Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 353 AM EDT Sun Jul 04 2021 Valid 00Z Mon Jul 05 2021 - 00Z Mon Jul 12 2021 A strong subtropical ridge north-northwest of the Islands strengthens and expands as it shifts further westward through Tuesday before stalling and slowly weakening. Then the next ridge shifts west from California. Moderate strength trade winds today ease a bit tonight and persist at lower levels through the week ahead. This somewhat moist trade flow maintains wide scattered windward terrain/mountain focusing showers through the weekend. Jackson