Thunderstorms form when atmospheric instability increases, typically in mountainous regions where solar heating creates convection, and they dissipate when moving into stable, cooler plains terrain; this pattern explains why storms in Colorado are concentrated west of I-25 and dissipate as they move eastward.
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A few more thunderstorms on Wednesday before a drier end of the weekAdded:
[music] >> And now, your First Alert 5 Weather.
>> We were about 10° cooler today than yesterday, and that greatly reduced our risk of severe weather this afternoon.
There's still a few spots that have some storms, and I'll show you that in just a moment. Going through our almanac numbers, we started at 52 in the Springs, rose to 71, Pueblo started at 58, rose to 78.
Uh the day started with extra cloud cover because of how much moisture we have in the atmosphere, so that delayed our warming, and it also stabilized the atmosphere quite a bit. We need the heat in order for convection to happen if we don't have something like a cold front to naturally lift the air. And so, that's kind of what happened today. The plains were a lot cooler and more stable without those showers, but the mountains have seen more sunshine, and that instability rose this afternoon, and that's where the storms have formed this evening. Uh we're seeing these nice showers moving now out of Teller County and moving into the Tri-Lakes area, northern Colorado Springs. So, do expect these showers to continue their eastward progression uh before they rain themselves out as they head into more of the stable atmosphere into the plains.
I'm expecting maybe just some lightning and moderate rainfall.
We've had plenty of showers and storms generally west of I-25 in the Spanish Peaks region, and some of them could make it to I-25, but as I mentioned, the eastern plains are just so stable, these showers are going to lose their gusto as soon as they make their way off the hills, and you'll see that here in the future cast for the rest of this evening as showers still are ongoing in the mountain valleys. Once they move towards the interstate, they'll quickly lose their strength and dissipate. Overnight, we're going to keep the moisture in place and we're going to keep the clouds. So, it'll be overcast, even some areas of fog, like here in Colorado Springs. Uh temperatures tonight, 40s and 50s for us. And then by tomorrow afternoon, I am expecting us to be back to seasonable or slightly above average temperatures, 70s and 80s for highs. You add more heat, you add on the chances of thunderstorms. So, going into Wednesday.
Again, we start the day with the clouds, but we should see enough peaks in the cloud cover to rise our temperatures to those 70s and 80s. By the afternoon, storms will spark up initially in the mountains. They'll move towards I-25 through the mid-afternoon to evening.
And I do see enough instability in the Eastern Plains for a few showers to linger there through Wednesday night as well. And the storms could linger pretty late Wednesday, maybe by 10:00 they'll start to dissipate.
Our temperatures on Thursday are getting even warmer and we're starting to dry out. And we might see a few sparse showers, very isolated activity Thursday, but then Friday and Saturday, they are trending sunny and hot. Friday, lots of sunshine for us. If you've been craving that sun, look at the cloud cover percentage, maybe max 25%.
And so, the sun will return by the end of the week. We'll keep those isolated thunderstorm chances in the forecast this weekend on Sunday, but Saturday is trending dry. In Pueblo, an afternoon storm is possible for you tomorrow.
After that, we're really heating up into the 90s late week and into the weekend.
Heading into Cañon City now. Isolated storm chances the next couple of days.
And storm chances are kind of here and there into the weekend. Overall, better storm chances linger west of I-25 heading into the weekend. So, you'll see those in the forecast for the most part in William Park.
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