Skip Navigation Links weather.gov 
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
The Weather Prediction Center

 
 

 

Follow the Weather Prediction Center on Facebook Follow the Weather Prediction Center on Twitter
NCEP Quarterly Newsletter
WPC Home
Analyses and Forecasts
   National High & Low
   WPC Discussions
   Surface Analysis
   Days ½-2½ CONUS
   Days 3-7 CONUS
   Days 4-8 Alaska
   QPF
   PQPF
   Flood Outlook
   Winter Weather
   Storm Summaries
   Heat Index
   Air Quality
   Tropical Products
   Daily Weather Map
   GIS Products
Current Watches/
Warnings

Satellite and Radar Imagery
   Satellite Images
   National Radar
Product Archive
WPC Verification
   QPF
   Medium Range
   Model Diagnostics
   Event Reviews
International Desks
Development and Training
   Development
WPC Overview
   About the WPC
   Staff
   WPC History
   Accomplishments
   Other Sites
   FAQs
Meteorological Calculators
Contact Us
   About Our Site
 
USA.gov is the U.S. Government's official web portal to all federal, state, and local government web resources and services.
 
Hawaii Extended Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 1220Z Aug 27, 2014)
 
Version Selection
Versions back from latest:  0   1   2   3   4   5   6   7   8   9   10   
 
Abbreviations and acronyms used in this product


Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
820 AM EDT Wed Aug 27 2014

Valid 00Z Thu Aug 28 2014 - 00Z Thu Sep 04 2014

27/00Z ECENS and ECMWF deterministic cycle appeared to maintain
the better continuity through the weekend and into next week (day
5-6). With a few exceptions aside--the ECENS/ECMWF was preferred
with the progression and structure of the mid- and upper-level
flow across much of the Pacific--including Hawai'i. Believe its
depicted of the Subtropical Ridge from west to east seemed more
realistic versus the 27/00Z GFS/GEFS--which continues to have a
fast bias over several key locations in the mid-latitude Pacific
and CONUS. The deterministic ECMWF seemed to have a better handle
on the tropical moisture located invof the ITCZ and with the
progression of remnant tropical dynamics/energy associated with
'Lowell' and 'Marie' in the southeast Pacific (between Mexico and
Hawai'i).

Do recommend a blend of the 26/12Z & 27/00Z ECENS to handle the
day 5 through day 7 period--mainly for differences in the north
central Pacific and downstream. Both locations have some impact in
the latter half of the medium range period with reorganization of
the Subtropical Ridge between California and Hawai'i.

Vojtesak