Seasons im my region (SIMR) at the end of April 2017: Due to the comeback of winter in late April the last of my spring indicators, the beech leaf unfolding occurred later than expected: on April 30th only. This means that we had 100% spring on May 1st only, while we have 10% summer since April 2nd already (first thunderstorm). - This graphics shows the linear sequence of the seasons in my region, defined by the following self-chosen indicators:
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spring:
1 Willows in full bloom
2 First chiffchaff song
3 Bird cherry in bloom
4 General bloom of cowslips
5 Beech leaves unfolding
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summer:
1 Wild cherries ready to harvest
2 First wild strawberries
3 First thunderstorm
4 Air temperature above 30°C
5 Linden tree in bloom
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autumn:
1 Many autumn crocuses in bloom
2 Fog from early evening to late morning
3 Rose hips get soft and sweet
4 Larch needles start turning
5 Flocks of starlings start to migrate
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winter:
1 First frost
2 First snowfall
3 All the deciduous trees have lost their leaves
4 First snow cover for more than 2d
5 First cold surge from east
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