The most important thing that you need to have plenty of on hand during a hurricane or tropical storm is simply clean water. Clean water may be more difficult to obtain during these times than you might think, so you need to try and have plenty of it stocked up beforehand if you live in an area that is prone to having these serious storms. If you happen to run out before the storm is completely over, though, there are a few things that you can do to make sure that you have enough to last you.

For every person that will be with you during the storm, you should be saving at least one gallon for them per day for use.

An electricity generator that is powered by gas might be a good thing to have around, as well, since electricity tends to go out during hurricanes and tropical storms, affecting your ability to boil water for drinking. You can boil water on your stove for about 10 minutes or so and make it safe to drink as long as you filter out any sediment that might be in it first. Do not drink flood water, since this will likely have more in it than you can get rid of by simply boiling it.

If you do not have electricity, using chlorinated bleach to sanitize water is also a good idea. You only have to use a couple of drops for each gallon of water you want to sanitize. Be aware that you should only use regular chlorinated bleach for this process. Do not use lemon or any other scented bleach.

When you filter water out of your tap for boiling, you should pour this through a clean (white, if possible) cloth and let the water set until it is no longer cloudy. Do not under any circumstances drink water straight out of the tap after the storm has hit, since your water treatment plant could be contaminated. Do not drink water out of the tap that has not been boiled until your local government says that your tap water is safe to drink.

If you do not have electricity or bleach, then using some water purification tablets to sanitize your water is also an option. Purchase some of these at an outdoor supply store where hiking and camping supplies are.