shot. pedram javaheri in the international weather center. the rains are important because when more rain comes in it floods into the cave raising the water levels, causing a real problem for these teens. >> absolutely. and the next couple of days we can see more rainfall over the next three days than we had seen over the previous 16 days combined. that's why this is becoming a very serious situation over the next couple of days aced on the shift in the weather pattern we're expecting. and of course you can take a look from the 23rd of june the amount of rain that had fallen each and every day the massive lull we saw from about the 2nd of july all the way until about the 7th and in the past 24 or so hours some rain has come in. of course in david's live shot we've seen some rain over the past several hours as well. the pattern shift here is pretty dramatic going from tuesday into wednesday. each and every single afternoon brings with it rainfall from around, say, noon all the way into the evening hours. this is a prime sketup of the monsoon season for this time of year. of course you take a look at the totals. how about 17 millimiters, 23