Volgens een NOAA definitie (zie hieronder) gaat het bij die 'pulse' niet om een enkele stijgbeweging maar over de relatief korte duur dat de bui 'severe' effecten produceert:
"A thunderstorm within which a brief period (pulse) of strong updraft occurs, during and immediately after which the storm produces a short episode of severe weather. These storms generally are not tornado producers, but often produce large hail and/or damaging winds".
"A thunderstorm within which a brief period (pulse) of strong updraft occurs, during and immediately after which the storm produces a short episode of severe weather. These storms generally are not tornado producers, but often produce large hail and/or damaging winds".
Bericht laatst bijgewerkt: 09-04-2009 18:49
