for farmers. [1] The open letter to Prime Minister Andy Burnham emphasizes treating food security on equal footing with defence and energy needs. [1]

Record Heatwave Grips South Korea

The state weather agency issued additional serious heat wave warnings in the greater Seoul area Wednesday, placing 43 percent of the region under the highest alert level. [5] The top-tier warnings took effect at 11 a.m. in southern Incheon, and nine cities and zones in Gyeonggi Province, including Gwangmyeong, Yeoncheon and Hwaseong, raising the total to 20 out of 46 land weather advisory areas in the capital region. [5] The alert was also issued for Cheongyang in South Chungcheong Province, marking the first time it was implemented in the central Chungcheong provinces. [5] On Tuesday, all of Seoul was placed under the top-tier warning for the first time since its introduction to the heat wave alert system on June 1. [5] Under KMA guidelines, a serious heat wave warning is issued when apparent temperatures are projected to hit 38 C or higher, or when daily maximums reach 39 or above, in areas where the highest perceived temperature is 35 C or higher for two or more consecutive days. [5] South Korea has been battling severe heat, with temperatures in the southeastern city of Yangsan reaching 42.5 C, the highest figure since modern weather observations started in 1904. [5] Elderly residents of a low-income Seoul neighborhood sought relief in cooling mist systems and water-spraying trucks on Tuesday as South Korea's record-breaking heatwave continued to grip the capital. [2] Cho Sang-yeon, a 57-year-old resident sitting outside a store, said he had never experienced the heat as much as this year in more than two decades of living in the area. [2]

Heatwave Death Toll and Health Impact

The extreme weather has taken a severe toll on public health. [5] The Korea Disease Control and Prevention Agency reported 2,221 heat-related hospitalizations and 19 fatalities between May 15 and Monday. [5] South Korea has recorded 2,221 heat-related hospitalizations and 19 fatalities between May 15 and early August. [5] The Korea Disease Control and Prevention Agency has tracked these heat-related cases amid the ongoing severe heat conditions. [5]

Flash Flooding Strikes U.S. Regions

Flash flood warnings were issued for parts of southeastern Arizona and southwestern Virginia due to heavy thunderstorm rains. [3][4] The National Weather Service in Tucson has issued a Flash Flood Warning for South Central Cochise County in southeastern Arizona until 1100 PM MST, with Doppler radar indicating thunderstorms producing heavy rain focused on locales just north to northeast of the city of Douglas, where between 1 and 1.5 inches of rain have fallen and additional rainfall amounts up to 0.75 inch are possible. [3] The National Weather Service in Blacksburg has issued a Flash Flood Warning for Southeastern Bland County in southwestern Virginia and Northwestern Wythe County in southwestern Virginia until 130 AM EDT, with Doppler radar indicating thunderstorms producing heavy rain across the warned area where between 1 and 2.5 inches of rain have fallen and additional rainfall amounts of 1 to 2 inches are possible. [4]

Broader European Production Warnings

Farmers across Europe have also warned of a slump in production and rising prices due to the extreme weather. [1] The impacts reported by European farmers mirror the challenges seen in Britain, with similar extreme-weather effects contributing to reduced output. [1]

What to watch next: Ongoing monitoring of the UK cereal and oilseeds harvest yields as more of the wheat crop is gathered, continued heatwave alerts in the greater Seoul region, and active flash flood conditions in affected U.S. counties.