597  
FXHW01 KWNH 271208  
PMDHI  
 
HAWAII EXTENDED FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
707 AM EST WED DEC 27 2017  
 
VALID 00Z THU DEC 28 2017 - 00Z THU JAN 04 2018  
 
COLD FRONT WILL CONTINUE TO PUSH SOUTHEASTWARD TODAY WITH  
SCATTERED SHOWERS OVER THE ISLANDS. UPPER TROUGH WILL MOVE  
EASTWARD OVER THE NEXT TWO DAYS AND HEIGHTS WILL BUILD FOR THE END  
OF THE WEEK INTO NEXT WEEK AS THE RIDGE AXIS SETS UP WEST OF THE  
AREA. THIS WILL SUPPORT DRIER CONDITIONS WITH BREEZY TRADES FROM  
THE NORTHEAST, VEERING TO THE EAST, AS A 1022MB HIGH MEANDERS TO  
THE NORTHEAST OF HAWAI'I. ISOLATED TO MAYBE SCATTERED  
WINDWARD/MAUKA SHOWERS ARE EXPECTED WITH GENERALLY LIGHT  
ACCUMULATIONS. BY THE END OF THE PERIOD, ANOTHER TROUGH MAY DIP  
NEAR THE REGION (00Z ECMWF/CANADIAN WERE ON THE DEEPER SIDE OF THE  
ENSEMBLE SPREAD) BUT THE ENSEMBLE CONSENSUS WAS FARTHER EAST  
AROUND 140W).  
 
FRACASSO  
 

 
 
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