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
  GOES-East Satellite
  GOES-West Satellite
  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
   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 1229Z Aug 17, 2019)
 
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
829 AM EDT Sat Aug 17 2019

Valid 00Z Sun Aug 18 2019 - 00Z Sun Aug 25 2019

The models indicate a low to mid level ridge building north of the
islands this weekend into early next week. Trades will be become
moderate to occasionally strong.  Expect terrain-enhanced showers
with slightly higher amounts in windward terrain of the big island
and Maui.

A tropical wave is forecast pass across the southern islands and
waters further south toward the middle of next week.  An increase
in precipitable water can be expected by Tuesday into Wednesday,
particularly on the big island.  This should result in more
showers, with a focus on the southern islands.

At the end of next week, the tropical wave is expected to pass
west of the islands. The moisture plume should depart with the
wave, with a drying trend aloft at the end of next week and down
tick in shower coverage/amounts. 

Petersen