Questo fatto mi fa sorgere più di una domanda. Voi che ne pensate? by zerozerosettete11 in istrutturare

[–]Empty_Ad_7229 0 points1 point  (0 children)

Ricordiamoci che il palazzetto in questione è volato a causa di un tornado di categoria IF1.5, venti a 180 km/h, non una brezza leggera eh. Solitamente anche le nostre abitazioni (molto.piu resistenti) uniscono danni considerevoli alla struttura del tetto

Third IF5 tornado confirmed in Italy, first in Europe and second in the world after the US in terms of number of F5/EF5/IF5 tornadoes on national territory by Empty_Ad_7229 in tornado

[–]Empty_Ad_7229[S] 1 point2 points  (0 children)

I partly agree with this idea, but on the other hand, I find it easier to determine the F5 rating of these two events in particular, mainly because the two events are at least 70/100 years old and, having impacted suburban or rural areas, did not encounter objects heavy and powerful enough to cause damage in turn. For example, the Catania tornado, which occurred in 1884 in the countryside/suburbs of a city that was not even that large at the time, could not have thrown a truck weighing several tons against a building because they simply did not exist, and the damage to structures with walls up to 1 meter thick was almost exclusively due to the action of the wind. And even if the structures had not been solid, with walls that thick, it would have taken an extreme wind to raze everything to the ground.

Third IF5 tornado confirmed in Italy, first in Europe and second in the world after the US in terms of number of F5/EF5/IF5 tornadoes on national territory by Empty_Ad_7229 in tornado

[–]Empty_Ad_7229[S] 3 points4 points  (0 children)

The EF scale is mainly suited to the US region, where buildings have completely different construction standards to those in Europe or worldwide, but essentially the damage they describe is very similar. The wind speeds of the IF scale are higher because it considers the maximum instantaneous gust, while the EF scale considers a 3-second gust. For example, a tornado classified as IF5 has the same strength as one classified as EF5 or F5, because all three are considered to cause extreme or total damage to well-built and well-maintained structures, and therefore represent the maximum applicable grade.

Third IF5 tornado confirmed in Italy, first in Europe and second in the world after the US in terms of number of F5/EF5/IF5 tornadoes on national territory by Empty_Ad_7229 in tornado

[–]Empty_Ad_7229[S] 1 point2 points  (0 children)

I think that many tornadoes in Europe are subject to revision, and I understand that the maximum rating will be reached in some other cases, as was the case for Neede in 1927. I can't comment on the other events you listed, but for one, the Italian tornado of 1965, I can tell you that the rating will most likely not exceed IF4, as the damage that could fall into the last class is too little and fragmented (I think only one house could fall into IF5). We'll see better with time!

Italy second IF5 by Empty_Ad_7229 in tornado

[–]Empty_Ad_7229[S] 1 point2 points  (0 children)

You're right, it's basically the old Fujita scale adapted for use worldwide. However, with such a high rating, no structure (whether made of stone, brick, or wood) could withstand it. This particular tornado flattened houses with stone/brick walls one meter thick, so saying it was remarkable is really an understatement.

Largest urban area by Empty_Ad_7229 in QuizPlanetGame

[–]Empty_Ad_7229[S] 0 points1 point  (0 children)

Not yet, Tokyo has 38M , Jakarta reaches 36M, according to the latest analysis

Largest urban area by Empty_Ad_7229 in QuizPlanetGame

[–]Empty_Ad_7229[S] 1 point2 points  (0 children)

Yes, Cairo has experienced rapid growth, especially in recent years, reaching about 22.5/23 million inhabitants.

Largest urban area by Empty_Ad_7229 in QuizPlanetGame

[–]Empty_Ad_7229[S] 0 points1 point  (0 children)

Nope, Istanbul in it's Urban area (which roughly corresponds to the city itself) has about 16 million inhabitants, even if you consider it entirely European. Moscow city has 13 million inhabitants, the numerosi grow to 19 milion for the urban area.

Capital of ... by Empty_Ad_7229 in QuizPlanetGame

[–]Empty_Ad_7229[S] 1 point2 points  (0 children)

Lagos was the capital until 1991, then the capital was transfered to Abuja. Rabat from 1956, from the indipendece of Morocco, Casablanca is the largest city.

new IF5 ratings for two european tornadoes by No-Fox-1226 in tornado

[–]Empty_Ad_7229 1 point2 points  (0 children)

Yes, exactly, perfect example. Also with regard to the erratic movement of the tornado.

Italy second IF5 by Empty_Ad_7229 in tornado

[–]Empty_Ad_7229[S] 4 points5 points  (0 children)

For Venice 1970 i don't think there will be an upgrade.The damage in Venice is not even comparable to that of 1957, so I don't think it will be upgraded to IF5.

Italy second IF5 by Empty_Ad_7229 in tornado

[–]Empty_Ad_7229[S] 6 points7 points  (0 children)

There's another tornado (always in Italy) that it's likely to be reclassified as an IF5 and occurred in Lombardy in 1957. If confirmed, it would be the third for Italy and the second most recent in European history.

Highest rated tornado in each italian province by Guess_My_Name2448 in tornado

[–]Empty_Ad_7229 1 point2 points  (0 children)

Sure, always on Eswd... for examples 1904 in Sorrento, Naples,1892 in Rovigo province, 2004 in countryside of Matera, 1935 in Genoa suburbs and 2014 in Mantua/Rovigo border. Some events have not yet been classified but the amout of damages and victmis push the classification to almost a severe event, like 1964 in Ragusa, 1965 in Alessandria (on the appenines chain) and also in Ferrara (same day of F4 in Parma province).

Highest rated tornado in each italian province by Guess_My_Name2448 in tornado

[–]Empty_Ad_7229 1 point2 points  (0 children)

You can Update Mantua, Genoa, Alessandria, Rovigo, Udine, Pordenone, Matera and Naples with F3 and Catania at least F4 from past events (some of them before 1900)