Daily 30-Day Rain and Dry Days
(updated August 7, 2008)
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This graphic contains 4 images. The upper left image is the number of days, during the last 30 days, in which at least 1 mm of rain fell. That is, a 'rain day' was defined as a day in which the rainfall amount was greater than or equal to 1 mm. The upper right image is the maximum number of consecutive dry days in the past 30 days. That is, the length of the longest dry spell in the past 30 days, where a 'dry day' was defined as a day in which the rainfall amount was less than 1 mm. The lower left image is the total accumulated rainfall amount over the past 30 days. The lower right image is the number of days since a 'rain day'. That is, the number of days since the last 1 mm of rain was recorded for a day. The input data for each day of a 30-day cycle is the daily TRMM 3B42RT rainfall as provided by NASA.
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