Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 830 AM EDT Mon Mar 18 2019 Valid 00Z Tue Mar 19 2019 - 00Z Tue Mar 26 2019 High surf warnings and advisories remain in effect for portions of the islands today. This is the case as post-frontal high pressure bridges to the north of the state and ushers in drier conditions within an overall modest trade flow pattern expected to perist into Thursday. A favored guidance composite of reasonably well clustered model and ensemble guidance indicates that passage to the north of the state of mid-upper level trough energies by Friday will sag a shower focusing front to the north of the islands, with a potential push across the state this weekend with flow/trough amplification aloft. Post-frontal high pressure bridges to the north of the state through this period that would otherwise lead into an increase in trade flow and moisture/showers underneath into the state. Schichtel