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A recent study pointed out that macroscopic dark matter (macros) traversingthrough the earth's atmosphere can give rise to hot and ionized channelssimilar to those associated with lightning leaders. The authors of the studyinvestigated the possibility that when such channels created by macros passthrough a thundercloud, lightning leaders may locked into these ionizedchannels creating lightning discharges with perfectly straight channels. Theysuggested the possibility of detecting such channels as a means of detectingthe passage of macros through the atmosphere. In this paper, we show thatmacros crossing the atmosphere under fair weather conditions could also giverise to mini lightning flashes with current amplitudes in the order of fewhundreds of Amperes. These mini lightning flashes would generate a thundersignature similar to or stronger than those of long laboratory sparks and theycould also be detected by optical means. As in the case of thunderstormassisted macro lightning, these mini-lightning flashes are also associated withstraight channels. Moreover, since the frequency of mini lightning flashes areabout three hundred times more frequent than the macro generated lightningflashes which were assisted by thunderstorms, they could be used as a means tolook for the paths of macroscopic dark matter crossing the atmosphere.

Could macroscopic dark matter (macros) give rise to mini-lightning flashes out of a blue sky without clouds?