This may or may not be the correct birth time for Rowling (though she does indeed look and act like a Scorpio rising), but even disregarding that entirely you have a remarkable, heavyweight horoscope here. Saturn rules the whole operation, the handle of a bucket-pattern chart, but itself in Pisces the Neptune-ruled sign of fantasy, so one could expect this kind of approach to life would rule her personality.

That Saturn is opposed to a huge, dark stellium of Pluto, Uranus, Moon, Venus, and Mercury all in Virgo, adding the endless gothic details which flesh out the fantasy world which she creates. It has similarities to her predecessor, J. R. Tolkien, whose bucket chart is swung by a Neptune-Pluto conjunction, but his features three planets in the first degrees of their signs (Saturn, Mercury, and Moon), making him logically more the originator. This pattern is interrupted by a square of Jupiter to Saturn and Moon, which can make for some repetitiveness and a tendency toward the overblown. In a children’s book, of course, that really works for her.

Neptune, planet of fantasy, is as might be expected trine the Saturn bucket handle, so it all fits together smoothly. You couldn’t look for a better chart for a dark fantasy writer, and when you add that happy Leo Sun, you get one for kids, not something more adult and personal like Anne Rice. That one big taste of fire high in the chart is what keeps the take positive and prevents it from becoming too deep and depressing, which could otherwise easily happen with this combination.

Current events: The first Harry Potter book came out just as her progressed Mercury (writing) arrived at her MC (fame) and her progressed Mars (work, action) came to her natal Ascendant, along with her progressed Moon to her natal Neptune (dreams come true). The stage was firmly set for a launch, but how big it was to become no one could guess, considering the book had been turned down by nearly every publisher in town. But hey, that happened to the Beatles, too. When it’s time, it’s time, and you take the ride you’re given. Currently, she’s at progressed Full Moon, logically marking the fulfillment of her Harry Potter journey, after which she’ll have to regroup and take a new direction. When will that happen? It could be a while, with transiting Saturn just now getting to her Virgo stellium. She’s going to have lots of work to do to sort it out.