Welcome, Guest. Please login or register.
Did you miss your activation email?
August 30, 2014, 06:16:41 PM
Home Help Login Register      
News: LiveATC.net Flyers Released!  Please click here to download & print a copy and be sure to post at an airport near you!


+  LiveATC Discussion Forums
|-+  Air Traffic Monitoring
| |-+  Listener Forum (Moderators: dave, RonR)
| | |-+  40 knot wind shear just reported on KBUF freq (4/4)
« previous next »
Pages: [1] 2 Go Down Print
Author Topic: 40 knot wind shear just reported on KBUF freq (4/4)  (Read 9365 times)
KSYR-pjr
Hero Member
*****
Offline Offline

Posts: 1722



« on: April 04, 2007, 10:14:31 AM »

Wow, just heard a report of a plus or minus 40 knot wind shear at 700 feet on the KBUF (Buffalo, NY) frequency.  There is a sharp cold front that just moved through the area and winds are forecast to increase sharply over the next few hours.  A 40 knot change in relative wind at such a low altitude is enough to cause problems with landing or departing aircraft.

I have never heard of such a large wind shear that wasn't associated with a passing thunderstorm before.
Logged

Regards, Peter
ATC Feed:  Syracuse (KSYR), NY
dan9125
Full Member
***
Offline Offline

Posts: 235



WWW
« Reply #1 on: April 04, 2007, 12:31:18 PM »

Those conditions normally only happen when your on final approach on Monday mornings!

 Dan
Logged

KSYR-pjr
Hero Member
*****
Offline Offline

Posts: 1722



« Reply #2 on: April 04, 2007, 01:05:46 PM »

Ha...  Actually, the last three weeks I have been driving to Buffalo as the Bonanza has been grounded for its annual inspection, or what I call "AMU Roulette."   (AMU=aviation monetary unit, or 1.0 AMU=$1k).  Every year we spin the wheel and see what Lady Luck delivers.
Logged

Regards, Peter
ATC Feed:  Syracuse (KSYR), NY
Greg01
Full Member
***
Offline Offline

Posts: 242


« Reply #3 on: April 04, 2007, 03:58:57 PM »

I was up in the tower at BUF the Friday night back in December where we were clocking "regular" gusts up to 64 knots with sustained winds in the 45-55 knot range! Boy that tower really moves...hang on for dear life! 

Greg
Logged
dan9125
Full Member
***
Offline Offline

Posts: 235



WWW
« Reply #4 on: April 04, 2007, 04:22:22 PM »

Greg,
  I have a tower question. Sometimes in the backround while the controller is talking I hear a two-toned high pitch warning type sound any idea what that might be?

   Thanks, Dan
Logged

Greg01
Full Member
***
Offline Offline

Posts: 242


« Reply #5 on: April 04, 2007, 04:39:34 PM »

LA and CA.

LA - Low altitude alert. If the aircraft is on approach, the radar controller is required to call the tower on the landline and let him know of it. Sometimes, this can be inaccurate because the radar measures the LA based on rate of descent. If there is a high rate of descent, the LA warning will go off (and you'll see a red LA next to the aircraft along with that alarm).

CA - collision alert. This will only occur (at least in my experiences) when two returns break the separation minimums. However, a primary target will not trigger anything. The aircraft must have the transponder on (even if it isn't squawking mode C). Of course, the little red "CA" will show up next to the two returns.

These alarms can be silenced, so when the controller advises "Maintain visual separation," and/or uses the "converging rule" and the aircraft get close, they can silence the alarms so they don't become annoying.

Hope this helps. I'm LH can chime in with much more accuracy than I.

Greg
Logged
davolijj
Hero Member
*****
Offline Offline

Posts: 548


MMAC ARSR OKC


« Reply #6 on: April 04, 2007, 10:36:09 PM »

CA - collision alert....

I believe it actually stands for conflict alert, which sounds a little less abrupt.  And it's been a while since I had my STARS training but I believe the CA on STARS is a monotone while the LA alert is dualtoned.
Logged

Regards
JD
KSYR-pjr
Hero Member
*****
Offline Offline

Posts: 1722



« Reply #7 on: April 04, 2007, 10:44:03 PM »

And it's been a while since I had my STARS training but I believe the CA on STARS is a monotone while the LA alert is dualtoned.

I hear that alert all the time when talking to or monitoring Syracuse ATC. 

EDIT:  (sorry, very poor quoting on my part)  I was specifically responding to the dual-toned alert.  That is the one I hear in the background all the time.
« Last Edit: April 05, 2007, 05:27:01 PM by KSYR-pjr » Logged

Regards, Peter
ATC Feed:  Syracuse (KSYR), NY
Greg01
Full Member
***
Offline Offline

Posts: 242


« Reply #8 on: April 05, 2007, 02:27:02 PM »

Thanks JD, you are correct. My mind was way ahead of my hands. It is indeed Conflict alert. We pilots see it as a collision alert.

Again, my apologies, I wasn't being too specific. The CA is monotone and the LA is dualtone.

Thanks,
Greg
Logged
DashDriver
Newbie
*
Offline Offline

Posts: 11


« Reply #9 on: April 07, 2007, 11:21:14 AM »

I flew into BUF that day.  We had a 20 knot gain followed by a 20 kt loss on short final.

Airplane broke and we were stuck there for a few hours.  Wind picked up quite a bit while we were there.  If you heard the rejected takeoff in the late AM, that was yours truly.
Logged
Greg01
Full Member
***
Offline Offline

Posts: 242


« Reply #10 on: April 07, 2007, 12:02:02 PM »

Dash,

I take it you fly for Piedmont?

Wink

Greg
Logged
w0x0f
Sr. Member
****
Offline Offline

Posts: 322



« Reply #11 on: April 07, 2007, 01:10:19 PM »

And it's been a while since I had my STARS training but I believe the CA on STARS is a monotone while the LA alert is dualtoned.

JD,

It's good to know that you still have your head in the terminal game. 

Some of you may hear controllers whistling the Sabre Dance in the background while the CA alarm goes off.  It has the same beat.   

w0x0f
Logged
DashDriver
Newbie
*
Offline Offline

Posts: 11


« Reply #12 on: April 08, 2007, 09:24:12 AM »

Yeah, I work for Piedmont.
Logged
dan9125
Full Member
***
Offline Offline

Posts: 235



WWW
« Reply #13 on: April 08, 2007, 11:15:47 AM »

I love the Sabre Dance song! I'm not sure the alarm I was hearing sounded like it but thats ok, thanks for the youtube!
 Go Sabres!

 Dan (KBUF)
Logged

w0x0f
Sr. Member
****
Offline Offline

Posts: 322



« Reply #14 on: April 08, 2007, 01:17:20 PM »

I love the Sabre Dance song! I'm not sure the alarm I was hearing sounded like it but thats ok, thanks for the youtube!
 

The CA is the Sabre Dance.  You were hearing the LA which is the dual-toned alarm that JD mentioned.

w0x0f
Logged
Pages: [1] 2 Go Up Print 
« previous next »
Jump to:  


Login with username, password and session length

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2011, Simple Machines Valid XHTML 1.0! Valid CSS!