Supercell thunderstorm over fields. A supercell thunderstorm is a severe long-lived storm within which the wind speed and direction changes with height. This produces a strong rotating updraft of warm air,known as a mesocyclone,and a separate downdraft of cold air. This was the most prolific supercell thunderstorm of 2009. The storm was over 30 miles (48 kilometres) wide and persisted for 9 hours. Photographed near Valentine,Nebraska,USA,on 13th July 2009 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Hill, Roger |
Bildgröße: | 5616 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |