July and August are the happiest months for polish kids when they look into the calendar. With the end of the school year they start the summer holiday. For their guardians it is relax period too – they constantly take a break in their bussineses cause it is fine term to use free time in Poland. There is only one unknown – local climate.
That voiced two months are the moment, when in Poland occurs the highest temperature is deeply hot.
Generally, after few days with 86-95 Fahrenheit degrees warm wind near the Earth inosculate with cooler air coming from north. Together it is create huge, a few days long storm with lightning. The most massive gales in polish past times occurred roughly 90 years ago. First one in July 1928 over Warsaw and neighborhood. That gale leads to gigantic material losses.
There is no summary report but regional press notified about 62 victims , more than 150 injured, ruined houses, telegraph poles and trees. Lightning hits caused over 100 houses fires. Second huge gale occurred in July 1931 near Lublin. Regional media break the news about wind blowing at a speed of 500 km/h. Current one of the largest gale occurred between Wrocław and Łódź in 23rd of July 2009 – this two places are over 200 km away from themselves. Storm (called “Derecho”) leads to death of 10 people and 100 wounded. In Poland gales with lightning are yearly phenomenon. Highest number of storms is in south part of country – in places called Żywiecczyzna, Bieszczady Mountains and Tatra Mountains it happen about 35 days per year. Lowest frequency is in the northern part – one in the 18 days.
Other interesting fact are storms with hail. But what should happen to create that category of gale? 65 of 68 storms with hail occur when temperature was slightly over 15 Celsius degrees and air pressure is nearly 850 hPA. Second cause of number of hail is closeness of weather front with equator and polar air masses. How can we be confident that our vacation won’t be disturbed by storm? Pick late August time or early June, choose other state for a course or take a fancy to wintertime rest.