By JUDSON JONES Hurricane Polo exploded from a weak tropical storm into a Category 5 dynamo in less than a day, putting western Mexico on alert. Although it dropped Wednesday to the upper reaches of Category 4, forecasters said they expect it to remain at or near Category 5 strength for the next few days. On Wednesday morning, Polo turned northwest and was expected to generally move that way over the next couple of days along the coast as it remains offshore. What you should know: — Hurricane…
