If any of the hurricane ingredients are in short supply, so are hurricanes. No rain means no seedling cloud clusters leaving the West African coast. So we haven't had as many hurricanes as we used to. So they need all the weather information they can get. And you might not know that the storms are there until they blast onto land.
Satellite pictures can be off by many kilometers.
Joanne's husband worked at the National Hurricane Center in 1969 when Camille hit. But he didn't believe that. So he sent an Air Force airplane out into the storm. Some of them would have been killed if the center hadn't had the correct forecast. Once in the storm, instruments on the plane collect weather information like temperature, moisture in the air, and wind speed.