Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
251 AM EST Mon Mar 3 2025

Valid 00Z Tue Mar 4 2025 - 00Z Tue Mar 11 2025

A col has developed within the subtropical ridge axis as a frontal
boundary crosses the northwestern Islands early in the week, with
the surface high building north of the state 30-35 degrees north. 
The core of this high makes steady eastward progress through the
week, with another col in the ridge developing north of the state
for the end of the week as another frontal boundary approaches. 
There is good overall agreement in the ensemble means regarding
the synoptic scale pattern through the forecast period.

The model guidance suggests the heaviest rainfall with the cold
front Monday should stay well north of the Islands, with mainly
trade wind enhanced showers expected most days and no major
rainfall events on the horizon.  In terms of winds, breezy
easterly flow is expected through much of the week with the high
building in to the north.  There may be some veering to the
southeast depending on the timing and evolution of the next
trough/col.

Hamrick