Connect and get the inside scoop on Airline Companies

Welcome to Airline Pilot Forums - Connect and get the inside scoop on Airline Companies

If this is your first visit, be sure to check out the FAQ. Join our community today and start interacting with existing members. Registration is fast, simple and absolutely free.


User Tag List

Post Reply
 
Thread Tools Search this Thread
Old 11-02-2012, 11:33 AM   #1  
New Hire
Thread Starter
 
Joined APC: Nov 2012
Posts: 5
Default Temperature At Altitudes

Hi folks, I am new to the forum and just joined cause I noticed the depth of aviation knowledge here.

I have a question.
YEARS ago I used to fly right seat with a grizzly old retired Air Force pilot and he had the easiest way in the world to guess temperature at different altitudes. And he was usually pretty close. I have been trying to remember his little method for weeks now and I can't remember it to save my life!

It was real simple, any ideas?
jetlag887 is offline  
Old 11-02-2012, 11:47 AM   #2  
Gets Weekends Off
 
captain152's Avatar
 
Joined APC: Oct 2008
Posts: 1,252
Default

I usually look at the screen in front of me

In all seriousness it's pretty difficult without looking at maps or knowing weather systems in the area. Inversions can put a damper in accurate predictions.

If it's a nice day just subtract 2 degrees/thousand feet from the ground temperature and it should be pretty close
captain152 is offline  
Old 11-02-2012, 11:51 AM   #3  
Gets Weekends Off
 
rthompsonjr's Avatar
 
Joined APC: Jul 2007
Position: Former Lear F/O
Posts: 178
Default

Flight level times 2, subtract from 15 will give you the ISA temp (roughly) for that altitude.

Example: FL 200 x 2 = 40 15-40= -25
rthompsonjr is offline  
Old 11-06-2012, 05:04 AM   #4  
New Hire
Thread Starter
 
Joined APC: Nov 2012
Posts: 5
Default

Thanks guys, I appreciate it!
jetlag887 is offline  
Old 11-09-2012, 11:09 AM   #5  
Line Holder
 
GlobalEx's Avatar
 
Joined APC: Nov 2012
Position: Global Express
Posts: 82
Default

Standard lapse, 2 degrees per thousand feet, start at 15 and subtract from there.
GlobalEx is offline  
Old 11-09-2012, 06:22 PM   #6  
Gets Weekends Off
 
JamesNoBrakes's Avatar
 
Joined APC: Nov 2011
Position: Volleyball Player
Posts: 3,445
Default

There was a special warning today in Alaska for a mass of air colder than -65c aloft
JamesNoBrakes is offline  
Old 12-04-2012, 06:36 AM   #7  
Line Holder
 
GlobalEx's Avatar
 
Joined APC: Nov 2012
Position: Global Express
Posts: 82
Default

Quote:
Originally Posted by JamesNoBrakes View Post
There was a special warning today in Alaska for a mass of air colder than -65c aloft
I have seen as low as -75C. That was up at 510, but still cold!
GlobalEx is offline  
 
 
 

 
Post Reply
 



Thread Tools Search this Thread
Search this Thread:

Advanced Search


Related Topics
Thread Thread Starter Forum Replies Last Post
MVA and minimum altitudes nocnik Flight Schools and Training 5 02-09-2011 05:24 PM
Temperature Aloft Winged Wheeler Hangar Talk 3 12-09-2008 11:32 AM
More BA-38 info. joel payne Foreign 6 02-19-2008 11:17 AM
Cruising Altitudes jsfBoat Flight Schools and Training 4 07-02-2007 06:53 PM
Minimum Altitudes for IFR Operations Bascuela Flight Schools and Training 1 11-15-2006 05:22 PM


All times are GMT -8. The time now is 01:05 PM.