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 0759Z Aug 09, 2022)
 
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
358 AM EDT Tue Aug 09 2022

Valid 00Z Wed Aug 10 2022 - 00Z Wed Aug 17 2022

Trade winds are forecast to continue to strengthen over the next
couple of days to breezy to locally windy levels, with possible
windward and mauka showers. This is in conjunction with the
Pacific surface high well to the north of Hawaii in the Pacific
drifting south, while low pressure is likely to track south of
Hawaii. There are currently only low chances for the surface low
to develop into a tropical cyclone, but regardless it will help
strengthen the pressure gradient and thus the easterly winds for
Hawaii. Less certain is the possibility for enhanced moisture to
come into the state later this week, streaming in from the
tropics. While the highest moisture anomalies should stay south of
the state in the vicinity of the tropical lows, some increased
moisture looks like it could reach the Big Island by Wednesday
night-Thursday, especially according to the ECMWF and EC mean, and
possibly spreading into the rest of the islands through the latter
part of the week. Though still uncertain because Hawaii could be
on one side or the other of the moisture gradient, if this
increased moisture does reach the state, a wetter pattern with
more shower coverage would be expected. By the weekend into early
next week, trades may decrease somewhat and a drier pattern is
likely.

Tate