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We present the results of 14 nights of \textit{I}-band photometric monitoringof the nearby brown dwarf binary, $\epsilon$ Indi Ba,Bb. Observations wereacquired over 2 months, and total close to 42 hours of coverage at a typicallyhigh cadence of 1.4 minutes. At a separation of just $0.7''$, we do not resolvethe individual components, and so effectively treat the binary as if it were asingle object. However, $\epsilon$ Indi Ba (spectral type T1) is the brightestknown T-type brown dwarf, and is expected to dominate the photometric signal.We typically find no strong variability associated with the target during eachindividual night of observing, but see significant changes in mean brightness -by as much as $0.10$ magnitudes - over the 2 months of the campaign. Thisstrong variation is apparent on a timescale of at least 2 days. We detect noclear periodic signature, which suggests we may be observing the T1 brown dwarfalmost pole-on, and the days-long variability in mean brightness is caused bychanges in the large-scale structure of the cloud coverage. Dynamic clouds willvery likely produce lightning, and complementary high cadence \textit{V}-bandand H\textit{$\alpha$} images were acquired to search for the emissionsignatures associated with stochastic "strikes." We report no positivedetections for the target in either of these passbands.

Large-scale changes of the cloud coverage in the $\epsilon$ Indi Ba,Bb system