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Hawaii Extended Forecast Discussion
(Caution: Version displayed is not the latest version. - Issued 1224Z Feb 28, 2015)
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Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
724 AM EST Sat Feb 28 2015

Valid 00Z Sun Mar 01 2015 - 00Z Sun Mar 08 2015

...Prolifically Wet Pattern...

The models continue to indicate that a frontal zone and upper
trough will waffle across the Hawai'ian islands for the next week,
bringing soaking showers and squalls. With time, the GFS and ECMWF
show the orientation of the system to transition from meridional
to zonal, affording greater distribution of precipitation across
the state via orographics. The GFS QPF for the five-day period
ending 00Z/06 Friday is over a foot on Mauna Loa, with more
rainfall thereafter statewide. The ECMWF QPF is more evenly
distributed for the first five days of the forecast period, with
more of an emphasis on the eastern parts of the island chain. The
ECMWF also continues rainfall into next weekend--again,
emphasizing the eastern portion of the islands.