Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
336 AM EDT Fri Apr 22 2022

Valid 00Z Sat Apr 23 2022 - 00Z Sat Apr 30 2022

Surface high pressure in place to the northeast of Hawaii over the
next couple of days and additional high pressure moving eastward
to the north of the state early next week will keep a breezy
easterly trade wind pattern in place. Cloudy conditions are likely
to abate over the next day or so as a weak upper disturbance moves
out. But moisture (precipitable water) values are forecast to
remain above normal through the weekend. Windward and
mountain/mauka showers are most common in this wind regime, and
may be able to tap into the high moisture values to cause locally
moderate to heavy rainfall, but widespread heavy rain is not
expected. A drier trade wind pattern is forecast for early next
week as moisture levels return to near normal. But moisture may
increase again by the latter part of next week while model
guidance generally shows modest upper troughing over the state as
well, so this will continue to be monitored.

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