Tag Archives: circumhorizontal arc

June 2014: warm and dry

June 2014 continued this year’s theme of being milder than normal; the mean temperature of 17.1C was 1C above average, making it the 22nd warmest June since 1797.

little fluffy clouds
June was marked by some spectacular cloudscapes and sunsets. This was the view across Wanstead Flats from Centre Road looking toward Ilford on the 21st

June, like  March and April, was dryer than average with just 15.2mm of rain, that’s just under 30 per cent of average.

The driest June since 2000 started off unsettled with frequent rain – 6mm falling on the 3rd. The following day was cool with the temperature reaching just 16.2C.

Though there were nine days when over 10 hours of sunshine was recorded the magic 80F was surpassed just once: on the 9th when 27.5C was reached under 6 hours of sunshine. This sunniest day was the 10th when 14 hours of sunshine nudged the thermometer to 24.5C. Overall there were 214.1 hours of sunshine – that’s 120% of average, the sunniest since 2011.

On many days during June, including the 30th shown here, the sky turned dark but just spits and spots of rain were often produced
On many days during June, including the 30th shown here, the sky turned dark but just spits and spots of rain were often produced

Despite plenty of potential no incidents of thunder were recorded – the much-hyped weekend of the 7th / 8th saw less than 2mm of rain – all of the action staying well to our east in the France, Germany and the Low Countries. Further thundery potential on the 13th failed to produce anything in this area though a disturbance over Berkshire saw thunderstorms develop in the Oxford, Reading, Basingstoke and Wokingham region, with up to 38mm of rain falling over a wide area.

It is a typical feature of summer that rainfall can vary a great deal across a small area. The nearest official station to Wanstead, St James’s Park 8.4 miles to our south-west, recorded 33.8mm – more than double what fell here.

Some nights were chilly when the sky cleared but there was no air frost or ground frost.

To view full stats follow this link:http://1drv.ms/1kiTuzv

Yet another occasion of impressive cloud formation during June included this example of late evening cirrus. The formation, seen at ground level, seemed similar to a display of the Aurora
Yet another occasion of impressive cloud formation during June included this example of late evening cirrus. The formation, seen at ground level, seemed similar to a display of the Aurora
Circumhorizontal arc over Aldersbrook
Circumhorizontal arc over Aldersbrook
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