July 26, 2020

Hurricane Douglas Hits Hawaii

If you were planning on an early morning cruise around Oahu and Kauai, you may want to reschedule.... Hurricane Douglas is now buffeting the central and western islands of the Aloha State.

Hurricane Douglas this afternoon near Hawaii

Hurricanes hitting Hawaii are unusual but not rare.  Here is a map of hurricanes that came within 75 miles of the islands since 1950.  Kauai has been the hurricane hotspot for the islands.  One reason that hurricanes are fairly rare in Hawaii is because the water temperatures are often too cool.

The current forecast track takes the storm across Kauai tonight and to the west on Monday.  So the action is going on now and during the next 18 hr.

Fortunately, this is a small system, and only a Category 1 storm, with winds reaching 85 mph.  But tropical storm winds (greater than or equal to 39 mph) will hit Kauai and northern part of Oahu during the next day.

The maximum winds so far (below) have only gotten to roughly 35 mph at official observing stations, but higher speeds are expected.

The storm is forcing some large 8-9 meter waves, as predicted tonight by the NOAA/NWS wavewatch3 model:

The other issue is rain, and some locations will probably get 5-10 inches, with the potential for flash flooding.   A recent infrared satellite image does not show a well-defined eye (see below)

But the eye is quite evident in the NOAA/NWS radars (see below).  You can see the rainbands circling the rain-free eye.  Kauai in particular will get a piece of the heavy rain in the encircling rainbands.

Finally, I should note that the U.S. global model--the GFS--did an excellent job with this storm.  Here is the 66 hr forecast valid Monday at 5 AM PDT.  Not bad.   The kind of forecast that allows people to prepare.


  1. it will not have any impact on tourism since one needs to quarantine two weeks to visit Hawaii due to Covid 19.

  2. Looks like any tropical force winds are on the north side of the storm.No strong winds on Oahu currently;Douglas may end up being a bust for that island.
    However, Kahului on Maui did get 0.28" precip the last two days,which ended a record 80 day stretch without measurable rain!

  3. I remember being in Oahu for my first visit to Hawaii in 1982 during Thanksgiving week when Hurricane IWA hit. It did considerable damage. People were mostly oblivious to the warnings. But it really hit Kauai badly. As I recall, a number of hotels were severely damaged on Kauai, which Hurricane Iniki did the same thing to 10 years later. Iniki was the worst hurricane to hit Hawaii ever.

  4. Cliff,

    There goes my escape plan! Just kidding although I would like to think there is a paradise vacation in my future--albeit distant future.


Please make sure your comments are civil. Name calling and personal attacks are not appropriate.

Is Mid-June Getting Warmer or Colder?

 As I will demonstrate below, this past week has been unusually cool around the region. But that leads to another question.... is mid-June g...