Drought Information Statement
Issued by NWS Honolulu, HI

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AXHW70 PHFO 092242
DGTHFO
HIC001-003-007-009-102245-

Drought Information Statement
National Weather Service Honolulu HI
1242 PM HST Wed Aug 9 2017

...SEVERE DROUGHT AREA EXPANDS ON THE BIG ISLAND...

SYNOPSIS...

Anomalously stable atmospheric conditions that started in June
continued through the first half of July. The resulting below
normal rainfall caused an increase in drought coverage over the
east half of the state. Rainfall increased during the second half
of July to help stabilize the drought conditions but decreased
once again in early August. Severe drought, or the D2 category on
the U.S. Drought Monitor map, expanded to cover most of the South
Kohala and Hamakua Districts of the Big Island in early July.
Severe drought conditions also popped up along the lower
elevations of the Kau District from Punaluu to South Point.
Moderate drought, or the D1 category, filled in most of the
remaining areas of the Big Island with the exception of the Kona
slopes and the windward slopes of the Kohala Mountains.

Moderate drought conditions also developed over most of the island
of Maui and over the west half of Molokai during the past month.
The rest of Maui County was not yet at the D1 level of impacts but
is considered to be abnormally dry.

SUMMARY OF IMPACTS...

Kauai.
No significant drought impacts reported.

Oahu.
No significant drought impacts reported.

Maui County
Reduced trade wind rainfall lowered surface water flow levels
feeding the Upcountry water system. This prompted the Maui County
Department of Water Supply to declare a Stage I Water Shortage on
July 18 due to reduced incoming supply levels and the ongoing dry
weather conditions. The declaration asks for a voluntary
conservation of public water. On Molokai, livestock operators
reported poor pasture conditions on the west side of the island.

Big Island.
The ongoing drought conditions have maintained the flow of impact
reports from the Big Island. In addition to ginger reported last
month, sweet potato and taro farmers recently indicated reduced
production on the windward side. Pastures and general vegetation
in the southern portion of the Kau District and portions of the
Humuula Saddle in the interior of the island were reported to be
in poor condition. Ranchers in the Hamakua and Puna Districts
indicated that water holes have been drying up. This is consistent
with the observation from the Hawaii County Department of Water
Supply which mentioned a reduction in flow from springs in the
Ninole, Hakalau, and Naalehu areas.

CLIMATE SUMMARY...
According to the NOAA Climate Prediction Center...ENSO-neutral
conditions are present in the Pacific Ocean and are expected to
persist through the northern hemispheric winter season of 2017
- 2018.

PRECIPITATION/TEMPERATURE OUTLOOK...
The Long-Lead Hawaiian Islands Outlook issued on July 20 by the
NOAA Climate Prediction Center does not show any tilt in the
probabilities for above or below normal rainfall through the
summer. Probabilities favor above normal temperatures across the
entire state for the remainder of the year. The next long-lead
outlook will be issued by the Climate Prediction Center on August
17.

HYDROLOGIC SUMMARY AND OUTLOOK...
Data from the U.S. Geological Survey indicated that most of the
monitored streams from Kauai to Maui had 30-day flow levels in
the near normal to below normal range. All of the monitored
streams on the Big Island had 30-day flow levels in the below
normal range. Barring an impact by a tropical cyclone or its
remnant moisture area, there does not appear to be any compelling
reason to expect a change from near to below normal streamflow
through the rest of the 2017 summer season and possibly into early
fall.

NEXT ISSUANCE DATE...
The next Drought Information Statement will be issued on September 8,
2017 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
Kevin.kodama@noaa.gov


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