"Ever stared down the gaping eye of a Category 4 hurricane?"
In another post, the astronaut marveled at Florence's size - reportedly 500 miles across - writing that the storm "is so enormous, we could only capture her with a super wide angle lens".
"#HurricaneFlorence this morning with Cape Hatteras #NorthCarolina in the foreground", Arnold wrote this morning.
Another view from astronaut Alexander Gerst of the eye of Hurricane Florence, posted to Twitter on September 12, 2018.
"The crew of @Space_Station is thinking of those who will be affected", Arnold said in a tweet.
The National Hurricane Center forecasts additional strengthening for Florence before it reaches the coastline of North Carolina and SC early Friday, Sept. 14. For the Carolinas, the NHC predicts a "life-threatening storm surge and rainfall".
Cameras outside the space station captured several views of the storm at 8:10 a.m. Monday, according to NASA.
New video from NASA shows Hurricane Florence on its course toward the U.S. on Monday, September 10, as the National Weather Service upgraded the rapidly strengthening hurricane to Category 4 status.
Hurricane hunter aircraft also fly through the storm, taking data on wind speed to figure out exactly how intense Florence is at any given moment. Since reliable record-keeping began more than 150 years ago, North Carolina has only been hit by one Category 4 hurricane: Hazel, with 210 km/h winds in 1954.
Astronaut Alexander Gerst provides a view straight down into the eye of Hurricane Florence, headed toward the U.S. Southeast as of September 12, 2018.