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This paper presents a general description of severe thunderstorm episodes detected during the last two years (2015–2016) in the most active lightning regions in Colombia and Venezuela. Hourly and seasonal occurrence characteristics, strokes rates, duration and orographic patterns are described.
This paper presents statistical results about the lightning incidence on power transmission systems in Colombia, based on a three-years failure record of very sensitive power transmission lines and the LINET lightning detection network. Both, failure modes and lightning detection performance was studied. More than 95% of lightning-caused failures were correctly matched, in time and location, with...
Lightning activity on the Colombian mountains, where the altitude varies from 0 to more than 5000MSL, is studied based on VLF/LF lightning detection data and using a 2012–2013 dataset. The influence of altitude is observed by evaluating cloud-to-ground lightning incidence at different altitude intervals. The relationship between ground flash density and altitude gradient vectors is studied. Results...
This paper presents a methodology for thunderstorm warning alarming using electric field measurements and lightning location data under mountainous conditions in Medellín - Colombia. The methodology is used to set warning criteria for preventing human and sensitive systems risks and damages.
Electrostatic field measurements obtained in Bogotá-Colombia during thunderstorm episodes in November (common raining season due to the intertropical confluence zone over central Colombia) were used to study the performance of an isolated electric field sensor and analyze its most important operational characteristics. Distances from each flash to the studied sensor were obtained by using the Colombian...
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