Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 244 AM EST Wed Feb 14 2024 Valid 00Z Thu Feb 15 2024 - 00Z Thu Feb 22 2024 Model guidance has been consistent with a relatively strong cold front reaching the northwestern Islands on Thursday morning, and then clearing the Big Island by Friday afternoon, bringing slightly cooler temperatures and lower humidity. High pressure gradually builds in from the west going into the weekend based on the ensemble means, with the surface high centered just north of the main Islands by next Monday before moving to a position northeast of the state by Tuesday based on the ensemble means. A col may develop within the main subtropical ridge axis by next Wednesday with a weak frontal boundary approaching the northwestern Islands. The passage of the cold front will bring a stronger wind surge out of the north late Thursday into Friday as the cold front clears the state, followed by northeasterly flow over the weekend that gradually veers to the east. There will likely be some increase in shower coverage across the Islands for the end of the week as the front passes, but otherwise no organized areas of heavy rainfall are anticipated. Hamrick