Frost over the British Isles during 2016-17

Figure 1

Now that May is with us and there can’t be many more frosts to come, I thought that I’d look back at the total number of frosts in the period from the 1st of July last year and see how the seasons panned out in regard to air frosts, ground frosts and the number of ice days (maximum temperatures below <0°C for 24 hours). As always with data like this it does depend on receiving 06 & 18 UTC SYNOP data from all stations, and which you can never entirely guarantee that you’ll get, so some of these figures may not be quite exact. I also apologise for the cluttered numbers at this zoom level, which only some fancy decluttering routine would fix. You’ll have to take my word for it, the application is much better than the screenshot.

Figure 2

I think the number of days with an air or ground frost were significantly boosted in the southeast of England as a result of the cold spell in January. It looks like St Mary’s on the Isles of Scilly even managed to escape a ground frost during this last winter, I’m not sure about the two sites on the coast of northern France though.

Figure 3

About xmetman

An ex-metman passionate about all things to do with weather, climate and clouds
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2 Responses to Frost over the British Isles during 2016-17

  1. 1saveenergy says:

    Hi Bruce,

    We are ~ 8 miles from RAF Valley (36 frost days) & think we’ve had only 12 mild frost + 2 hard frost days. (the sun shines on the righteous ? (:-))

    Elsewhere –
    https://www.rt.com/viral/387617-snow-moscow-may-spring/

    I also found some interesting April cold stuff going back to 1780
    http://www.islandnet.com/~see/weather/almanac/arc2013/alm13apr.htm

    j

  2. haaark says:

    Surprising what a difference there is in microclimate between here (Coombe Dingle, semi rural, woods to the N., at the top of a shallowly descending road) and Filton (2 miles up the road, flat, exposed, prone to fog).
    I leave my pelargoniums out in pots all winter. Maybe once or twice a winter I throw floss over them-but maybe I’m being a little over-cautious. There’s not been a frost worthy of the name in my back garden since 2010.