Drought Information Statement
Issued by NWS Honolulu, HI

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Drought Information Statement
National Weather Service Honolulu HI
1230 PM HST Thu Oct 12 2017

...SEVERE DROUGHT RETURNS TO SOUTH KAUAI...

SYNOPSIS...

Dry conditions continued to affect many areas of the state during
September. Drought conditions worsened on Kauai with the return of
severe drought, or the D2 category on the U.S. Drought Monitor
map, to the southern slopes of the island from Hanapepe to Kekaha.
Moderate drought, or the D1 category, spread into the normally wet
windward slopes of the Kohala Mountains on the Big Island. Extreme
drought, which is the D3 category, maintained its Big Island
presence in the South Kohala District from Waimea to Kawaihae and
the Kau District from Punaluu to South Point. Severe drought also
continued along the upper slopes of the Hamakua, North Hilo, and
South Hilo Districts, and along the slopes of the Kau District
from Pahala to Hawaiian Ocean View Estates.

In Maui County, severe drought continued along the lower slopes of
Haleakala near Kihei and Wailea, and on the west half of Molokai.
Moderate drought remained in place over the rest of Haleakala and
over the leeward slopes of the West Maui Mountains. On Oahu,
moderate drought continued over the leeward sections of the
Waianae Range.

SUMMARY OF IMPACTS...

Kauai.
Non-irrigated pastures continued to deteriorate over the lower
slopes of south Kauai, especially in the area from Hanapepe to
Kekaha. Although still drier than normal, pastures in southeast
and east Kauai have had bouts of rain that prevented drought
conditions from worsening.

Oahu.
Pastures and general vegetation remain dry over west Oahu. Brush
fires have been increasing in frequency in recent weeks.

Maui County
No significant changes since the previous report. Pastures and
general vegetation in the Kihei area of Maui and the Hoolehua and
Maunaloa areas of Molokai remain in poor condition. In the
Upcountry area, a Stage 1 Water Shortage declared on July 18 by
the Department of Water Supply remained in effect due to reduced
incoming supply levels and the ongoing dry weather conditions. The
declaration asks for a voluntary reduction of public water use.

Big Island.
A farmer operating in Waipio Valley reported that low stream flow
conditions have impacted taro production and stunted plant
growth. Pastures in portions of the South Kohala District and the
Kau District near South Point were depleted. Pastures and general
vegetation from Punaluu to Hawaiian Ocean View Estates in the Kau
District were reported to be in very poor condition. From the
public water sector, the County of Hawaii Department of Water
Supply maintained its request for a 10 percent voluntary reduction
in water use for the Ninole and Hakalau areas of the Hamakua
Coast. Water supply springs in the area were reported to be
running low.

CLIMATE SUMMARY...
According to the NOAA Climate Prediction Center, ENSO-neutral
conditions are present in the Pacific Ocean but the atmosphere
and ocean are trending toward a La Nina state. Thus, a La Nina
Watch remains in effect and La Nina conditions are expected to
develop during the fall and persist through the northern
hemisphere`s winter season of 2017 - 2018.

PRECIPITATION/TEMPERATURE OUTLOOK...
The Long-Lead Hawaiian Islands Outlook issued on September 21 by
the NOAA Climate Prediction Center does not show any tilt in the
probabilities for above or below normal rainfall through the fall.
Probabilities favor above normal rainfall for the winter. If La
Nina develops, the enhanced rainfall may primarily affect the
north- and east-facing slopes leaving the south- and west-facing
slopes drier than normal. Probabilities favor above normal
temperatures across the entire state for the remainder of the year
and into spring 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 October 19.

HYDROLOGIC SUMMARY AND OUTLOOK...
Data from the U.S. Geological Survey indicated that most of the
monitored streams across the state had September flow levels in
the below normal range. A few of the streams on Kauai and Oahu had
near to above normal flow levels. The persistence of dry
conditions over much of the state will require sustained periods
of enhanced rainfall to return base flow conditions to a more
normal state.

NEXT ISSUANCE DATE...
The next Drought Information Statement will be issued on November
9, 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
Email: Kevin.kodama@noaa.gov


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