Historic Heatwave Strikes Northern Sweden, Causing Drought and Health Risks
Northern Sweden experiences record heatwave causing drought and health advisories.
Key Points
- • Historic heatwave began on July 10, 2023, with record high temperatures in northern Sweden.
- • Haparanda recorded 14 consecutive days over 25 °C; Jokkmokk had 15 days.
- • First tropical night and ten consecutive tropical nights observed during the heatwave.
- • Significant drought conditions reported, leading to health risk advisories.
In July 2023, northern Sweden faced an unprecedented heatwave that has drawn significant attention due to record-breaking temperatures and associated drought conditions. Beginning on July 10, the heatwave primarily affected the Norrland region, leading to issued warnings for high temperatures and increased forest fire risks, as reported by the Swedish Meteorological and Hydrological Institute (SMHI).
Haparanda and Jokkmokk experienced extraordinary weather patterns, with Haparanda recording 14 consecutive days of temperatures exceeding 25 °C and Jokkmokk experiencing 15 such days. These instances marked the longest heatwave periods in over a century for these locations. The first tropical night of 2023 was noted on July 14, with temperatures not dropping below 20 °C, followed by ten consecutive tropical nights from July 22 to July 31 at Rödkallen, situated between Boden and Piteå.
Accompanying this heatwave was a significant drop in rainfall, which compounded drought conditions throughout the region. For example, Junsele in Ångermanland reached its hottest July day since 1933, hitting 32.9 °C. These extreme weather conditions not only impacted the environment but also raised concerns regarding public health. With indoor temperatures soaring beyond 26 °C for three days, health risks increased, prompting authorities to advise residents on hydration methods, including the consumption of water-rich foods, and to minimize alcohol intake.
Efforts to cope with the heat included recommendations to keep homes cool by drawing curtains and ventilating during the nighttime. Citizens were urged to take cool showers, wear loose-fitting clothing, and limit strenuous activities during peak heat hours. Awareness of heat-related illnesses, such as unusual fatigue and high body temperature, was emphasized as a crucial safety measure.
As the summer progresses and temperatures remain high, residents are encouraged to stay vigilant and prepared amid these exceptional weather-related changes, which highlight the increasing frequency of extreme climate events.