Skip to main content

View Diary: Tropical Storms Hanna & Ike [UPDATED 2:15PM EDT] (104 comments)

Comment Preferences

  •  maybe we will catch a break (6+ / 0-)

    at least with Hanna. I know to stay on guard, but it looks as if she won't make it to South Florida in any shape to do much damage.

    But how did she drift so far south to Hispanola? Those countries need a break, for real. This is ridiculous. Is there any climatological factor that attracts storms to this area?

    -7.38, -5.23 "Though the storm may be raging, and the billows tossing high, Lord I feel like going on."

    by CocoaLove on Wed Sep 03, 2008 at 06:38:27 AM PDT

    •  Pattern (7+ / 0-)

      In general, the pattern this year is favorable for those northern Caribbean storm tracks.  We have a strong, but northward displaced Atlantic ridge.  A ridge is an area of high pressure that the storms move around.  It spins clockwise and is a semi-permanent feature centered in the central Atlantic.  So, to the south of it (i.e., in the tropics) storms move westward.  If this ridge is positioned normally, but abnormally strong, storms will be pushed through the central or southern Caribbean.  If the ridge is weak, storms will turn north earlier.  This ridge is north, but a bit strong... keeping already north storms heading east.  In fact, Ike is positioned such that in a normal year he'd be almost certain to go out to sea.  And while he could escape out to sea, it is unlikely and will be a close call if he does.

      That said, Hanna's southward motion towards Hispaniola is somewhat unrelated to this.  She was pushed down there, and sheared, by flow around the back side of a trough (opposite of a ridge... so it spins counterclockwise - so, on the southern, back side, the winds are out of the northwest - that's the direction from which Hanna was sheared).

Subscribe or Donate to support Daily Kos.

  • Recommended (154)
  • Community (61)
  • Environment (36)
  • Culture (34)
  • Memorial Day (31)
  • Republicans (31)
  • 2016 (28)
  • Elections (26)
  • Civil Rights (25)
  • Bernie Sanders (25)
  • Science (23)
  • Media (22)
  • Climate Change (22)
  • Education (22)
  • Labor (21)
  • Spam (21)
  • GOP (20)
  • Law (20)
  • Rescued (19)
  • Trans-Pacific Partnership (16)
  • Click here for the mobile view of the site