The IDF just posted this tweet a few minutes ago, explaining that they have confirmed a rocket fired from Gaza has hit Hadera, which is 62 miles away:
We can now confirm that a rocket fired from the Gaza Strip hit the city of Hadera, which is 100 km (62 miles) away from Gaza
— IDF (@IDFSpokesperson) July 8, 2014
Here’s a quick map I made showing the distance, which is north of Tel Aviv:
Here’s a 2012 map from Israel showing the threat from Gaza. When comparing to the above map, you’ll notice Herzeliya is still quite south of Hadera.