Drought Information Statement
Issued by NWS Honolulu, HI

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AXHW70 PHFO 052022

Drought Information Statement
National Weather Service Honolulu HI
1022 AM HST Fri Jul 5 2019


A low pressure system of the type normally seen during the
October through April wet season brought significant rainfall to
the west half of the main Hawaiian Islands in late June. As a
result, drought conditions have eased from Kauai County to Molokai
and Lanai in Maui County. Severe drought, or the D2 category on
the U.S. Drought Monitor map, over the leeward slopes of Kauai,
Oahu, and Molokai eased to moderate drought conditions, or the D1
category. The drought gradient on the southern slopes of the Big
Island is very strong, with extreme drought, or the D3 category,
remaining in place near South Point. On the island of Maui, severe
drought remains in place along the lower leeward slopes of
Haleakala from Kihei to Kaupo.


Kauai and Oahu
Significant rainfall occurred across both islands, initiating the
regrowth of pastures and general vegetation. However, a return to
dry conditions during this time of year could result in a rapid
degradation of vegetation health.

Maui County
Molokai and Lanai received significant rainfall during the late
June storm system. This has started a regrowth of pastures and
general vegetation on both islands. The main band of rainfall did
not reach Maui and the existing drought areas remained dry.
Reports from the agriculture sector indicated that pasture
conditions were still in poor condition along the lower leeward
slopes of Haleakala from Kihei to Kaupo. A Stage 1 Water Shortage,
issued by the Maui County Department of Water Supply, remains in
effect for Upcountry Maui. The declaration requests residents to
voluntarily reduce water consumption by 10 percent.

Big Island.
Ranchers and the U.S. Department of Agriculture`s Farm Service
Agency, continue to indicate extremely poor pasture conditions in
the South Point area, with little to no useful forage. The
rainfall gradient in the area has been quite strong, with rainfall
occurring farther up the slopes but very little reaching the
existing extreme drought area. Below average rainfall has also
started to impact the ginger crop along the Hamakua Coast near
Umauma and Hakalau. Vegetation is also reported to be very dry
near Hawi.

According to the NOAA Climate Prediction Center (CPC), El Nino conditions
remain present in the Pacific Ocean. The forecast from CPC favors
a continuation of El Nino through at least the summer and
possibly through the end of 2019. The El Nino is expected to
remain a weak event based on a consensus of the main dynamical and
statistical models. An update to the outlook will be issued by
CPC on July 11.

The Long-Lead Hawaiian Islands Outlook issued on June 20 by the
NOAA Climate Prediction Center shows probabilities favoring above
normal rainfall across the state through the rest of the summer.
Given the time of year, with trade winds expected to prevail, the
above normal rainfall will mainly affect the windward slopes while
most leeward areas remain dry. The Kona slopes are expected to be
the only leeward area that will have above normal rainfall since
this area has a summer wet season and warmer than average sea
surface temperatures should enhance afternoon showers.
Probabilities favor above normal temperatures across the state
through the summer due to the forecast of above average sea
surface temperatures around the Hawaiian Islands. The next long-
lead outlook will be issued by the Climate Prediction Center on
July 18.

Data from the U.S. Geological Survey indicated that most of the
monitored streams on the Big Island and Maui had near to below
normal flow levels for the month of June. In contrast, most of the
monitored streams on Kauai, Oahu, and Molokai had near to above
normal flow levels. 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 through
summer 2019.

The next Drought Information Statement will be issued on August
15, 2019 or sooner if necessary in response to significant
changes in conditions.

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:
Hawaii Drought Impact Reporter: hawaii.droughtreporter.unl.edu/

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.

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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