National Weather Service United States Department of Commerce

Drought Information Statement  Issued: 09/12/2019 09:27:56 AM HST


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AXHW70 PHFO 121927
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HIC001-003-007-009-132200-

Drought Information Statement
National Weather Service Honolulu HI
927 AM HST Thu Sep 12 2019

...EXTREME DROUGHT CONTINUES OVER PORTIONS OF MAUI AND THE BIG
ISLAND...

SYNOPSIS...

A couple of passing tropical cyclones helped boost rainfall over
the southern portion of the Big Island in August. This brought
much needed relief to the South Point area of the Kau District and
helped ease the area out of severe drought, or the D2 category on
the U.S. Drought Monitor map. However, conditions remained dry
over the northern tip of the Big Island and along the lower
leeward slopes of Maui. Both areas remained in extreme drought, or
the D3 category. On south Lanai, severe drought developed along
the leeward side of the island. Drier than normal conditions also
resulted in the development of moderate drought, or the D1
category, over the leeward areas of Molokai and Oahu.

The return of more typical trade wind showers to the windward
slopes of the Big Island helped stabilize conditions but it was
not enough to remove moderate drought along the Hamakua coast.

SUMMARY OF IMPACTS...

Kauai
Rainfall over south Kauai has been below average but there have
not been any reported impacts so far.

Oahu
The lower elevations along the leeward slopes of the island have
deteriorating general vegetation conditions based on satellite
data and visual inspection.

Maui County
On Maui, pasture conditions remain very poor along the lower
leeward slopes of Haleakala from Kihei to Kaupo. Following a
large brushfire in late July, several additional fires have
occurred within Maui`s central valley over the past month due to
the ongoing dry conditions. On Molokai, satellite-based vegetation
health data indicated pockets of deteriorating conditions on the
west half of the island.

Big Island.
Satellite-based vegetation health data indicated that conditions
in the Kau District have improved over the past month. The worst
conditions on the island were along the lower leeward slopes of
the Kohala Mountains south of Hawi and near Upolu Airport. Farmers
along the slopes of the Hamakua District also reported that
pasture conditions remained degraded.

DROUGHT MITIGATION ACTIONS...
A Stage 1 Water Shortage declaration, issued by the Maui County
Department of Water Supply, remained in effect for Upcountry
Maui. The declaration requests residents to voluntarily reduce
water consumption by 10 percent.

LOCAL DROUGHT OUTLOOK...
The Long-Lead Hawaiian Islands Outlook issued on August 15 by the
NOAA Climate Prediction Center shows probabilities favoring above
normal rainfall across the state through the remainder of 2019.
Probabilities also favor above normal temperatures across the
state through the rest of 2019 due to the forecast of persistent
above average sea surface temperatures around the Hawaiian
Islands. The next long-lead outlook will be issued by the Climate
Prediction Center on September 19.

In the near term, drought conditions are expected to persist along
the leeward slopes through September. Farther out in time, the
onset of the Hawaiian Islands wet season in October should produce
rainfall that will ease drought conditions in these leeward
areas.

NEXT ISSUANCE DATE...
The next Drought Information Statement will be issued on October
10, 2019 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.

CONTACT INFORMATION...
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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