"strong lightning" is a correct and usable phrase in written English.
It can be used to describe a particularly powerful lightning strike, usually of a thunderstorm. For example: "The room was lit up by the strong lightning that flashed outside the window."
The simultaneous occurrence of a strong tweek sferic having ELF (<1.8 kHz) frequency components suggests that this sferic may be produced by causative strong lightning or by TLEs, probably red sprite associated with strong lightning.
The theoretical model reported by Marshall and Inan (2010) has shown that strong lightning EMPs can lead to ionization at elve-altitudes (~80 90 km) which can yield measurable VLF perturbations.
Red sprites, the enigmatic electrical discharges that sometimes occur high over thunderstorms in the wake of strong lightning strikes in the lower atmosphere, can emit low-frequency radio waves, a new analysis suggests.
These processes, associated with large high-altitude non-linear currents, may strongly enhance the weight of the ULF-ELF spectrum in the lightning transients in the ionosphere, and the IAR excitation by strong lightning discharge (Sukhorukov and Stubbe, 1997).
The very low-frequency (VLF, 3 30 kHz) radio waves generated by strong lightning discharges and navigational transmitters propagate through the waveguide bounded by the Earth's surface and the lower ionosphere (D-region), known as the Earth ionosphere waveguide (EIWG) with relatively low attenuation of about 2 3 dB/Mm (Davies 1990, p. 367).
The simultaneous occurrence and same recovery times on all transmitter levels, but with different changes in amplitude, indicates that these early/fast events were produced by localized ionization due to strong lightning with a large charge moment change located overhead, or very near the receiver.
From the modeling results on the lower ionospheric modification by lightning EMPs, Rodger et al. (2001) have shown both electron density enhancement and reductions, depending upon the relative occurrence of weak or strong lightnings.
The occurrence of daytime early/fast events (Figs. 3 and 4) indicates the strong possibility of the occurrence of daytime TLEs, or electron density perturbations, associated with strong lightnings.
However, shorter recovery times of daytime early VLF events indicate that these events are generated by electron density perturbations at lower altitudes, where relaxation times are faster, associated with the daytime sprites occurring at lower altitudes (∼50 km) compared with most of the nighttime sprites which occur at higher altitudes, or with the strong EMPs, associated with strong lightnings.
The VLF perturbations associated with strong lightnings also occur when the TRGCPs are in the daylight but they can be easily distinguished from solar flare associated perturbations on the basis of their low level (0.2 to 0.5 dB) and short durations (10 to 30 s) (Kumar et al. 2008; Kumar and Kumar 2013).
The Chidori was created by Kakashi Hatake during his childhood, gaining its name when the channeling of strong lightning-based chakra in one's hand produces a sound reminiscent of chirping birds.
