Drought Information Statement
Issued by NWS Honolulu, HI

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AXHW70 PHFO 152015
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HIC001-003-007-009-162200-

Drought Information Statement
National Weather Service Honolulu HI
1015 AM HST Thu Aug 15 2019

...DROUGHT WORSENS OVER PORTIONS OF MAUI AND THE BIG ISLAND...

SYNOPSIS...
Ongoing recovery following an unusual late June heavy rain event
helped eliminate drought conditions on Kauai, Oahu, and Molokai in
July. However, a continued deficit in rainfall along the lower
leeward slopes of Haleakala resulted in severe drought, or the D2
category on the U.S. Drought Monitor map, worsening to extreme
drought, or the D3 category from Kihei to Makena. Existing severe
drought remained in place from Makena to Kaupo, and spread
westward from Kihei to Olowalu.

Above average rainfall over the southern two-thirds of the Big
Island helped remove most of the drought from the South Kohala
District to the Humuula Saddle. Extreme drought over the South
Point area eased a bit to the severe drought category. In
contrast, the region from the Hamakua slopes to Upolu Point had
another month of below average rainfall. This resulted in severe
drought conditions near Hawi worsening to the extreme drought
category.

SUMMARY OF IMPACTS...

Kauai
There were no drought impacts to report. Rainfall in late June
across both islands helped produce regrowth of pastures and
general vegetation. However, a return to dry conditions in July
and early August is starting to stress vegetation along the lower
southern slopes of the island from Hanapepe to Poipu.

Oahu
There were no significant drought impacts. Below average rainfall across
most of the island in July has started to stress vegetation, and
drought impacts could return in the near future.

Maui County
On Maui, reports from ranchers operating along the lower leeward
slopes of Haleakala indicated very poor pasture conditions. In
addition, a large brush fire in mid-July burned over 9000 acres of
dry, fallow, mostly former sugar cane lands in the Central Valley.
This was followed by a roughly 2500 acre brush fire in the
Pukalani area during early August. 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.
On Molokai, satellite-based vegetation health data indicated that
conditions were much improved compared to a couple of months ago.

Big Island
According to the U.S. Department of Agriculture`s Farm Service
Agency, ranchers operating in the South Point area have seen
modest improvement in pasture conditions from rainfall over the
past month. However, follow-up rainfall is needed for continued
recovery. On the opposite end of the island, satellite-based
vegetation health data indicated that conditions in the Hawi and
Upolu Point areas worsened over the past month.

CLIMATE SUMMARY...
According to the NOAA Climate Prediction Center (CPC), El Nino has
ended and has transitioned to an ENSO-neutral state. The forecast
from CPC favors a continuation of ENSO-neutral conditions into
early 2020 based on a consensus of the main statistical and
dynamical models.

PRECIPITATION/TEMPERATURE 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.

HYDROLOGIC SUMMARY AND OUTLOOK...
Data from the U.S. Geological Survey indicated that most of the
monitored streams across the state had near to below normal flow
levels for the month of July. The only exceptions were a few gages
in the Kaneohe area of Oahu which indicated above normal flow.
Based on the precipitation outlook, flow levels in windward
streams are expected to be near to above normal, while leeward
streams may have below normal flow into the autumn months of 2019.

NEXT ISSUANCE DATE...
The next Drought Information Statement will be issued on September
12, 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.

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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