IEM Daily Feature
Thursday, 09 October 2008

Rainy days after a rainy day

Posted: 09 Oct 2008 06:19 AM


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Based on 1951-2008 data for COOP sites in Iowa
The featured box and whisker plot shows the distribution of rainfall chances for days after an initial rainy day followed by a dry day (if shown, day 1 would appear as 0 on this chart). The plot is an attempt to answer the question of how long to wait for the next rainfall after an event. Day 2 appears to stand out as a drier day than the rest with no clear signal for the rest of the days. So it rained on Tuesday and was dry on Wednesday, so we can expect today to probably be dry as well. In reality, our rainfall chances appear to hold off until this weekend.

Voting:
Good = 15
Bad = 17