      APOD: 2017 September 10 - Swirling Around the Eye of Hurricane Irma

                         Astronomy Picture of the Day

    Discover the cosmos! [1] Each day a different image or photograph of our
 fascinating universe is featured, along with a brief explanation written by a
                           professional astronomer.

                              2017 September 10
                  Swirling Around the Eye of Hurricane Irma
          Video Credit: NASA [2] , GOES-16 Satellite [3] , SPoRT [4]

Explanation: Why does a hurricane have an eye at its center? No one is yet
sure. What happens in and around a hurricane's eye is well documented, though.
Warm air rises around the eye's edges, cools, swirls, and spreads out over the
large storm, sinking primarily at the far edges. Inside the low-pressure eye
[5] , air also sinks and warms -- which causes evaporation [6] , calm, and
clearing -- sunlight might even stream through. Just at the eye's edge [7]  is
a towering eyewall [8] , the area of the highest winds. It is particularly
dangerous to go outside when the tranquil eye [9]  passes over because you are
soon to experience, again, the storm [10] 's violent eyewall. Featured [11]
is one of the most dramatic video [12] s yet taken of an eye and rotating
eyewall. The time-lapse video [13]  was taken from space by NASA's GOES-16
satellite [14] last week over one of the most powerful tropical cyclones [15]
in recorded history: Hurricane Irma [16] . Hurricanes can be extremely
dangerous [17]  and their perils are not [18] (link)confined to the storm's
center.

   Latest Images: Hurricanes Irma, Jose, and Katia [19]  Tomorrow's picture:
                            approaching saturn [20]

-------------------------------------------------------------------------------
< [21] | Archive [22] | Submissions [23] | Index [24] | Search [25] | Calendar
  [26] | RSS [27] | Education [28] | About APOD [29] | Discuss [30] | > [31]
-------------------------------------------------------------------------------

    Authors & editors: Robert Nemiroff [32] (MTU [33] ) & Jerry Bonnell [34]
                                  (UMCP [35] )
          NASA Official:  Phillip Newman Specific rights apply [36] .
              NASA Web Privacy Policy and Important Notices [37]
              A service of: ASD [38]  at NASA [39]  / GSFC [40]
                           & Michigan Tech. U. [41]
----------
Site notes:
  [1] archivepix.html
  [2] https://www.nasa.gov/
  [3] http://www.goes-r.gov/
  [4] https://weather.msfc.nasa.gov/sport/
  [5] https://en.wikipedia.org/wiki/Eye_(cyclone)
  [6] https://www.youtube.com/watch?v=BHmUx0ylg-A
  [7] ap161009.html
  [8] https://www.youtube.com/watch?v=eT5K6FR_eVs
  [9] https://www.livescience.com/15805-calm-hurricane-eye.html
  [10]
http://media3.s-nbcnews.com/i/msnbc/Components/Photos/060516/
060516_towergraphic_bcol_11a.jpg
  [11] https://weather.msfc.nasa.gov/sport/
  [12]
https://wattsupwiththat.com/2017/09/06/
the-most-fantastic-eyewall-video-of-a-hurricane-ive-ever-seen-irma/amp/
  [13] https://twitter.com/NASA_SPoRT/status/905169228000583681
  [14] http://www.goes-r.gov/
  [15] https://en.wikipedia.org/wiki/List_of_the_most_intense_tropical_cyclones
  [16] https://en.wikipedia.org/wiki/Hurricane_Irma
  [17] https://www.youtube.com/watch?v=dA5qYrboTUE
  [18] http://www.nhc.noaa.gov/surge/
  [19] https://www.nasa.gov/mission_pages/hurricanes/main/index.html
  [20] ap170911.html
  [21] ap170909.html
  [22] archivepix.html
  [23] lib/apsubmit2015.html
  [24] lib/aptree.html
  [25] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [26] calendar/allyears.html
  [27] /apod.rss
  [28] lib/edlinks.html
  [29] lib/about_apod.html
  [30] http://asterisk.apod.com/discuss_apod.php?date=170910
  [31] ap170911.html
  [32] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [33] http://www.phy.mtu.edu/
  [34] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [35] http://www.astro.umd.edu/
  [36] lib/about_apod.html#srapply
  [37] https://www.nasa.gov/about/highlights/HP_Privacy.html
  [38] https://astrophysics.gsfc.nasa.gov/
  [39] https://www.nasa.gov/
  [40] https://www.nasa.gov/centers/goddard/
  [41] http://www.mtu.edu/
