With twelve consecutive dry days it has been the longest dry spell since August 2013. The total rainfall for June still stands at 32mm (56% 0f the 30-year average) but with the numerous dry days and much sunshine the total for evapotranspiration (ET) is now 90mm, or nearly three times the rainfall total. ET is the amount of water vapour returned to the atmosphere from the ground, plant material and surface water sources.
Not surprisingly the soil temperature at a depth of 5cm was the highest this year at 19.2C at 0800 on the 25th and the humidity was the lowest at 72%.
Category: News
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Longest dry spell for ten months
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Evaporation double rainfall
Total rainfall for June to date is 32mm being just 56% of the 30-year mean. The spell of dry, very warm weather has meant that evaporation, or the amount of water vapour returned to the air from plants, the ground and water surfaces amounts to 64mm or double the rainfall.
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Five fine days and then a thunderstorm
Yesterday was the hottest day of the year with a peak temperature of 25.4C followed by the warmest night when the thermometer did not drop below 14.2C. The thunderstorm that started at 2254 lasted for almost forty five minutes and gave intense rainfall for around five minutes, the total from that storm was 11.3mm.
All the built up heat over the last few days and cloud cover overnight gave a reading of 18.1C from the soil thermometer at a depth of 5cm, the highest at 0800 this year. -
U V levels highest this year
The Ultra Violet levels for the last two days have peaked in the ‘Very High’ category and have been the highest since July 2013.
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Wettest January to May recorded
With a total precipitation of 600.6mm it has been the wettest January to May period since my records began. This total is not far from double the average over the last 30-year period. The driest 5 month start to the year was in 1997 when only 176.6mm fell in this period.