The maximum rate of meteors expected to be visible is around 10 per hour (ZHR). However, this assumes a perfectly dark sky and that the radiant of the meteor shower is directly overhead. In practice, the number of meteors you are likely to see is lower than this . (via In-The-Sky.org)
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Earlier Event: April 19
Full Moon
Later Event: May 2
(New York Only) Jupiter Joe's Sidewalk Astronomy