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PHX Cooks, Flights Cancelled

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ShanwickOceanic (netAirspace FAA) 20 Jun 17, 11:38Post
As temperatures climb in Phoenix, Arizona, more than 40 flights have been cancelled - because it is too hot for the planes to fly.

The weather forecast for the US city suggests temperatures could reach 120F (49C) on Tuesday.

That is higher than the operating temperature of some planes.

Read more: http://www.bbc.com/news/world-us-canada-40339730

It "mostly affects CRJs", so it's not all bad news :)
Let him that hath understanding count the number of the beast:
For it is the number of a man; and its number is One hundred threescore and twelve.

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JLAmber (netAirspace ATC & Founding Member) 20 Jun 17, 11:54Post
Max. operating temperature for CRJ 'classic' models is 117F/47C (slightly lower than the beeb article states) so it would make sense that they're involved. That puny wing can't guarantee enough lift at high temperatures.

Interesting that all of PHX's temperature records have happened in the last two weeks of June, something that usually only occurs much closer to the equator.
A million great ideas...
mhodgson (ATC & Photo Quality Screener & Founding Member) 20 Jun 17, 11:58Post
When I was based in GYR we had a 45ºC cutoff for flights (might have been a bit lower) as the performance data for PA28s simply didn't go that high.
There's the right way, the wrong way and the railway.
Queso (netAirspace ATC Tower Chief & Founding Member) 20 Jun 17, 12:22Post
MAF was 111 last week (with 1% humidity), we're expecting similar this Friday. We've had stops like this too when it got up to 115-117 here.

It's been warm lately.
ADS-B aircraft flight data feeder for FlightRadar24.com, FlightAware.com, and South Plains Mode S Project.
Click Click D'oh (Photo Quality Screener & Founding Member) 20 Jun 17, 12:29Post
Why are CRJs even scheduled into PHX? 120 is not an unusual temperature there during the summer.
We sleep peacefully in our beds at night because rough men stand ready to do violence on our behalf
Queso (netAirspace ATC Tower Chief & Founding Member) 20 Jun 17, 12:43Post
Click Click D'oh wrote:Why are CRJs even scheduled into PHX? 120 is not an unusual temperature there during the summer.


Just for the purposes of trivia, I did a little research...

http://www.wrh.noaa.gov/psr/climate/extremeTemps.php


Average number of 110 °F+ days per year:
12 (All-time) 18 (1981-2010)

Greatest number of 110 °F+ days:
33 (2011)

Longest stretch of 110 °F+ days:
18 (12 Jun 1974 - 29 Jun 1974)

Top 5 Hottest Days:
1. 122 (26 Jun 1990)
2. 121 (28 Jul 1995)
3. 120 (25 Jun 1990)
4. 119 (29 Jun 2013)

So 120+ is not "common", but you're right, it's not "unusual", either. I can see why they would ordinarily run CRJs out of there. Same reasons some airlines run ATRs into cold climates with icing: statistics. {duck}
ADS-B aircraft flight data feeder for FlightRadar24.com, FlightAware.com, and South Plains Mode S Project.
Fumanchewd 21 Jun 17, 02:09Post
It was officially 119 today, tying for 4th hottest recorded. 120 is not common, in the summer 115 or less is typical with spikes up to 118 or so. And even then its usually in the afternoon only ( of course) so flight operations are only closed for a period where it is somewhat expected. Just like the coming sunrise in The Chronicles of Riddick. :)) We used to get excited towards the end of July and the beginning of August as we would get those cooling evening monsoons but they tend to stay up North now away from the hot air raising off the concrete from the huge city. It creates some of the worse turbulence in the summer... not pleasant.

Sucks for my kids, I usually take them for an hour walk each day but its too damn hot so we just go out to the mall, stores, etc. Can't wait for our trip to Europe this year, it will eat up all of hot August.
You don't need a weatherman to know which way the wind blows.
Norah9 13 Sep 17, 03:38Post
Flight is easily affected by weather. {boggled}

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