July and August are the happiest months for children in Poland when they look into the calendar. With the end of June they begin the summer vacation. For their guardians it is relax period too – they constantly take time off in their jobs cause it is the best time to spend break in Poland. There is only one uncertain thing – local climate.
That mentioned two months are the time, when in Poland occurs the highest temperature is very hot.
Ordinarily, after few days with 30-35 Celsius degrees warm wind near the Earth connect with cooler air coming from northward. Collectively it is initiate colossal, one-two days long storm with lightning. The biggest gales in polish history happened nearly 90 years ago. First one in July 1928 in Warsaw and neighborhood. That storm leads to gigantic material losses.
There is no summary report but regional media notified about 62 victims , above 150 injured, destroyed buildings, telegraph poles and trees. Lightning bolts caused over 100 fires of houses. Second colossal gale happened in July 1931 near Lublin. Regional media notify about wind blowing at a speed of 500 km/h. Contemporary one of the most massive storm occurred between Wrocław and Łódź in 23rd of July 2009 – this two towns are more than 200 km away from each other. Storm (called “Derecho”) leads to death of 10 people and 100 wounded.
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In Poland gales with lightning are seasonal fact. Highest number of gales is in hilly part of country – in districts called Żywiecczyzna, Bieszczady Mountains and Tatra Mountains it happen roughly 35 days per year. Lowest frequency is in the northern part – 20 days per year.
Other unusual incidents are gales with hail. But what have to occur to create that type of gale? 65 of 68 storms with hail happen when temperature was slightly above 15 Celsius degrees and atmospheric pressure is roughly 850 hPA. Second factor of incidence of hail is closeness of weather front with equator and polar air masses. How can we be confident that our holiday won’t be disorganized by gale? Pick late August days or early June, choose another state for a course or take a fancy to winter sports.