Marek Kučera 
Mkweather upgrades warnings according to 3 main Warning categories – temperature, precipitation and wind-related extremes.
Sometimes we can´t to call warm weather as heatwave, mainly in winter half-year, when is warm, but not hot. Similarly it is with coldwaves and cold weather. Therefore, we distinguish heatwaves and warm spells and coldwaves and cold spells.
Rain, storm and fires warnings has given together to the same category. Rain and storms are usually different by lighting activity.
During winter half-year will be added to wind-related extremes fogs too (fogs are linked with calm winds and barrier effects often).
Warnings will be updated for 2 next days every day, we hope that you will be satisfied with us.
Warnings are divided to 3 groups:
1.) Temperature-related extremes:
- heatwaves (over +30°C, with positive temperature anomaly)
- warm spells (winter season, with positive temperature anomaly +2 / +4 / +8°C)
- heavy frosts (under 0°C, with negative temperature anomaly)
- cold spells (summer season, wth negative temperature anomaly -2 / -4 / -8°C)
2.) Precipitation and drought-related extremes:
- severe storms (yellow, orange, red fields on radar)
- heavy rain (above 10, 20 and 50 mm / 24 hours)
- snowing (occurence, above 5 cm, above 20 cm)
- freezing rain
- fires (according to combination heatwave + drought + wind combination)
3.) Wind related extremes:
- windstorm (hurricanes, ex-hurricanes, ex-tropical storms and named storms)
- severe wind (above 80 / 100 / 120 km/h)
- fogs (accorging to area and duration)
Warnings have only informative character and they do not serve for civil or protective forces in selected countries.
Warnings have 3 levels according to severity of effect weather to lives, property and ecosystems.
Marek Sadowski 
