The featured chart displays the number of year to date Severe Thunderstorm and Tornado Watches issued by the Storm Prediction Center since 1997. The top panel displays the number issued nationwide, the middle panel shows the number that had any part of the initial watch outline overlap Iowa, and the bottom panel shows the percentage of watches that overlapped Iowa for that year. This year's total is a mere 52, which is the lowest found within the modern database. It is interesting to see each of the past five years show up in the least number of watches for the period.

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Tags:   spc   watch