IMWM warnings about storms and heat
IMWM 1st degree alerts against heat reaching up to 30 degrees Celsius have been issued for parts of the province. Podkarpackie, Lesser Poland and Świętokrzyskie. They will be valid on Thursday, August 20 at 13.00 - 20.00.
Level I warnings for storms apply to parts of the province. Małopolska, Podkarpackie and Lublin voivodeships. They will be effective from Thursday at 17.00 to Friday 4.00 in the morning. Rainfall of 20 to 35 mm can be expected, as well as wind gusts of 70 to 85 km/h.
Level II storm warnings are issued for the province. Świętokrzyskie, Silesian and parts of the province. Opole, Łódź, Lublin, Masovian, Podkarpackie and Małopolska provinces. Valid from: 7:00 p.m. Thursday to Friday 8.00 The storms will bring rainfall from 35 to 55 mm and wind gusts from 85 to 115 km/h.
A level I meteorological warning provides for conditions conducive to the occurrence of dangerous meteorological phenomena that may cause material losses and threats to health and life, and a level II alert - the occurrence of these phenomena.
The maximum temperature will range from 19 degrees Celsius on the coast, through about 24 degrees in the center, to 31 degrees in the south. The wind will generally be weak and moderate, gusty over the sea and in places in the south, from southwest and west directions.
RCB alert for 8 voivodeships
The Government Security Center sent an alert to residents of 8 voivodeships with the following text: "Weather: today and tomorrow (20/21/08) forecasted storms, strong wind and heavy rainfall. Possible power outages. Avoid open spaces."
The RCB alert was sent to recipients in the following areas:
voivodeship Świętokrzyskie;
voivodeship Silesian;
voivodeship Lesser Poland;
voivodeship Lublin;
voivodeship Podkarpackie;
parts of the province Opole Province (counties: Głubczyce, Kędzierzyn-Koźle, Krapkowicki, Prudnik and Strzelce);
parts of the province Masovian Voivodeship (counties: Lipski, Przysucha, Radom, Radomski, Szydłowiec and Zwoleń);
parts of the province Łódź (counties: Opoczyński, Piotrków, Piotrków Trybunalski and Radomszczański).
Night from Thursday to Friday: storms in the south and east
The weather will remain unsettled overnight. It will remain cloudy, but clear weather is possible in the northwest. There will be scattered rain in places, and there will also be thunderstorms in the south and east of the country. Initially, hail will be possible locally.
The highest rainfall amounts are forecast in the south - up to 40 mm of rain may fall there during storms. In the east, rainfall may reach 20 mm. Wind gusts during storms will reach up to approximately 80 km/h, and locally even 90 km/h in the south. The minimum temperature will range from 12 degrees in the north, around 16 degrees in the center, to 18 degrees locally in the southeast.
IMWM also pays attention to the conditions in the mountains. High in the Carpathians, wind gusts may reach 70 km/h, and in the Sudetes up to 55 km/h. In the morning, fog will appear in Masuria and Podlasie, limiting visibility to about 500 meters.
Friday: calmer during the day, but heavy rainfall will arrive in the evening
On Friday, August 21, the day will be generally light and moderately cloudy. More clouds will appear at times in the south, east, center and north-western corners. Scattered showers will be possible in these regions.
Thunderstorms may still occur in the south and southeast, but the forecast rainfall amounts will be lower - up to 15 mm. During storms, wind gusts may reach approximately 70 km/h. The maximum temperature will range from 21 degrees at the seaside, through about 26 degrees in the center, to locally 28 degrees in Podkarpacie. The wind will be weak, moderate on the coast and in the east, mostly from the west. In the western and southern parts of the country, the wind direction will be more variable. However, the most significant change will take place on the night from Friday to Saturday.
Night from Friday to Saturday: heavy rainfall over a large area
On the night of August 21-22, there will be heavy and complete cloud cover, and rain will occur in many regions. Thunderstorms may also occur in places in the southeastern half of the country. The forecast for the belt stretching from Lower Silesia and the Opole region through the center of the country to Masuria and Podlasie is particularly important. IMWM forecasts moderate and heavy rainfall there. Total rainfall in this area may range from 30 to 55 mm.
In the southeast, where thunderstorms may occur, local rainfall may reach 20 mm. During storms, wind gusts may reach up to 70 km/h, while high in the mountains the wind may gust up to 85 km/h. The minimum temperature at night will range from 13 to 17 degrees Celsius.
