Hurricane Erin was a Category 4 storm Monday morning and is expected to retain major hurricane status through the middle of the week.

Hurricane Erin on Tuesday remained a major hurricane as headed north in the Atlantic prompting coastal advisories for Florida while the National Hurricane Center kept track of two tropical waves

Here's a quick, easy-to-read look on the latest about Hurricane Erin, including what Florida residents should know.

What are the chances of two new systems forming in the wake of Hurricane Erin? Here’s what the so-called spaghetti models are showing for possible tracks.

The Atlantic basin includes the northern Atlantic Ocean, Caribbean Sea and Gulf of America, as the Gulf of Mexico is now known in the U.S. per an order from President Trump. NOAA and the National Hurricane Center are now using Gulf of America on its maps and in its advisories.

Hurricane- and tropical-storm-force winds now extend up to 80 and 230 nautical miles from the eye, respectively. Erin’s eyewall has also grown and is now about 30 nautical miles in diameter, according to the National Hurricane Center.

Hurricane Erin is moving east of the U.S. coast as a major storm and will bring strong waves and rip currents to Florida's east coast – and it comes as the National Hurricane Center is eyeing two more tropical waves in the Atlantic.

This wave is so new that the hurricane center has yet to dub it an "invest," a technical term that kicks off heightened scrutiny and allows global hurricane models to pick up the system and begin issuing estimated forecast tracks.