Above is a twitter density mapping of mobile tweeting from Bangkok just a few days ago,
below is the current map.
But this only tells part of the story. Twitter encodes tweets location for things other than just a geo-tagge. And re-tweets from locations carry the original tweets location. So when you query twitter API for overall score for a location you get a much higher score:
Update: 25th of October afternoon local time we are starting to see a drop in overall tweeting coming from Bangkok which we assume is the impact of flooding on social life and infrastructure.