784  
FXHW01 KWNH 071223  
PMDHI  
 
HAWAII EXTENDED FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
722 AM EST SUN JAN 07 2018  
 
VALID 00Z MON JAN 08 2018 - 00Z MON JAN 15 2018  
 
MODELS AND ENSEMBLES CONTINUE TO SHOW OVERALL A RELATIVELY QUIET  
WEATHER PATTERN ACROSS HAWAII. THE EARLY PART OF THE WEEK WILL BE  
IDEAL UNDERNEATH THE INFLUENCE OF A STRONG RIDGE OF HIGH PRESSURE.  
NORMAL TRADES OFFER LIKELY BELOW NORMAL MOISTURE AND LIMITED  
PRECIPITATION WITH PERHAPS ONLY A FEW WINDWARD SHOWERS. BY THE  
MIDDLE OF THE WEEK, A RATHER PRONOUNCED AMPLIFIED UPPER TROUGH  
OVER THE PACIFIC APPROACHES FROM THE NORTH AND WEST. AS THIS  
SYSTEM PASSES THROUGH, IT LEAVES BEHIND AN UPPER-LEVEL WEAKNESS  
OVER THE STATE. THIS MAY SPELL SHOWERS FOR THE NORTHWESTERN  
ISLANDS WITH THE SURFACE FRONT PASSING THROUGH AND THE WEAKNESS  
WITH INCREASING SOUTHEASTERLY FLOW MAY YIELD SHOWERS FOR THE  
EASTERN PORTION OF THE BIG ISLAND. THEN NEXT WEEKEND, ADDITIONAL  
UPPER DYNAMICS OVER THE MID LATITUDES WILL HELP REINFORCE THE  
AMPLIFIED REGIME NORTH OF THE STATE. AN ASSOCIATED FRONTAL ZONE  
MAY DROP IN FROM THE NORTH TO ONLY TRIGGER ISOLATED TO SCATTERED  
SHOWERS ACROSS THE STATE, AS THE DEEPER TROPICAL MOISTURE  
RETURNING NORTH REMAINS WELL EAST OF THE STATE.  
 
MUSHER  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab HPC Page Main Text Page