Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 800 AM EDT Tue Mar 26 2019 Valid 00Z Wed Mar 27 2019 - 00Z Wed Apr 03 2019 The guidance continues to show good agreement that high pressure north of the state will slide southeastward and weaken as mean troughing becomes established over the east-central Pacific. A leading vigorous shortwave passing to the north will push a cold front into the main islands by Thursday bringing an increase in clouds and mainly light windward/mountain showery activity. Trailing high pressure should trade winds brisk this weekend before another possible shortwave/cold front approaches the islands early next week. Models and ensembles show bigger disagreement in timing of this system, though a return of increased moisture and rain showers should return by early next week ahead of the approaching boundary. Santorelli