<p>If you want to judge when the next major hurricane is about to make landfall, Flickr might be just as useful as atmospheric pressure.</p><p>A just-published study found that uploads to the photo-sharing website during the days prior to and after Superstorm Sandy's landfall last year strongly corresponded with changes to the atmospheric pressure during the same time period.</p><p>Graphs from the study show similar trajectories for both the number of Flickr photos mentioning "hurricane," "Sandy" or "Hurricane Sandy" and shifts in the atmospheric pressure as the storm made landfall.</p><p>The researchers from the University of Warwick, Boston University and University College London said they found a "striking correlation" between the two measures.</p><p><a href="http://www.philly.com/philly/news/Study_Flickr_predicted_Superstorm_Sandys_landfall.html">Keep reading...</a></p>