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Also... not all Cumulonimbus convective clouds form thunderstorms. Sometimes the ingredient wasn't enough to produce the thunder, lightning and downpours and the clouds just collapse or hit pockets of dry air.
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True enough. Around here we don't get thunderstorms every day in summer. But just about every day clouds look like Cumulonimbus, unless we are in bone dry conditions.
You do not get rising air with cool surface air. That's arguing against science.
Look at the photo again and you'll see "blue" in the skies. Those are convective. And unless you have different meaning for Cumulonimbus as well, those are Thunderstorm clouds.. You don't need clear skies for them to form, although that does help when the sun "WARMS" the surface which helps create more instability.
Am I saying it NEVER happens in winter or below 65F? NOPE. Especially in southern Latitudes. But its a Spring/Summer look because thats when it happens most.
I'm not saying that it was too cool for those clouds to form, just that they look like classic after rain cumulus cloud,rather than Cb cloud - they don't look much higher than about 10000 -12000ft.
I'm used to Cb that produces thunder, only forming in otherwise clear skies. I wouldn't describe those skies as clear.
True enough. Around here we don't get thunderstorms every day in summer. But just about every day clouds look like Cumulonimbus, unless we are in bone dry conditions.
Some humid days just get haze. And up here, we get some clear deep skies or just scattered puffy cumulus clouds; perhaps more "bone dry" days. Rainy, but high humidity summer day. Too much stratus to see thunderclouds even though there was a thunderstorm
later that evening:
Just lots of cumulus clouds on this cooler summer day
Summer skies look more interesting and active than winter skies. But it could be because I'm outside more?
I'm not saying that it was too cool for those clouds to form, just that they look like classic after rain cumulus cloud,rather than Cb cloud - they don't look much higher than about 10000 -12000ft.
I'm used to Cb that produces thunder, only forming in otherwise clear skies.
Theae did form in clear skies (it was sunny an hour before the pics were taken), and they did produce lightning and hail to the north of London. The storms in the SW got up to about 26000ft.
Theae did form in clear skies (it was sunny an hour before the pics were taken), and they did produce lightning and hail to the north of London. The storms in the SW got up to about 26000ft.
I'm not doubting there was a thunderstorm, just saying they look like the clouds after a rain event.
The clouds in the SW were at 26000ft, but what do you think the height of those ones are
From the radar they appeared to be around 30-40km away, so somewhere between 15-20000ft
Maybe, but they look lower to me.
That's what I find interesting about weather though. If I saw those clouds here, I know that there would be no thunder, but in other parts of the world, they bring thunder.
Holy Crap. Bamboos are fried. TBH I thought they were green last summer and I don't see how this past winter did this. Maybe I didn't notice? Some others are burnt as well. Did the cold blast do it? That quick? Maybe they are just depleted with the soil? Is it normal and they just shed off old growth?
Mid 60s. Close enough. Is there a discussion around from a weather service that day or forecast? Anyway... seen some interesting comments lately on this matter..
Here's the radar at 15:30, 2 hours after I took the pictures. The precip rate was above 32mm/hour in the core of the storm.
Lightning strikes at 15:45. You can also see the early stages of the supercell, to the WNW of Exeter.
The storm eventually died out around 8pm, just north of Cardiff.
Found this on the Netweather forum, overshooting top seems to be pushing 9000m/30000ft.
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