Colorado Summer Trends

by Steve Goddard

Summer 2009 in Breckenridge Colorado

Earlier, Anthony reported on a Stanford University report which forecast very hot summers for the four corner states. I found this particularly amusing, because we are having our second cold, rainy July in a row.

Looking at the long term summer trends, NCDC shows no trend in Colorado summer temperatures over the last 80 years. Last summer was the 14th coldest since 1930.

But it gets worse. The NCDC data above showing no trend has been tortured upwards to get to that point.

If we look at less tortured data (the USHCN “raw” data) we see a different story about Colorado temperatures. Below are all of the of Colorado USHCN station (RAW) maximum temperatures since 1930. As you can see, high temperatures have been declining in most of Colorado over the last 80 years, as CO2 has gone from 310 to 390 ppm. The correlation between CO2 and hot days in Colorado is negative, and any study which shows otherwise is deeply flawed.

http://cdiac.ornl.gov/epubs/ndp/ushcn/state_CO_mon.html

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DirkH
July 9, 2010 2:50 pm

I mean, you should be happy that you’ll have nice & cosy summers in the future in Colorado, (if we don’t act NOW!) so why complain about the modelists.

Jim G
July 9, 2010 2:51 pm

June was pretty cool here in WY this year as well. In my recollection, the coolest in 15 years. Sorry, I have no graphs available to post, real or adjusted. As Captain Renault from “Casablanca” was quoted as saying in a previous post, “I am shocked, shocked” that the CO numbers have been tampered with!

Henry chance
July 9, 2010 3:02 pm

The record in America is 134 degrees. 90 years ago?
I am sure this is why they force the models instead of actual readings.
It also seems wetter in Colorado the last decade.

Mac the Knife
July 9, 2010 3:08 pm

But that’s just weather…. er…uhmmm….80 years of weather!
};>)
Too Cool! Thanks again Steve!

latitude
July 9, 2010 3:15 pm

Henry, wasn’t there something called a heat storm – can’t remember exactly – in Calif in the 1800’s? It was somewhere around 134F too, again check that, it’s my old memory again.

July 9, 2010 3:15 pm

Related, but in the weather isn’t climate dept:
Two 2 days ago in Denver, high temp was 63, normal high 87 (24 deg below normal)

July 9, 2010 3:17 pm

Correction, high temp was 67, 20 deg below normal

R. de Haan
July 9, 2010 3:17 pm
DirkH
July 9, 2010 3:18 pm

Oh, and BTW, 36 deg C in Germany ATM, about 98 deg F, a bit hot, but i’m glad i’m not in Colorado 😉

July 9, 2010 3:21 pm

We used to count on the snow being gone from the high passes of the Colorado Rockies by July 1 and opening up the four wheel drive trails to the tops of the fourteeners. The sights from there was just out of this world.

otowi
July 9, 2010 3:23 pm

Colorado experienced a pretty serious drought recently and the past few years we seem to be coming out of it.

juanslayton
July 9, 2010 3:24 pm

“Below are all of the of Colorado USHCN station (RAW) maximum”
Missed a few, eg. Durango, Telluride…. Don’t know if it matters, you’ve got enough to make the point.

Breckite
July 9, 2010 3:37 pm

Steve, do you live in Breckenridge, too?
It snowed at the top of Hoosier Pass, nine miles south of Breckenridge, yesterday. Should it be snowing in July in 2010 if “global warming” is really occurring? Oh I forgot, with the warmists, A is non-A, therefore warming causes snow.
I’ve lived in Breckenridge since 2005, and we’ve had seven-month ski seasons for all of those five years. When Breckenridge closes in mid-April the snowpack is still building since we continue getting storms through May. I skied from early October to late May this past season.
Nearby Loveland Ski Area had its second-earliest opening ever on October 7, 2009 and Arapahoe Basin had its earliest opening ever on October 9, 2009 thanks to sustained early cold weather which enabled snowmaking operations. Since I moved to Breckenridge I’ve had so many great powder skiing days that I can’t remember all of them.
As for “summer” in Breck – what summer? We barely reach 72º at the peak of summer, and the temperature commonly drops into the upper 30s at night. We have cold rain, hail and thunderstorms almost every day. Don’t get caught above treeline in one of those! Yesterday I had to wear a winter jacket to work as cold thunderstorm charged through Breck in the late afternoon.
In three months, A-Basin and Loveland ski areas open again – but didn’t the warmists predict that by now ski areas would be suffering from “global warming?”

July 9, 2010 3:37 pm

Jim G
We drove up to Cheyenne on July 3 to buy and set off fireworks (anything fun is illegal in Colorado.) It got so cold the kids went to the car to warm up.

Al Gore
July 9, 2010 4:01 pm

Humph! You guys are no fun with all this cooling stuff. Maybe I can misconstrue things so that global cooling is caused by CO2…yeah….that’s the ticket! No where did I put George Soros’ phone number?

David, UK
July 9, 2010 4:07 pm

I’ve said it before, I’ll say it again: no matter how much we know that cold is generally bad, warm generally good, we should all be praying for the next little ice age to take hold sooner rather than later, because the damage our political elite is doing now far outweighs any harm threatened by a protracted cold period. Of course the Schneiders and the Manns will just call it Anthropogenic Global Cooling caused by aerosols (again), and Greenpeace volunteers will be spraying mountain tops with black paint – but somehow I don’t think that will wash. We’ll be colder, but we’ll be free.

DirkH
July 9, 2010 4:09 pm

Al Gore says:
July 9, 2010 at 4:01 pm
“Humph! You guys are no fun with all this cooling stuff. Maybe I can misconstrue things so that global cooling is caused by CO2…yeah….that’s the ticket! ”
No prob; CO2 in the stratosphere causes cooling as it radiates LWIR to space. (Can i have a million of the next 100 million you make for the tip?)

jack morrow
July 9, 2010 4:24 pm

I guess I should pack an extra warm shirt for my elk hunt in Sep. around Monarch Pass.

Dave Springer
July 9, 2010 4:24 pm

That looks like rotten snow on the mountains in the picture. It isn’t really cold this summer either. It’s called rotten cold. The cold rain and hail and thunderstorms, well, as you probably guessed those are rotten too.
And those so-called “rocky” mountain. Those rocks are rotten, buddy. By the year 2025, if mankind is still alive, they’re going to crumble and tumble into the Sea of Cortez. That’s not a typo. By the year 2050 the only skiing you’re going to be doing is jet skiing in tropical salt water in your backyard. When the south pole melts or whatever Mexico will be underwater and the Pacific ocean will reach all the way to Colorado or something like that. Bank on it. Enjoy that snow while it lasts because it’ll probably be the last snow anyone will see EVAH!

July 9, 2010 4:25 pm

juanslayton
Durango has a station but no data. I did miss ToHellURide, but it also shows a downwards trend.

July 9, 2010 4:26 pm

Breckite
No, I am a flatlander. ;^)

intrepid_wanders
July 9, 2010 4:27 pm

Steve,
It is “unseasonably cool” in most of the west. I still can not believe there were “freeze-warnings” in the Snake River Valley (Northwest) area in late June. We are just giving back to the east 😉 Amazing how that El Nino/Nina work…too bad it is so worthless to model.

July 9, 2010 4:32 pm

I rode home through pouring rain this afternoon and arrived cold and wet. Off to play soccer now in the puddles ….

Eric Anderson
July 9, 2010 4:52 pm

More from the weather (can you have weather for a whole month?) is not climate department:
Friends in Pocatello, Idaho report that May was the coldest on record (since 1939 when record keeping began in the area). I have a copy of the news report and can email it out if anyone keeps tabs on this sort of thing.
San Jose Mercury News (Bay Area, CA) reported that Silicon Valley May was on track for one of the coolest (I haven’t checked to see how the last couple of days of the month played out).

bikermailman
July 9, 2010 4:54 pm

I’m not in the Four Corners area, but the Panhandle of Texas is close…I understood our cool, wet summer last year, El Ninos do that to us. But this year? We (Lubbock area) haven’t hit 90 degrees in a couple of weeks. If not another drop of rain falls this month, it’ll be the fifth wettest July on record. No more for the whole year, and we’re four inches above the normal. For the year.
Regarding the above comment with the jeep trails, three years ago I hit the trails between Silverton and Telluride. At the first of July, they’d had to get bulldozers to clear the tops of the trails, so the Independence Day crowd would be able to get over them. Snow was ~15′ deep at the top.

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