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
   Winter Weather
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
 
(Latest Discussion - Issued 1224Z Oct 22, 2017)
 
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
823 AM EDT Sun Oct 22 2017

Valid 00Z Mon Oct 23 2017 - 00Z Mon Oct 30 2017

...Heavy rain threat late Monday through Tuesday...

East southeast trades will continue to veer to the southeast and
then south ahead of an approaching cold front late Monday through
Tuesday from NW to SE across the island chain. This is in response
to a forming upper low near 30N/160W early Tuesday that is
forecast to remain quasi-stationary for about 24 hours and then
lift to the northeast on Wednesday. Deep tropical moisture should
be drawn northward ahead of the front into the region on Tuesday
-- precipitable water values rising to near 2 inches or +2 to +4
standard deviations -- which supports a heavy rain threat for at
least 24 hours. The consensus takes the front just east of the Big
Island late Wednesday into Thursday, bringing in cooler and much
drier air on NW flow to the state. For next Fri-Sun, winds will
continue to veer to the N then NE and eventually ENE by the end of
next weekend but remain rather breezy.


Fracasso