Earlier today, we experienced temperatures of 31C and it was clear about 2 hours before I went out and noticed the following clouds directly above my house - the entire sky either has this or is very grey.
There is a constant background of thunder and distant lightning is observed - the wind is picking up a bit, though still a breeze. No rain at this stage.
这些是mammatus云。这表明云底的不稳定(通过负浮力、对流混合、夹带或其他来源)导致了球状乳房状结构。就像你的情况一样,它们经常与强对流有关。< / p >