Prognostic Meteorological Discussion
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FXHW01 KWNH 211209

Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
708 AM EST Wed Feb 21 2018

Valid 00Z Thu Feb 22 2018 - 00Z Thu Mar 01 2018

An upper low is forecast to form later today to the northwest of
the area with a downstream narrow ridge along 150W. This will
allow deep tropical moisture to surge northward across the state
with locally moderate to heavy rain and embedded thunderstorms.
Precipitable water values are forecast to rise to between about 1
1/3 to 1 3/4 inches through the period which is well above average
for late February. Another upper low may form next week just west
of 170W which may pull the precipitable water axis westward next
week, perhaps west of Kauai/Ni`ihau.


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