438  
AXHW70 PHFO 080117  
DGTHFO  
HIC001-003-007-009-090130-  
 
DROUGHT INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE HONOLULU HI  
317 PM HST FRI SEP 7 2018  
   
..HURRICANE LANE DELUGE MISSES WORST DROUGHT AREAS
 
 
SYNOPSIS...  
 
THE PASSAGE OF HURRICANE LANE NEAR THE STATE OF HAWAII IN LATE  
AUGUST PRODUCED OVER 50 INCHES OF RAINFALL AND SIGNIFICANT  
FLOODING ALONG PORTIONS OF THE WINDWARD SLOPES OF THE BIG ISLAND.  
THE WINDWARD SLOPES OF MAUI RECEIVED OVER 20 INCHES IN SOME SPOTS  
AND ALSO SUSTAINED SIGNIFICANT FLOODING. HOWEVER, MOST OF THE  
EXISTING DROUGHT AREAS ALONG THE LEEWARD SLOPES RECEIVED MUCH LESS  
RAINFALL. SEVERE DROUGHT, OR THE D2 CATEGORY ON THE U.S. DROUGHT  
MONITOR MAP, COVERED THE LOWER LEEWARD SLOPES OF MOLOKAI AND MAUI  
IN MAUI COUNTY, AND THE NORTH KONA AND SOUTH KOHALA DISTRICTS OF  
THE BIG ISLAND PRIOR TO LANE'S PASSAGE. SOME REDUCTION IN THE  
SEVERE DROUGHT COVERAGE MAY OCCUR ONCE VEGETATION HAS HAD  
SUFFICIENT TIME TO RECOVER. AREAS OF MODERATE DROUGHT, OR THE D1  
CATEGORY, ALONG THE LEEWARD SLOPES OF THE BIG ISLAND, MAUI,  
MOLOKAI, AND OAHU WILL LIKELY BE REDUCED FOLLOWING A RECOVERY  
PERIOD.  
 
SUMMARY OF IMPACTS...  
 
KAUAI.  
THERE ARE NO DROUGHT IMPACTS TO REPORT.  
 
OAHU.  
GENERAL VEGETATION CONDITIONS WERE DETERIORATING AND BRUSH FIRE  
INCIDENTS WERE ON THE RISE PRIOR TO HURRICANE LANE BUT APPEAR TO  
BE IMPROVING IN SOME AREAS.  
 
MAUI COUNTY  
A FAST-MOVING BRUSH FIRE ALONG THE LEEWARD SLOPES OF THE WEST MAUI  
MOUNTAINS DURING THE PASSAGE OF HURRICANE LANE DAMAGED OR  
DESTROYED OVER 20 STRUCTURES AND 30 VEHICLES. THIS OCCURRED WHILE  
THERE WAS DAMAGING FLASH FLOODING ON THE OPPOSITE SIDE OF THE  
ISLAND.  
 
BIG ISLAND.  
RAINFALL FROM LANE HAS IMPROVED VEGETATION CONDITIONS IN SOME OF  
THE EXISTING DROUGHT AREAS. THE USDA FARM SERVICE AGENCY IS IN THE  
PROCESS OF ASSESSING CONDITIONS.  
 
CLIMATE SUMMARY...  
ACCORDING TO THE NOAA CLIMATE PREDICTION CENTER, ENSO-NEUTRAL  
CONDITIONS ARE PRESENT IN THE PACIFIC OCEAN BUT PROBABILITIES  
FAVOR A TRANSITION TO EL NINO CONDITIONS IN THE FALL OF 2018.  
 
PRECIPITATION/TEMPERATURE OUTLOOK...  
THE LONG-LEAD HAWAIIAN ISLANDS OUTLOOK ISSUED ON AUGUST 16 BY THE  
NOAA CLIMATE PREDICTION CENTER SHOWS PROBABILITIES FAVORING ABOVE  
NORMAL RAINFALL INTO THE MIDDLE OF FALL 2018. BELOW NORMAL  
RAINFALL IS FORECAST FOR THE UPCOMING WINTER AND SPRING MONTHS AS  
A RESULT OF THE DEVELOPING EL NINO EVENT. PROBABILITIES FAVOR  
ABOVE NORMAL TEMPERATURES ACROSS THE ENTIRE STATE INTO EARLY 2019  
DUE TO THE FORECASTED PERSISTENCE OF ABOVE AVERAGE SEA SURFACE  
TEMPERATURES AROUND THE HAWAIIAN ISLANDS. THE NEXT LONG-LEAD  
OUTLOOK WILL BE ISSUED BY THE CLIMATE PREDICTION CENTER ON  
SEPTEMBER 20.  
 
HYDROLOGIC SUMMARY AND OUTLOOK...  
DATA FROM THE U.S. GEOLOGICAL SURVEY INDICATED THAT MOST OF THE  
MONITORED STREAMS ACROSS THE STATE HAD FLOW LEVELS IN THE MUCH  
ABOVE NORMAL TO HIGH FLOW RANGE. BASED ON THE PRECIPITATION  
OUTLOOK, STREAMFLOW IS EXPECTED TO BE ABOVE NORMAL THROUGH THE  
MIDDLE OF FALL.  
 
NEXT ISSUANCE DATE...  
THE NEXT DROUGHT INFORMATION STATEMENT WILL BE ISSUED ON OCTOBER  
5, 2018 OR SOONER IF NECESSARY IN RESPONSE TO SIGNIFICANT CHANGES  
IN CONDITIONS.  
 
RELATED WEB SITES...  
ADDITIONAL INFORMATION ON CURRENT DROUGHT CONDITIONS MAY BE FOUND  
AT THE FOLLOWING WEB ADDRESSES:  
 
U.S. DROUGHT MONITOR: DROUGHTMONITOR.UNL.EDU/  
HAWAII DROUGHT MONITOR: DLNR.HAWAII.GOV/DROUGHT  
USGS HAWAII - RECENT CONDITIONS: HI.WATER.USGS.GOV/RECENT/INDEX.HTML  
CLIMATE PREDICTION CENTER LONG-LEAD HAWAII OUTLOOK:  
WWW.CPC.NCEP.NOAA.GOV/PRODUCTS/PREDICTIONS/90DAY/FXHW40.HTML  
HAWAII DROUGHT IMPACT REPORTER: HAWAII.DROUGHTREPORTER.UNL.EDU/  
 
ACKNOWLEDGMENTS...  
INFORMATION FOR THIS PRODUCT WAS COMPILED FROM A NUMBER OF SOURCES INCLUDING  
THE COUNTY BOARDS AND DEPARTMENTS OF WATER SUPPLY, U.S. AND STATE  
OF HAWAII AGRICULTURE AGENCIES, THE U.S. GEOLOGICAL SURVEY, AND  
THE MEDIA.  
 
QUESTIONS OR COMMENTS...  
IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS DROUGHT  
INFORMATION STATEMENT, PLEASE CONTACT:  
 
KEVIN KODAMA  
NATIONAL WEATHER SERVICE  
2525 CORREA RD. SUITE 250  
HONOLULU HI 96822  
PHONE: 808-973-5276  
EMAIL: KEVIN.KODAMA@NOAA.GOV  
 

 
 
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