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
   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 1928Z Feb 25, 2015)
 
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...Corrected
NWS Weather Prediction Center College Park MD
228 PM EST Wed Feb 25 2015

Valid 00Z Thu Feb 26 2015 - 00Z Thu Mar 05 2015

The 25/00Z forecast cycle of the ECENS/ECMWF, GEFS/GFS and NAEFS
seemed to be in decent agreement through the entire forecast
period---though there are some subtle differences aloft on or just
after 3/00Z.

Concerning the 'Kona-like' upper system along 15N 140W, the latest
guidance has not made many changes---allowing the feature to make
its closest approach to the Big Island around 27/12Z---then have
mid-level ridge to its north and the frontal boundary to its
west---effectively 'blocking' its westward migration after 27/12Z.

For the latter half of this forecast period, recommend a blend of
the 25/00Z GEFS/ECENS/NAEFS. This would make for a slightly
more-amplified flow pattern across the Pacific---but a slower
west-to-east progression of the low-level front across Hawai'i
this weekend and early next week.

Vojtesak