I'll try to explain some of it, yet realize it is a supply and demand issue. I will use Jared as the example because he was the thread starter.
There are two major pipelines that originate in Houston and go across the south (Alabama included) to Georgia before heading north to New Jersey. These 2 lines carry gasolines and distillates (jet fuel / diesel) individually. Along the way, refineries and tank farms inject the various grades of gasolines and diesels into the respective batch in the pipeline. Also, product is sent to various locations along the way through smaller pipelines.
Now a good majority of the gasoline is what we call conventional (regular with nor oxygenates added) yet there are a lot of boutique gasolines also. A boutique gasoline is one that is made primarily for a specific area (thank you California) for which there are dozens. These boutique gasolines have a higher production cost due to the lower volumes.
Back to the refineries and tank farms. If there is a power disruption due to a hurricane, it will take longer for a refinery to get back on line. Also, various companies have standards for tank volume heights for hurricanes, meaning tanks may not be full of product. Also, there a various components that are injected into the gasoline when it is blended and these may be in short supply also. There are two specific refineries along the route that account for a majority of the production of gasoline (basically they are numbers 1 and 2 in the nation). One is in Port Arthur, Texas and the other is in Baton Rouge, Louisiana. Port Arthur took a major hit from the hurricane with major losses to the workers homes. It is a long and time consuming process to restart a refinery safely.
I won't try to get into the economics of why prices seem to rise several times a day. All I will say is that companies sell their product to jobbers who sell it to stations. And different regions will have greater fluctuation of prices due to the type of gasoline required.
One last note. During Hurricane Rita, the EPA relaxed gasoline restrictions in Houston (not sure of other areas) for a period of time in order to get product to the pump.
Hopefully this helps a little in understanding the dynamics of the distribution side of the industry. If you have questions, I will try to answer them as best I can. Good luck and be safe.