Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
421 AM EDT Wed Apr 27 2022

Valid 00Z Thu Apr 28 2022 - 00Z Thu May 05 2022

A slight weakness in the subtropical ridge to the north of Hawaii
should weaken trade winds somewhat over the next few days, but
generally moderate to locally breezy trades are still expected,
along with some windward and mountain showers. Upper troughing
aloft looks to come into Hawaii for the latter part of the week
and could last into early next week, providing added instability
for vertical cloud development and showers. Meanwhile, high
pressure will rebuild to the north and restrengthen trade winds
while model guidance continues to show a trend for increasing
precipitable water values. All this combined will lead to a trend
for stronger and wetter trades for the weekend into early next
week. Models do vary somewhat as to the timing of the highest
moisture anomalies--with some increase late this week but
potentially higher values sometime in the Sunday-Tuesday range.
This will continue to be monitored to refine the timing as well as
placement details. Moisture levels look to drop again by the
middle of next week.

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