Drought Information Statement
Issued by NWS Honolulu, HI

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AXHW70 PHFO 111838
DGTHFO
HIC001-003-007-009-122200-

Drought Information Statement
National Weather Service Honolulu HI
838 AM HST Thu Jan 11 2018

...DROUGHT CONTINUED TO EASE IN DECEMBER...

SYNOPSIS...

Portions of the state received significant rainfall in December to
continue the trend of easing drought heading into the heart of the
Hawaiian Islands wet season. At present, severe drought, or the D2
category on the U.S. Drought Monitor Map, is depicted only on the
lower slopes of the South Kohala District near Kawaihae. An impact
assessment is currently underway which may show that drought
conditions have improved as a result of recent rainfall. Moderate
drought coverage, or the D1 category, receded from the windward
and upper Mauna Kea slopes, and was removed from Oahu and Maui
County. Below average rainfall in December over leeward sections
of Kauai kept moderate drought conditions in place for now.

SUMMARY OF IMPACTS...

Kauai.
Below average rainfall during December has halted the drought
recovery process for general vegetation and non-irrigated
pastures over the leeward slopes of Kauai.

Oahu.
There are no drought impacts to report.

Maui County
There are no drought impacts to report.

Big Island.
Overall, pasture conditions have continued to improve over the
past month within the existing drought areas. For the rest of the
island there have been no reports of drought related impacts.
However, rainfall data indicated that drier than average
conditions have recently spread from the Kau District into the
Volcano and Glenwood areas of upper Puna so drought-related
impacts may begin to occur if more seasonal rains don`t resume
soon.

CLIMATE SUMMARY...
According to the NOAA Climate Prediction Center, La Nina
conditions are present in the Pacific Ocean. This La Nina event
is forecast to transition to ENSO-neutral conditions in mid- to
late-spring 2018.

PRECIPITATION/TEMPERATURE OUTLOOK...
The Long-Lead Hawaiian Islands Outlook issued on December 21 by
the NOAA Climate Prediction Center shows probabilities favoring
above normal rainfall through the winter. The enhanced rainfall
may primarily affect the north- and east-facing slopes with the
potential for the south- and west-facing slopes to be drier than
normal. Probabilities favor above normal temperatures across the
entire state into summer 2018 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 January 18.

HYDROLOGIC SUMMARY AND OUTLOOK...
Data from the U.S. Geological Survey indicated that most of the
monitored streams on Kauai had December flow levels in the below
normal range. Most of the monitored streams on Oahu and the Big
Island had normal flow levels. Maui County flow levels were mostly
above normal. Based on the precipitation outlook, streams and
rivers draining the north- and east-facing slopes of the Hawaiian
Islands have the highest probabilities for streamflow in the near
to above normal range through the winter months.

NEXT ISSUANCE DATE...
The next Drought Information Statement will be issued on February
8, 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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