Do roku 2016 raport oznaczony numerem 1 był tworzony za okres od 1 kwietnia do 31 maja. Od roku 2017 analizy są wykonywane o dekadę wcześniej czyli 1 raport oznacza okres od 21 marca do 20 maja

Communication report regarding the incidences of drought conditions in Poland

Year: 2010; period: 02 (11.IV - 10.VI)

In the second reporting period, i.e. from 11 April to 10 June 2010, there was no occurrence of agricultural drought conditions in Poland. The climatic water balance values (CWB), on the basis of which the risk assessment of drought is calculated was slightly negative for Central Poland. However, the CWB calculated values for winter cereals, spring cereals, rape and turnip rape, sugar beet, fruit shrubs, fruit trees, strawberries are much higher than the critical value. In the rest of the Poland the CWB values are positive.

In April-May temperatures were higher than the average of the year. In the first ten days of June a mini heat wave hit Poland, for several consecutive days the maximum temperature was above 30°C.

The precipitation in April on the coast, Warmia and Lubelski region was low. In central Poland Podlasie, Mazowsze and Wielkopolska, precipitation was normal. In May, especially in the middle ten days of this month, very high precipitation was recorded over the whole country in the south of the country reaching 150% of normal.

In the first decade of June Poland in terms of precipitation was highly variable. In the south-eastern part of country very heavy rainfall in many places exceeding 100 mm, and in some places even more than 150 mm. By contrast, in central Poland precipitation was at a normal level while in the northern parts of country it was below normal.

In the southern and south-eastern parts of the country precipitation in the last sixty days period were higher in relation to previous period, up to 100 mm. Precipitation in the southern areas of the Slaskie region exceeded 600 mm (i.e. 300-400% of the norm).

Relative to the first reporting period in most areas of the country, the CWB value decreased by 20 to 30 mm, but this reduction did not cause the risk of agricultural drought. The lowest CWB values (-50 to -59 mm) occurred in Żuławy, in the lower Warta and in the small area located south of Miedwie Lake in Zachodniopomorskie voivodeship. However, in the regions of Lubelskie (eastern part), and especially in Podkarpackie voivodeship the value of CWB in the last sixty days period have increased by 30 to 40 mm. Areas with heavy precipitation in May and June - recorded a very high value of CWB (200 mm) and in some places even more than 500 mm (around Bielsko-Biala). At Podkarpackie voivodeship in many places there was an inundation or flooding of fields. In the south of Poland, there are still no problems of a water deficit for crops, while instead there were significant problems with its excess. A large excess of water still exists in the southern provinces: Slaskie, Malopolskie and Podkarpackie voivodeships.