Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
242 AM EST Mon Jan 20 2025

Valid 00Z Tue Jan 21 2025 - 00Z Tue Jan 28 2025

Generally dry and stable conditions will continue through about
Tuesday, with light trade winds. By Wednesday-Thursday though, the
guidance continues to indicate a cut-off upper low forming
near/north of Hawaii. The guidance continues to show better
agreement on this feature compared to recent days, though the
UKMET is the farthest south and over the northern islands.
Guidance has backed off somewhat on rainfall amounts, most keeping
the better rainfall north of the islands, but an associated cold
front should still bring an uptick in precipitation (moderate to
locally heavy at times) and possibly gusty winds. Still plenty of
uncertainty in the details though, which would impact exact
sensible weather threats. The low should lift out of the region by
Friday into Saturday. Another trough looks to amplify north of the
region Sunday into Monday of next week with a cold front swinging
through the state and another chance for increased precipitation. 

Santorelli