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Post by Donar on Apr 30, 2020 7:19:58 GMT -5
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Post by Donar on Apr 30, 2020 8:40:44 GMT -5
A few observations:
- Scandinavia and Atlantic Europe are even more deprived than I thought, though western Finland looks good in July
- highest annual densities are around the northern Italian towns Lecco and Tolmezzo -> my new favourite European climates
- interesting how Romania peaks in June and is highest of Europe while eastern Poland stands out in August
- the eastern Mediterranean peaks in autumn & the high pressure preventing convection in summer is clearly visible
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Post by nei on Apr 30, 2020 8:58:04 GMT -5
here's a US map for comparison: ecle.biz/lightning-risk-map/looks like northern Italy is similar to most of the Northeast (New England is lower), much lower than the south and most of the midwest. Wonder why the French side of the Alps get less thunderstorms than northern Italy? Mediterranean French Alps are just as humid but maybe drier and more stable in the summer? Or is the humidity confined to the coast so doesn't boost storms much. Their thunderstorm peak is in summer like the northeast US, not spring like the south and lower midwest. rozenn |
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Post by rozenn on Apr 30, 2020 10:27:59 GMT -5
The high humidity is confined to the coast and the lowest layers of the atmosphere, the storms aren't fueled with it. I guess the absence of flow in Italy favors convection, there's no dessicating mistral there! The diff between the late spring precip peak and the (very) relative summer minimum is also much more pronounced on the western side of the Alps.
One thing to note about the above maps is that the period of study is only 5 years long. Decent, but given the high variability of the parameter at play, probably not enough for regions with a lot tstorm count.
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Post by Donar on Apr 30, 2020 10:30:52 GMT -5
The high humidity is confined to the coast and the lowest layers of the atmosphere, the storms aren't fueled with it. I guess the absence of flow in Italy favors convection, there's no dessicating mistral there! The diff between the late spring precip peak and the (very) relative summer minimum is also much more pronounced on the western side of the Alps. One thing to note about the above maps is that the period of study is only 5 years long. Decent, but given the high variability of the parameter at play, probably not enough for regions with a lot tstorm count. Yeah that single event in England is visible in the overall map for example, so I think this is even more problematic for areas with few storms. |
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Post by rozenn on Apr 30, 2020 10:52:44 GMT -5
Damned autocorrect, wanted to write low, not lot.  |
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Post by boombo on Apr 30, 2020 11:48:55 GMT -5
Doesn't surprise me at all that we get essentially no storms compared to Central Europe, I'm surprised that the Baltic acts as a barrier for southern Sweden and Finland as much as the English Channel does for us though.
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Post by Cadeau on Apr 30, 2020 12:17:51 GMT -5
Thanks for all these visual maps! Certainly Bretagne and the Cotentin Peninsula are superior in the country. Ireland plays amazing as expected. I'll save monthly maps to keep in mind where is the safe zone.
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Post by Dean York (Old) on Apr 30, 2020 13:17:15 GMT -5
Doesn't surprise me at all that we get essentially no storms compared to Central Europe, I'm surprised that the Baltic acts as a barrier for southern Sweden and Finland as much as the English Channel does for us though. UK is shit for decent storms. I had a week in Bavaria years ago, when I was in the Navy, and that week had two thunderstorms that just dwarfed anything I've ever seen in the UK. I couldn't believe how even Germany got them so much better than us. |
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Post by Deleted on Apr 30, 2020 16:13:33 GMT -5
The time period was one characterised by a lack of thunderstorm activity compared to normal in the UK (but the June 2012 supercells are visible). That's why the lightning density is highest in northern England rather than Kent and East Anglia, as it should be.
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Post by trolik on Apr 30, 2020 16:51:04 GMT -5
The time period was one characterised by a lack of thunderstorm activity compared to normal in the UK (but the June 2012 supercells are visible). That's why the lightning density is highest in northern England rather than Kent and East Anglia, as it should be. I thought thunderstorm activity is the most pronounced in the east midlands? not really much in it though. |
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Post by sari on Apr 30, 2020 21:58:45 GMT -5
A few observations: - Scandinavia and Atlantic Europe are even more deprived than I thought, though western Finland looks good in July
- highest annual densities are around the northern Italian towns Lecco and Tolmezzo -> my new favourite European climates
- interesting how Romania peaks in June and is highest of Europe while eastern Poland stands out in August
- the eastern Mediterranean peaks in autumn & the high pressure preventing convection in summer is clearly visible
Romania -> Poland is similar to the northward shift that happens in North America from April to July. Peak storm activity shifts from the Gulf Of Mexico coast up to the US/Canada border and back again. here's a US map for comparison: ecle.biz/lightning-risk-map/looks like northern Italy is similar to most of the Northeast (New England is lower), much lower than the south and most of the midwest. Wonder why the French side of the Alps get less thunderstorms than northern Italy? Mediterranean French Alps are just as humid but maybe drier and more stable in the summer? Or is the humidity confined to the coast so doesn't boost storms much. Their thunderstorm peak is in summer like the northeast US, not spring like the south and lower midwest. rozenn Just more proof that Colorado Springs is an epic climate. The purple spot in Colorado on that map is right over it. Yeah that single event in England is visible in the overall map for example, so I think this is even more problematic for areas with few storms. I was wondering about that. It seemed like a very odd geographic distribution. |
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