We’ve been so inundated with readers’ photos of yesterday’s magnificent sunset that we’ve had to create another web story.
And this time, we have some scientific explanation for you from Dacorum’s resident weatherman, Brendan Jones from Tring.
Mr Jones said: “On Tuesday, the eastern side of the UK was cloudy with rain for much of the day.
“The west of the country, on the other hand, was dry and sunny. Our area was right on the divide between the two, so cloudy but mostly dry.
“As the sun started to set low in the western sky, it managed to “undercut” the cloud that was sitting over our area.
“In other words, there was a thin sliver of clear skies as we looked to the western horizon, and that’s what the sun managed to poke into just before setting.
“As this happened, it lit up the underside of the clouds sat over Aylesbury, the cloud that was ultimately the edge of the rain to our east.
“Many observers noticed strange “bulging” clouds, hanging downwards from the clouds and glowing bright red in the setting sun.
“These clouds, mostly associated with rain or storms, are called “mammatus”.
“It’s a little rude, but they’re name comes from the latin word for breasts, “mamma” and, given their appearance, people could probably see why.
“Mammatus aren’t really that rare but they’re far more noticeable when the low setting sun catches their shapes.”