Simplify the following text for a Grade 4 native English-speaking person.
Original: Hurricane Bertha passed Antigua and Barbuda later in the day as a category 1 storm , then passed across many of the other Leeward Islands . Its track shifted more to the north , and Bertha passed far enough from Puerto Rico that only tropical storm force winds were recorded there .
Simplified: On that same day it became Tropical Storm Bertha .