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B737900
Topic Author
Posts: 226
Joined: Fri Aug 20, 2010 10:44 pm

### Most And Fewest Diversions Due To Weather?

I've been watching some landings at LAX on YouTube and am not surprised that there are hardly ever any diversions or missed approaches due to weather. Got me thinking about two things: 1) Which airports see the fewest diversions due to weather and 2) Which airports have the most diversions due to weather? I'm sure it has to do with latitude!

Is there a database for this kind of info?
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johns624
Posts: 2719
Joined: Mon Jul 07, 2008 11:09 pm

### RE: Most And Fewest Diversions Due To Weather?

 Quoting B737900 (Thread starter):I'm sure it has to do with latitude!

Not always. It could be geography and weather patterns. ORD has many more diversions than DTW.

LittleFokker
Posts: 1289
Joined: Sat Sep 28, 2013 10:25 pm

### RE: Most And Fewest Diversions Due To Weather?

 Quoting B737900 (Thread starter):1) Which airports see the fewest diversions due to weather and 2) Which airports have the most diversions due to weather?

No perfect answer for this question. Weather patterns fluctuate year to year, and there are many type of weather that cause diversions. Snow, for example, doesn't automatically mean diversion. It depends on how much snow exists on the ground already, how intensely it's falling, how quickly the airport is able to keep runways plowed and treated, the time of day (arrival demand has peaks and valleys, so if you're arriving in a low arrival demand hour, you might get in when you wouldn't in a heavy demand hour). In the summertime, thunderstorms can shut down an airport, as those who frequently travel through IAH or ATL can attest to. Thunderstorms are very dynamic and hard to predict an exact level of impact to an airport.

One could also argue that a place like ASE has a high diversion rate, because if the winds are blowing in the wrong direction, a flight cannot operate in/out of there. High minimum airports that are prone to fog like SAN can also have a high diversion rate.

 Quoting B737900 (Thread starter): I'm sure it has to do with latitude!

Not really, for reasons I mentioned above. Has everything to do with airport capacity in bad weather vs demand.
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maxpower1954
Posts: 1067
Joined: Thu Sep 25, 2008 1:14 am

### RE: Most And Fewest Diversions Due To Weather?

I would say LAS and PHX are at the top of the low diversion rate. Neither airport even rates a CAT II ILS.

Posts: 1278
Joined: Sat Jun 26, 1999 9:42 am

### RE: Most And Fewest Diversions Due To Weather?

In the US HNL has to be at the top of the list for fewest diversions and is a major reason why HA is usually at the top of the list for fewest delays among DOT tracked carriers.
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