UPDATE 7:00 a.m. Tuesday: Hurricane Nicholas made landfall early Tuesday morning on the eastern part of the Matagorda Peninsula. It soon downgraded to a tropical storm.
WATCH: Meteorologist Justin Horne reports from the Texas coast as residents prepare for arrival of TS Nicholas
Latest Stats & Cone
Nicholas moved over the Houston/Galveston metro area early Tuesday morning. As of 7 AM Tuesday morning, Nicholas is weakening with wind speeds of 60 mph and is moving NNE at 8 mph.
Throughout Tuesday, Nicholas will move into Louisiana, bringing a high risk for flooding rains.
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Types of Tropical Systems
Meteorologist Sarah Spivey takes some time in the video below to explain the different types of tropical cyclones and the Saffir-Simpson scale -- which determines the category of a particular hurricane based on wind speeds.