Aviation weather thread

angeldelight · 18-03-2018 5:22pm

Husbands flight Frankfurt to Dublin cancelled with AL. Quite frustrating as there’s plenty of flights operating

Tenger · 19-03-2018 12:34am

angeldelight wrote: »

Husbands flight Frankfurt to Dublin cancelled with AL. Quite frustrating as there’s plenty of flights operating

I believe Frankfurt has a jetban. Meaning no flights after a certain time. EI may have cancelled to prevent their aircraft getting trapped overnight in Frankfurt.

Or it could be just bad luck that they prioritised another flight over your husbands.

JCX BXC · 19-03-2018 1:04am

Tenger wrote: »

Or it could be just bad luck that they prioritised another flight over your husbands.

I'd personally think this is more likely, apparently an A320 doing line training in Shannon was recalled to Dublin for operational reasons (aka they needed the aircraft).

Caranica · 19-03-2018 3:24am

Loads of flights cancelled in Gatwick tonight, we were due out at 9.15pm (EI) but took off around midnight and got into Dublin after 1. We were "lucky", the 7pm flight from Gatwick to Dublin was cancelled, I'm thinking it was because by the time the incoming aircraft landed (several hours late from Dublin), the 7pm flight was already delayed over 3 hours so it was more cost effective to cancel theirs? Deicing queue in Gatwick was over 3 hours long so we were blessed to get on an aircraft that had just arrived and didn't need it.

A lot of people sleeping in Dublin airport tonight

griffdaddy · 19-03-2018 11:54am

My 21.30 Ryanair flight from Gatwick to Dublin was cancelled last night, very frustrating as other flights were taking off and landing in Gatwick and Dublin. On the train to holyhead now. I presume I can claim back the hotel and train price? Pretty much every flight out of London to Dublin was booked up today

Tenger · 19-03-2018 1:42pm

Caranica wrote: »

..... Deicing queue in Gatwick was over 3 hours long so we were blessed to get on an aircraft that had just arrived and didn't need it. .....

Bloody hell. I cant remember Dublin ever being that bad.

Poochie05 · 19-03-2018 5:16pm

We were in a 1:30 min deicing queue at Dublin Airport yesterday afternoon until the pilot made the assessment that we didn't need it. Have to say he was great at keeping us informed on what was going on while we were all just sitting in our seats. Bonus was we got to see the rugby team arrive back while we were waiting.

Gaoth Laidir · 19-09-2018 8:57am

That's some windshear at Shannon this morning.

EINN WS WRNG 01 190700 VALID 190708/190908 WS IN APCH RWY24 REP AT 0708 B757 WS IN APCH RWY24 REP AT 0706 B757 ON APPROACH 1 MILE OUT +20KT AND -15KT=

Gaoth Laidir · 30-10-2018 10:43am

https://www.met.ie/what-are-mode-s-data-and-why-are-they-used-in-meteorology

martinsvi · 30-10-2018 11:36am

Gaoth Laidir wrote: »

https://www.met.ie/what-are-mode-s-data-and-why-are-they-used-in-meteorology

this is gold. Someone should pass this on to Ukrainian/Belorussian/Russian ATC, as they are frequently asking for the wx information aloft

Gaoth Laidir · 07-11-2018 8:14am

What a complex TAF. Five windshifts in the next 24 hours.

TAF EIDW 070500Z 0706/0806 32007KT 9999 SCT010 BKN025
BECMG 0706/0709 28011KT
TEMPO 0706/0712 4000 RA BKN010
PROB40 TEMPO 0706/0711 3000 BKN006
TEMPO 0712/0714 4000 -RA BKN010
BECMG 0712/0715 25013KT
TEMPO 0712/0718 27018G28KT
TEMPO 0714/0717 -SHRA SCT018CB
BECMG 0721/0723 21008KT
BECMG 0800/0802 14012KT
TEMPO 0801/0804 -SHRA SCT012 SCT018CB
BECMG 0803/0805 21016KT

Compare it to the 36-hour one for Praia (Cape Verde)...

TAF GVNP 070500Z 0706/0812 03013KT 9999 FEW015

smurfjed · 09-11-2018 6:37am

@gaoth laidir..... have you seen any indications that the ICTZ has moved further north this year? We are battling thunderstorms in Saudi on a daily basis, massive things up to 40000+, this certainly isn't a common annual event, but for the last couple of years it appears to be getting worse.

Gone are the days of turning on the autopilot and falling asleep.

Brennus335 · 09-11-2018 8:55am

smurfjed wrote: »

@gaoth laidir..... have you seen any indications that the ICTZ has moved further north this year? We are battling thunderstorms in Saudi on a daily basis, massive things up to 40000+, this certainly isn't a common annual event, but for the last couple of years it appears to be getting worse.

Gone are the days of turning on the autopilot and falling asleep.

I've seen a few of those this year over Saudi.
There's still the annual squall lines over the Gulf, which tend to be much larger. And then throw in the hassles of coordinating a deviation with Bahrain, Iranian Air Defence, and Tehran.... things get messy.

Gaoth Laidir · 15-12-2018 8:37am

smurfjed wrote: »

@gaoth laidir..... have you seen any indications that the ICTZ has moved further north this year? We are battling thunderstorms in Saudi on a daily basis, massive things up to 40000+, this certainly isn't a common annual event, but for the last couple of years it appears to be getting worse.

Gone are the days of turning on the autopilot and falling asleep.

I'm not sure what the reason could be. Possibly the particular ENSO/MJO combination, which can have effects at that latitude.

Gaoth Laidir · 15-12-2018 8:39am

I see Met Éireann's briefing now contains pseudo metars from all the stations (Athenry, Dunsany, etc.) not just the synoptic ones. I even see a SPECI from Custume Barracks in Athlone this morning!

SPECI EIAC 150722Z AUTO 13017G30KT 9999 -RA BKN013/// OVC019/// 09/07 Q0996=

Nijmegen · 18-01-2019 9:44am

I wonder what effect the Australian heatwave is having on aviation? Nothing reported widely that I’ve seen yet but they’re pretty close to the temperatures that caused trouble in Phoenix recently. https://www.theguardian.com/australia-news/2019/jan/18/australia-heatwave-sydneys-west-to-hit-45c-after-week-of-extreme-weather

L1011 · 18-01-2019 10:31am

Someone who is awake enough to do the calculations can see what variance in performance the 1000ft or so that PHX is higher than the main Australian airports. One issue with PHX in the past was that the performance charts for some aircraft didn't go high enough, which has since been rectified.

Nijmegen · 18-01-2019 1:07pm

L1011 wrote: »

Someone who is awake enough to do the calculations can see what variance in performance the 1000ft or so that PHX is higher than the main Australian airports. One issue with PHX in the past was that the performance charts for some aircraft didn't go high enough, which has since been rectified.

Ah, I didn’t cop that as the difference, thank you.

smurfjed · 18-01-2019 6:49pm

Some Airbus Embraer Bombardier Douglas aircraft only had an environmental envelope that went to ISA+35 while Boeing used 39.5, so this resulted in limitations, I think that at this stage all of them have started using ISA+39

Gaoth Laidir · 15-02-2019 8:40am

An interesting insight into the reasoning of an aviation forecaster as he/she writes the TAFs for the Houston/Galveston area. Was the "handcuff" comment put in there because it was Valentine's Day, I wonder!

Beyond a FEW025 at IAH, most of the hints of an oncoming slide in flight conditions tonight have only materialized well to our east. High cirrus has hung tough, and as long as it does so, it appears that will hold degradation in conditions off. Still, that hint of MVFR at IAH indicates that this will be more of a delay, so I don't abandon the development of low clouds and/or fog just yet. I have tempered the intensity, keeping things more in the MVFR/IFR range, and only threatening LIFR or worse with sea fog at GLS. Should see a return to VFR towards mid-day as fog dissipates and clouds scatter.

Hint at approaching weak boundary by shifting winds late at the northern terminals, but not much confidence in where the boundary will stall out. This will have significant impacts on the 12Z and later TAFs, so have chosen largely to punt on that in order to not handcuff later shifts.

Gaoth Laidir · 19-09-2019 8:02am

Try landing at Bermuda airport during Hurricane Humberto last night.

"Callsign 123, wind two six zero, seventy, gust greater than ninety nine knots...cleared to land..."

SPECI TXKF 182331Z 26070GP99KT 0550 R12/0600N -SHRA BLPY OVC009TCU 22/21 Q0980 RMK TCU ALQDS=

NH2013 · 12-01-2020 8:43pm

TAF EIDW 121700Z 1218/1318 21008KT 9999 SCT018
BECMG 1222/1224 22013G23KT
BECMG 1303/1305 19015G30KT
BECMG 1307/1309 17026G42KT
TEMPO 1311/1317 4000 RA BKN008
BECMG 1313/1315 22025G55KT
BECMG 1315/1317 22024G40KT

Looks like we could be in for a very windy day in Dublin tomorrow, with that 220/25G55 between 13:00-15:00 looks likely airport operations may have to be suspended for a couple hours, that wind 60 degrees off both 28 and 16 gives a 48 knot crosswind component for both, well outside typical aircraft limits. And a BECMG as well for that wind, not even a TEMPO.

Long delays likely earlier in the day with RWY 16 in use, sure to be plenty of go-arounds and diversions.

Board Walker · 12-01-2020 9:51pm

I Wonder if my 4pm ORK-LHR will go ahead.

BZ · 08-02-2020 7:33pm

Tomorrow morning showing gusts of 60knots at the majority of Irish airports between 6am and 10am. Could lead to some pretty challenging conditions.

Gaoth Laidir · 09-02-2020 11:44am

EIDW WS WRNG 02 VALID 090919/091119 MOD WS IN APCH RWY28 REP AT 0920 b737800 ps 30kt at 1000ft 3mls out =

weisses · 09-02-2020 4:16pm

KLM flew a 747 back over the Atlantic faster then the speed of sound ...That is some jet stream

Gaoth Laidir · 09-02-2020 4:27pm

weisses wrote: »

KLM flew a 747 back over the Atlantic faster then the speed of sound ...That is some jet stream

But groundspeed, not airspeed. It was not supersonic, as I've seen some people claiming. Such groundspeeds are not that uncommon.

Chris_5339762 · 09-02-2020 5:27pm

That said, there are a few mad newspaper articles popping up, they are breaking the subsonic records at the moment.

PinOnTheRight · 09-02-2020 5:34pm

Chris_5339762 wrote: »

That said, there are a few mad newspaper articles popping up, they are breaking the subsonic records at the moment.

BA 747 JFK-LHR 4hrs56mins. Virgin 787 same route 4hrs 57 mins. Just a long Canaries

deconduo · 09-02-2020 6:20pm

PinOnTheRight wrote: »

BA 747 JFK-LHR 4hrs56mins. Virgin 787 same route 4hrs 57 mins. Just a long Canaries

https://www.rte.ie/news/business/2020/0209/1114198-ba-record-fast-flight/

Great photo from RTE of the 747 :pac:

Tenger · 09-02-2020 6:54pm

EI104 last night/this morning touched down at 0336. Scheduled arrival onstand is 0455.

Gaoth Laidir · 09-02-2020 8:19pm

deconduo wrote: »

https://www.rte.ie/news/business/2020/0209/1114198-ba-record-fast-flight/

Great photo from RTE of the 747 :pac:

Jesus, journalists are some thick ****ers alright.

Tenzor07 · 09-02-2020 9:17pm

weisses wrote: »

KLM flew a 747 back over the Atlantic faster then the speed of sound ...That is some jet stream

I read that the 747 was traveling at a very high average speed, reaching its top speed of 825 mph at 35,000ft at one point.

The 747 definitely isn't designed to break mach 1, at least not for more than a couple of seconds, maybe minutes..

ldeayton · 09-02-2020 9:30pm

I live near LHR and been tracking the flights on frightradar 24 today. This morning the inbound BA from Houston(777) made a couple of attempts and held over Kent for a period before eventually diverting...to Frankfurt.

The Qantas flight outbound to Perth strangely also orbited over Kent after departure from LHR and then returned.

Gaoth Laidir · 09-02-2020 9:40pm

Tenzor07 wrote: »

I read that the 747 was traveling at a very high average speed, reaching its top speed of 825 mph at 35,000ft at one point.

The 747 definitely isn't designed to break mach 1, at least not for more than a couple of seconds, maybe minutes..

It was nowhere near Mach 1. It was 825 mph groundspeed, not airspeed.

ldeayton wrote: »

I live near LHR and been tracking the flights on frightradar 24 today. This morning the inbound BA from Houston(777) made a couple of attempts and held over Kent for a period before eventually diverting...to Frankfurt.

The Qantas flight outbound to Perth strangely also orbited over Kent after departure from LHR and then returned.

I believe it had a tailstrike on takeoff.

Laphroaig52 · 10-02-2020 12:34am

PinOnTheRight wrote: »

BA 747 JFK-LHR 4hrs56mins. Virgin 787 same route 4hrs 57 mins. Just a long Canaries

But Why?

Presumably Heathrow ATC weren't one bit impressed with these lads showing up 90 minutes early. I thought Heathrow was running to strict slots...

Why didn't they just put the brakes on over the water and save some petrol? Greta would have been impressed at that.

smurfjed · 10-02-2020 8:04am

Why didn't they just put the brakes on over the water and save some petrol?

these days most airliners fly using ECON speed, this is a calculated speed based on various factors to allow the flight be operated in the most economical manner possible. So Greta should be happy with ALL flights

trellheim · 10-02-2020 11:33am

Predictions for tomorrow ? just windy or cancellations en-masse ?

martinsvi · 10-02-2020 11:57am

Laphroaig52 wrote: »

But Why?

Presumably Heathrow ATC weren't one bit impressed with these lads showing up 90 minutes early. I thought Heathrow was running to strict slots...

Why didn't they just put the brakes on over the water and save some petrol? Greta would have been impressed at that.

aircraft optimum operating cost is a fine balance between fuel costs, maintenance/wear and tear costs and whatever else is planned for the given air frame later on in the day. Luckily people in charge of making these calculations, unlike Greta, haven't skipped school and they know what they are doing.

Basically flying slower can mean that you will save some fuel but at the same time you are keeping aircraft airborne longer, your engines are spinning longer etc, meaning the next heavy maintenance will need to be done sooner - that is a massive cost. Then you also need to think about the situation in LHR - possibly some aircraft might need to divert, some will be delayed.. it is wise to bring in any capacity back to base as soon as you can, just in case you need to swap out some aircraft to ensure flights leave on time.

goingnowhere · 10-02-2020 12:55pm

The only heavy jet to go truly supersonic was the DC8 https://www.airspacemag.com/history-of-flight/i-was-there-when-the-dc-8-went-supersonic-27846699/

NH2013 · 10-02-2020 2:33pm

goingnowhere wrote: »

The only heavy jet to go truly supersonic was the DC8 https://www.airspacemag.com/history-of-flight/i-was-there-when-the-dc-8-went-supersonic-27846699/

I believe the Convair 990A also exceeded Mach 1 during flight testing.

NH2013 · 19-08-2020 12:44pm

Very strong winds tonight forcast for Cork, Status red warning just issued, wonder if there'll be any flights arriving in at that time, a very unfavourable direction for both runways in Cork.

Gusts of up to 75kts (139kmph) forecast which are technically hurricane force winds (gusts >64kts).

TAF EICK 191100Z
1912/2012 05013KT 4000 BR BKN005
TEMPO 1912/1920 1800 BKN003
BECMG 1912/1914 09010KT
PROB30 TEMPO 1912/1917 0700 FG BKN002
BECMG 1914/1916 17010KT
BECMG 1917/1919 14018G30KT
BECMG 1920/1922 20035G60KT
TEMPO 1920/1924 5000 RA BKN008
TEMPO 1921/1923 22040G75KT
BECMG 1923/2001 21025G45KT
BECMG 2001/2003 20025G40KT
TEMPO 2003/2012 4000 SHRA SCT010 SCT020CB

Gaoth Laidir · 05-09-2022 1:55pm

Ireland-shaped weather area outlined beside Ireland in today's SigWx. 😀

Aviation weather thread

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