The “Julia Child” of kids’ hands-on science
What is a hurricane eye?
Hurricanes are circular storms so the wind blows around in a circle. The eye is the center of a hurricane. If a circular storm doesn’t have an eye, it is not a hurricane—it’s a tropical storm. The eye is surrounded by a ring of clouds called the eyewall. Within the eye, there is a calm area that is cloudless all the way up to space. The winds are strongest just at the inner edge of the eyewall, which is composed of violent thunderstorms with strong updrafts and downdrafts. The hurricane pinwheels out from the eyewall as spiral bands of wind and rain, which stretch for miles. When a hurricane’s eye passes over land, the storm suddenly stops and the sun comes out. But the relief is short-lived as the other side of the storm soon slams into the area.
How do Hurricane Hunters help us?
Hurricane Hunters fly into the eye of hurricanes that are heading towards our shores to help predict where the storm will make landfall. On every mission they must find the center of the storm at least twice and at most four times over a period of several hours because the change in position of the center of the eye tells us the direction the storm is moving and how fast it is moving. They also drop packages called dropsondes that contain measuring instruments for air pressure, humidity, and wind speed at the eyewall. These measurements tell us the destructive power of the storm or its “category.” During a hurricane season (from June 1 to November 30) the Hurricane Hunters and their fleet of ten airplanes can get data on three storms, twice a day. So flying into a hurricane’s eye is pretty routine for them.
Is it dangerous?
The planes can easily handle changes in air pressure and wind speeds that create “bumps” and it can be pretty bumpy going through the eyewall. But, in more than sixty years there have been only four accidents. All on board agree that the view of the eyewall from inside the eye is worth it! The plane has transported them inside nature’s most magnificent amphitheater.
The following video will give you a taste of what is looks like as you approach an eyewall. It is filmed from a plane penetrating Hurricane Katrina.
Did watching that Hurricane Hunter video make you feel a little queasy? Vicki Cobb tells you how that could happen in one of her latest books, Your Body Battles a Stomachache. The other titles in this Millbrook Press series are Your Body Battles a Cold, A Broken Bone, A Skinned Knee, A Cavity, and An Earache.
Vicki Cobb is a member of iNK's Authors on Call and is available for classroom programs through Field Trip Zoom, a terrific technology that requires only a computer, wifi, and a webcam. Click here to find out more.
Next week we hear from Sarah Albee, Jim Whiting, Kerrie Hollihan, Steve Swinburne and Dorothy Hinshaw Patent. Subjects range from art to geography to a holiday to vultures to the last of the great tortoises. Stay tuned.