Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
759 AM EDT Thu Aug 02 2018

Valid 00Z Fri Aug 03 2018 - 00Z Fri Aug 10 2018

The deep layer/warm core high pressure north of Hawai'i will
strengthen this week. The 06Z GFS/00Z ECMWF/00Z CMC all show a
TUTT low is expected to move over the Hawai'ian islands through
the beginning of the period.  This will bring an increased amount
of moisture and higher chance of showers along the islands.  By
late Sunday night and into Monday, as the TUTT moves farther west
and the ridge will move in, reducing the amount of moisture.
Consequently, the chance of showers reduces.  The 06Z GFS
continues to bring the center of Hector into Hawai'i but remains
the outlier. The 00Z ECMWF, UKmet, and CMC show Hector moving
south of the islands.  However, even with Hector being in the
vicinity could increase the available moisture and enhance rain
chances. 

Reinhart