https://www.youtube.com/watch?v=NcL3LuAT1xE
Este es del tornado di Taranto el 28/11/2012. No se queda atrás del de Dolo y Mira y fué clasificado EF2-EF3, curioso caso.
es que los tornados se clasifican en base a los daños observados en superficie. Si en el momento de máxima intensidad se encuentran en zonas despobladas, no hay elementos para decidir la calsificación. Por ejemplo, el monstruo del El Reno de 31/05/2013, con el diametro más grande nunca observado (2.5 km) ha sido clasificado como EF3, a pesar de medidas efectuadas con el radar Doppler de vientos a 480 km/h, justo por esta razón: en el momento de máxima intensidad afortunadamente estaba en zonas despobladas, y los únicos daños observados en zonas habitadas se referían al tornado en fase decreciente.
https://en.wikipedia.org/wiki/2013_El_Reno_tornado#Intensity The University of Oklahoma's RaXPol mobile Doppler weather radar, positioned at a nearby overpass, measured winds preliminarily analyzed as in excess of 296 mph (476 km/h). These winds are considered the second-highest ever measured worldwide, just shy of the 301 mph (484 km/h) recorded during the 1999 Bridge Creek–Moore tornado.[19][20]
...
n August 30, the National Weather Service office in Norman once again revised the intensity of the El Reno tornado, downgrading it from an EF5 to an EF3. Keli Pirtle, a Public Affairs worker at the National Oceanic and Atmospheric Administration, stated that, "despite the radar-measured wind speeds, the survey team did not find damage that would support a rating higher than EF3. While the wind measurements from the mobile radars are considered reliable, NWS policy for determining EF-ratings is based on surveys of ground damage."[18] The lack of EF5 damage was likely a result of the rural nature of the area, as the sub-vortices that contained the EF5 wind speeds did not impact any structures.[25] Despite this, the practicality of the downgrade to EF3 has been disputed by some meteorologists.[26]
aunque hay debate respecto a no utilizar el doppler (cuando disponible) para la clasificación
Dr. Greg Forbes, the severe weather expert at The Weather Channel has mixed opinions about the latest rating.
My own feeling on the El Reno tornado rating is that it should be left at the EF-5 intensity, using the Doppler radar data. While not every tornado can be measured that way, I don’t think that we should overlook available data. One concern, though, is about how rapidly tornado winds decrease near the ground due to friction – and that seems to vary from one tornado to another. So having measured tornado winds several hundred feet above ground does not guarantee that we know what the speeds are at roof-top level.
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