Poland: Heatwave forecast across the country through at least July 1

Forecast models indicate that high temperatures will persist across much of Poland through at least July 1. Temperatures are expected to build across central, eastern, and southern regions Jue 26, with highs of around 29-31 C (84-88 C) forecast. Maximums of around 30-33 C (86-91 F) are expected across most areas of the country June 27-28, with slightly cooler temperatures expected in coastal areas, and highs could reach up to 35 C (95 F) June 29-30. As of June 26, the Polish Institute of Meteorology and Water Management (IMGW) has issued orange heat warnings (the middle level on a three-tier scale) across Holy Cross, Lodz, Lubusz, and Opole, much of Greater Poland, Lower Silesian, and Silesian, and parts of northern Lesser Poland, central and southern Masovian, and northern Subcarpathian provinces. Authorities could issue new alerts or update/rescind existing advisories as weather conditions change over the coming days.

The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout parts of the country. Heatwaves also pose a threat to vulnerable groups - such as the elderly, children, pregnant women, and those with respiratory illnesses - due to the increased possibility of heat stroke or heat exhaustion during prolonged exposure to high temperatures. These health risks could also extend to relatively healthy individuals during significant heatwave events. In addition to significantly impacting athletes and those who work outdoors, high temperatures can cause problems for people using mass transit. The lack of air conditioning and cramped vehicles during rush hour may lead to some passengers being hospitalized for dehydration.

Very high temperatures may warp rail tracks and force passenger and freight trains to operate at reduced speeds. Road surface damage is also possible, and overheated vehicles may worsen traffic problems in urban areas where congestion is already a problem. Commercial trucking disruptions might occur, as very high temperatures put more stress on vehicles, making tire blowouts more common. Major flight disruptions are unlikely at regional airports, but general aviation disruptions are possible, and some airfreight carriers could reduce cargo loads. High temperatures could lead to an increased demand for electricity, which might trigger localized brownouts or blackouts, exacerbating hazardous conditions when air conditioning is no longer possible.