tacoman25

A major storm impacted parts of the Denver metro earlier this month (DEN got 1.43" on 8/10), but this monsoon season has definitely been a disappointment overall. That said, this upcoming pattern looks amazing. 0z Euro showed sub-80 temps here all the way through day 10, with several sub-70 days. Basically unheard of for August in Denver. And plenty of rain.

I've lived in CO for nearly 20 years. Moving here had little to do with the weather, but I do enjoy the frequent snowfall.

There are certainly different ways to look at this. Back in 2012, there was a lot of talk of a tipping point having been reached in the Arctic, and some thought we'd be seeing virtually ice-free summers by now.

And yet we've seen an overall decline in violent crime since the 1980/90s, despite warming temps.

What are the top 3 highest since 2007?

Who in this thread is denying climate change? Your argument here makes little sense to me. Properly sited sensors have reliable, correct high temps, and that's why there's scientific standards for the ones that are used for NOAA/NWS data. Low temps, on the other hand, vary more wildly based on location and that can't be fixed through better siting. But it does make sense that sensors that have a long period of record in a single location that has seen the least amount of changes around it are going to provide the most reliable temperature record.

I haven't seen anyone in this thread denying global warming or claiming warming is UHI-driven.

Right, no one is disputing it's been hot in Flagstaff. It just hasn't warmed as much as Phoenix, as those stats clearly show. It's a distinct difference. - Two of Flagstaff's top 3 warmest summers happened more than 20 years ago. Meanwhile, those same two summers are tied for 6th hottest in Phoenix, and their three hottest are the last three summers. - Flagstaff has 5 summers among their 10 warmest that occurred 2007 or earlier. Phoenix has 2. - Flagstaff has a total of 7 20th century summers on their list. Phoenix has 3. - Phoenix's hottest summer is more than 4 degrees warmer than their hottest 20th century summer. Flagstaff's is less than 2 degrees warmer.

The last time Phoenix had an August with average low temps below their long term mean was 1990. Flagstaff did it in 2017, 2016, and 2014. Along with a bunch of other years since 1990.

All trendlines aside, in practical, very recent terms: - Phoenix was 3 degrees above their long term average in July 2025. Flagstaff was exactly average. - Phoenix was a ridiculous 9 degrees above their long term mean in July 2023. That same month, Flagstaff was about 5 degrees above theirs. - Phoenix hasn't had a June below their long term mean since 2009. Flagstaff's most recent was 2023. - Phoenix's hottest year on record was 2024. Flagstaff's was 1981.

That's 30 years. And obviously the exact starting point matters...depending on if you start in 1970, 1980, 1995, 2005, 2010 you'll get differing trend numbers. But again, July/August is the primary monsoon season (rarely does it start until late June/early July, sometimes not until mid July). Including June makes about as much since if not less than including September. If I go as far back as the data allows (1933) and plot JJAS avg temp trend for Flagstaff, it's .3F/decade. For Phoenix, it's twice as much with .6F/decade. Same trend for JJA if you prefer that.

The monsoon season is primarily July/August. When you compare the trend the past 20 years for Phoenix and Flagstaff for those two months avg temps, you get the following. Phoenix: +1.3F/decade Flagstaff: +.9F/decade That's a 44% difference, quite significant.

1. I get that, but it's not like the monsoon season in Phoenix exists in a bubble that doesn't affect other cities in the region. 2. Sure, but the warming part is clearly exaggerated in Phoenix by other factors. 3. This completely ignores the reality of increased UHI in Phoenix metro, particularly around the airport area. Why do you think PHX is such an outlier compared to other AZ cities? This is the most sensible answer.

Just an FYI...it's not wise to make generalized statements based primarily on one station's data. Due to a major increase in UHI in Phoenix, that station has a much larger temperature increase trend compared to places that haven't seen that much UHI increase. PHX has seen their mean temperature go up nearly 3.5 degrees since the 1960s. Meanwhile, Flagstaff (which has seen virtually no increase in UHI) has only warmed about a degree over that same period, much more in line with global temp trends. Tucson has seen 1.5 degrees warming. So that chart, while accurate for Phoenix, is certainly exaggerated for the region overall.

Mother Nature can be such a buzz kill.

Runaway hyperbole feedbacks!

The honest answer is that it's an apples to oranges comparison, and no one knows for sure how extent from the first half of the 20th century compares to the satellite era. The graph above is one educated guess, but far from the only estimate. This post goes into great detail on the difficulties of comparing sea ice extent measurements back then to now: https://judithcurry.com/2013/04/10/historic-variations-in-arctic-sea-ice-part-ii-1920-1950/ You may not agree with the conclusion, but the reasoning is thorough and well laid out. What we do know for sure is that the Arctic has gone through cyclical warming and cooling periods that are much more variable than lower latitudes. In the 1980s, the Arctic was in one of its cooler phases, and given the amount of AGW to that point and total variation that the Arctic climate sees naturally, it's not at all unreasonable to assume that some of the warm phases of the Arctic earlier in the 20th century were probably warmer than the final cool phase of the 20th century. Ice extent typically follows temperature, to a certain degree.

This is somewhat true, but it really depends on what part of the 20th century you're talking about. There's evidence that the 1980s probably had close to or higher extent than the 1940s-1950s, and perhaps the 1920s as well.

One words posts are lame. Repeating the same one word post is even more lame. I've been here long enough, you should know I'm not a troll. Sometimes I just like to bring a slightly different perspective to the echo chamber. Sometimes that includes the lighter side of things.

Is joking illegal here?

Setting up for record gains in December!

"Climate flickering"...like the climate is about to shut off? Worth pointing out, this ridiculous warmth in the Arctic is also resulting in one of the coldest falls on record for much of Eurasia. Temps in parts of Russia are expected to 40-50 degrees below normal this week, with another record-breaking cold wave on the way for Asia next week.

I didn't call anyone out specifically. That wasn't the intent. Just the inconsistence in the general message. It was not based on an assumption, but very clear memories of people claiming the summer min is by far the most important thing to track.

I've reiterated it twice for you. Three times is not necessary. No, sorry I wasn't clear with that post. I cited "record fastest freeze", but I wasn't the one claiming it was significant. Same with high points in the fall. And I never dismissed volume decline. Make more sense now? I promise, if you and others get rid of your assumptions about me, it will make things easier to understand. Welcome to CO, by the way! I didn't know you'd moved here.

Sorry man, you were just reading too much into what I said. Made a couple of false assumptions. And you can say nobody claimed that, but I absolutely know they did. Defend yourself sure, but it's silly to say no one here said that. And I'm not a liar.