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Satellite images showing the formation of Hurricane Katrina. Watch how the storm looks red (warm) until it makes landfall.

You know of course, that water is somewhat special. Those hydrogen bonds keep water’s boiling point abnormally high for its size. It also has a high vaporization energy:

H_{2}O\;(\ell)\rightarrow H_{2}O\;(s);\;\Delta H=44\;kJ/mol

(\Delta H is the enthalpy change – just another way to talk about energy changes.) This has important implications for people who live along coastal regions of the southeastern U.S., the Gulf of Mexico and in theCaribbean at this time of year.

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