524  
FXHW01 KWNH 031228  
PMDHI  
 
HAWAII EXTENDED FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
728 AM EST WED JAN 03 2018  
 
VALID 00Z THU JAN 04 2018 - 00Z THU JAN 11 2018  
 
LATEST MODELS AND ENSEMBLES REASONABLY AGREE TO MAINTAIN A  
RELATIVELY BENIGN WEATHER PATTERN FOR THE HAWAIIAN ISLANDS FOR THE  
NEXT WEEK AS DEEP LAYERED HIGH PRESSURE TENDS TO HOLD OVER THE  
STATE. MODERATE MEAN TRADE FLOW OFFERS BELOW NORMAL MOISTURE AND  
LIMITED WINDWARD RAINFALL POTENTIAL, ALBEIT WITH THE BEST CHANCE  
TO SQUEEZE OUT MOISTURE POSSIBLY OCCURRING BY THE WEEKEND FOR THE  
BIG ISLAND AND VICINITY AS IMPULSE ENERGY DIGS OVERTOP ON THE  
EASTERN PERIPHERY OF THE MID-UPPER LEVEL RIDGE. THERE IS HOWEVER A  
REASONABLY GOOD PATTERN TRANSITION SIGNAL FOR APPROACH OF FRONTAL  
SHOWERS TOWARD THE WESTERN ISLANDS IN ABOUT A WEEK AS A MID-UPPER  
LEVEL TROUGH AMPLIFIES AND PASSES JUST TO THE NORTH OF THE  
ISLANDS.  
 
SCHICHTEL  
 

 
 
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