Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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242 FXHW01 KWNH 290710 PMDHI Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 310 AM EDT Wed May 29 2024 Valid 00Z Thu May 30 2024 - 00Z Thu Jun 6 2024 The persistent upper trough, with associated surface trough, that has been in place near 170W over the past few days is finally expected to flatten out and weaken going into Thursday, with the col in the subtropical high filling back in as the high builds back westward north of the Islands. Looking ahead to next Tuesday/Wednesday, the model guidance agrees that another col will develop within the subtropical ridge axis, and this time a little closer to the state. The low level trades should generally be out of the east through Thursday night before backing slightly to the ENE as the pressure gradient becomes more zonal. Breezy conditions are likely most days with winds of 15-25 mph. No major rainfall events are expected over the upcoming week, although terrain enhanced showers will continue. Hamrick $$