Flash Flood Warning 55, NWS Honolulu, HI

417 
WGHW70 PHFO 122135
FFSHFO

Flash Flood Statement
National Weather Service Honolulu HI
1135 AM HST WED SEP 12 2018

HIC009-122330-
/O.CON.PHFO.FF.W.0055.000000T0000Z-180912T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maui HI-
1135 AM HST WED SEP 12 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM HST FOR THE
ISLAND OF MAUI IN MAUI COUNTY...

At 1130 AM HST...radar indicated heavy rain continuing along the 
slopes of Haleakala with peak rates of 3 to 4 inches per hour. Maui 
County Emergency Management reported that Ulaino Road and Waikoloa 
Road near Hana are closed. Low water crossings along Piilani Highway 
will become impassable, especially from Waiopae to Kipahulu and 
including Pahihi Gulch and Kalepa Gulch. Heavy rain also continues 
over the northern slopes of the West Maui Mountains. 

This warning includes the entire island of Maui.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A flash flood warning means that flooding is imminent or occurring in
streams, roads, and low lying areas. Move to higher ground now.

Do not cross fast flowing water in your vehicle, or on foot. Turn
around, don't drown.

&&

This warning may need to be extended beyond 130 PM HST if heavy rain
persists.

LAT...LON 2064 15607 2063 15622 2059 15630 2059 15642
      2064 15646 2079 15647 2081 15663 2093 15670
      2101 15667 2104 15660 2090 15648 2095 15633
      2094 15625 2082 15611 2080 15601 2073 15599

$$

Kodama

084 
WGHW50 PHFO 122316
FFWHFO
HIC009-130215-
/O.EXT.PHFO.FF.W.0055.000000T0000Z-180913T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Honolulu HI
116 PM HST WED SEP 12 2018

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
  The island of Maui in Maui County

* Until 415 PM HST.

* At 111 PM HST, radar showed heavy rain continuing over portions of 
  Maui. The highest rates were estimated to be 2 to 3 inches per 
  hour over the West Maui Mountains and 1 to 2 inches per hour over 
  the southeastern slope of Haleakala. Waikoloa Road and Ulaino Road 
  remain closed near Hana. Low water crossings along Piilani Highway 
  from Waiopae to Kipahulu are at risk of being closed by flooding.

* This warning includes the entire island of Maui.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A flash flood warning means that flooding is imminent or occurring in
streams, roads, and low lying areas. Move to higher ground now.

Do not cross fast flowing water in your vehicle, or on foot. Turn
around, don't drown.

&&

This warning may need to be extended beyond 415 PM HST if heavy rain
persists.

LAT...LON 2064 15607 2063 15622 2059 15630 2059 15642
      2064 15646 2079 15647 2081 15663 2093 15670
      2101 15667 2104 15660 2090 15648 2095 15633
      2094 15625 2082 15611 2080 15601 2073 15599

$$

Kodama

388 
WGHW70 PHFO 130046
FFSHFO

Flash Flood Statement
National Weather Service Honolulu HI
246 PM HST WED SEP 12 2018

HIC009-130215-
/O.CON.PHFO.FF.W.0055.000000T0000Z-180913T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maui HI-
246 PM HST WED SEP 12 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM HST FOR THE
ISLAND OF MAUI IN MAUI COUNTY...

At 242 PM HST...radar and rain gages showed that rainfall has 
diminished over the past hour across Maui but runoff levels remain 
high. The State Department of Transportation reported that the 
Honolua Gulch has overflowed onto the Honoapiilani Highway. 

This warning includes the entire island of Maui.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A flash flood warning means that flooding is imminent or occurring in
streams, roads, and low lying areas. Move to higher ground now.

Do not cross fast flowing water in your vehicle, or on foot. Turn
around, don't drown.

&&

This warning may need to be extended beyond 415 PM HST if heavy rain
persists.

LAT...LON 2064 15607 2063 15622 2059 15630 2059 15642
      2064 15646 2079 15647 2081 15663 2093 15670
      2101 15667 2104 15660 2090 15648 2095 15633
      2094 15625 2082 15611 2080 15601 2073 15599

$$

Kodama

964 
WGHW50 PHFO 130205
FFWHFO
HIC009-130515-
/O.EXT.PHFO.FF.W.0055.000000T0000Z-180913T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Honolulu HI
405 PM HST WED SEP 12 2018

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
  The island of Maui in Maui County

* Until 715 PM HST.

* At 359 PM HST, radar and rain gages showed that rainfall has 
  diminished across Maui but runoff levels remain high. Maui County 
  Emergency Management reported that the Lower Honoapiilani Road has 
  been closed and several homes in the area were evacuated due to 
  flooding. Honolua Gulch also overflowed onto Honoapiilani Highway. 
  In east Maui, Ulaino Road and Waikoloa Road remain closed near 
  Hana. 

* This warning includes the entire island of Maui.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A flash flood warning means that flooding is imminent or occurring in
streams, roads, and low lying areas. Move to higher ground now.

Do not cross fast flowing water in your vehicle, or on foot. Turn
around, don't drown.

&&

This warning may need to be extended beyond 715 PM HST if heavy rain
persists.

LAT...LON 2064 15607 2063 15622 2059 15630 2059 15642
      2064 15646 2079 15647 2081 15663 2093 15670
      2101 15667 2104 15660 2090 15648 2095 15633
      2094 15625 2082 15611 2080 15601 2073 15599

$$

Kodama

764 
WGHW70 PHFO 130342
FFSHFO

Flash Flood Statement
National Weather Service Honolulu HI
542 PM HST WED SEP 12 2018

HIC009-130350-
/O.CAN.PHFO.FF.W.0055.000000T0000Z-180913T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maui HI-
542 PM HST WED SEP 12 2018

...THE FLASH FLOOD WARNING FOR THE ISLAND OF MAUI IN MAUI COUNTY IS
CANCELLED...

Heavy rainfall has diminished across Maui. Runoff levels are still 
elevated in some areas, including Lower Honoapiilani Road in west 
Maui, and Ulaino Road and Waikoloa Road near Hana.

A Flash Flood Watch remains in effect for Maui County through 
Thursday night.

LAT...LON 2064 15607 2063 15622 2059 15630 2059 15642
      2064 15646 2079 15647 2081 15663 2093 15670
      2101 15667 2104 15660 2090 15648 2095 15633
      2094 15625 2082 15611 2080 15601 2073 15599

$$

Kodama

Area Forecast Discussion...CORRECTED
National Weather Service Honolulu HI
612 AM HST Wed Sep 12 2018

.SYNOPSIS...
Tropical Storm Olivia will move through Maui County this morning,
pass south of Oahu and Kauai through this evening, then move away
to the west. A low aloft north of the islands will move southwest,
passing northwest of Kauai on Thursday. Instability from this low
combined with moisture from Olivia will keep the weather wet through
at least early Friday. A surface high will build far northeast of
the state early next week and drier air will spread west across
the islands over the weekend.

&&

.DISCUSSION...
As of 430 am HST, Olivia's low level circulation was a few miles
off Maui's windward coast. The center of Olivia is expect to move
through Maui in the next couple of hours, ushering in more rain
and winds to not only Maui but the entire county itself. The
movement is west at about 12 mph. So, neighboring Oahu, will also
be affected to an extent.

Looking back during the past 10 hours or so, the winds and rain
picked up considerably, especially Maui County. This has led to a
flood advisory for windward Maui, which is on going. Winds have
been blowing hard with a peak wind of 30 mph and peak gusts of 39
mph at Kahului Airport. The wind gage at Lanai hit 37 mph and a
peak gusts at 52 mph. The winds should start to wind down this
afternoon, trending to moderate to strong speeds tonight.

Maui has been the wettest thus far. Rainfall amounts in the past
12 hours ending at 2 am HST include 3.24 inches at Puu Kukui on
the northeast side of windward Haleakala Maui, and 3.73 inches at
West Wailuaiki. Molokai has been wet as well with Puu Alii coming
in at 1.92 inches. Oahu has been damp confined mainly to the
windward and mountain areas. Manoa Lyon Arboretum was the wettest,
reporting 48 hundredths of an inch.

Although the Big Island has been dropped from the tropical storm
threat, the island remains under a Flash Flood Watch. Daytime
heating under a moist unstable air mass will lead to locally heavy
rains including the slight chance of a thunderstorm this
afternoon.

The approaching upper level low will prolong the unsettled weather
through at least Thursday night. Heavier rains and thunderstorms
are likely to occur from tonight into Thursday as the upper low
draws closer to the islands. The upper low is currently 560 miles
NE of Kauai, and should be 450 miles NE of Kauai this afternoon.
The closest point the low is to the islands will come Thursday
afternoon, about a hundred miles NW of Kauai. With this
assessment, the heavier weather is likely to continue into
Thursday. A Flood Watch remains in effect for all islands through
Thursday night, and could be extended into Friday.

The atmosphere will gradually dry out and stabilize as the
moisture from Olivia and the low aloft move away to the west. This
is likely to occur over the upcoming weekend.

Please see the Hurricane Local Statement (HLSHFO) and Local
Watch/Warning Statement (TCVHFO) on our website for detailed
weather information about Olivia and expected impacts to your
local area. The Central Pacific Hurricane Center also posts the
latest Olivia Forecast Advisory tracks at weather.gov/cphc

&&

.AVIATION...
Tropical Storm Olivia continues to move westward around 7 MPH
just 70 miles east-northeast of Maui this morning. Rain bands
associated with Olivia continue to produce moderate to heavy
showers across much of the state. IFR conditions are forecast
across Maui, Molokai and Lanai this morning. MVFR conditions are
forecast over windward and mountain slopes of Kauai and Oahu
through the day. Expect less coverage of low cloud ceilings and
showers over the Big Island today with MVFR ceilings moving in
later this evening. Frequent showers are favoring windward and
mountain areas with scattered to numerous showers over leeward
sections. Wind speeds will continue increasing through the day
with wind gusts already reported over Lanai (PHNY) at 45 KTS this
morning. Isolated thunderstorms are possible today as Olivia
moves through the island chain.

AIRMET SIERRA for mountain obscuration was expanded this evening
to include all island mountains and north through east sections.
AIRMET Tango remains in effect for strong winds producing moderate
low level turbulence over and south through west of mountains over
all islands.

SIGMET NOVEMBER associated with Tropical Storm Olivia is
currently posted over the Hawaiian Islands.

&&

.MARINE...
As Tropical Storm Olivia begins to directly affect the islands,
winds will be on the increase. For the latest on Olivia, please
monitor the forecast and advisory packages from the Central
Pacific Hurricane Center.

Swell from Olivia has been spreading westward across the state.
Surf has been increasing and has already reached warning levels in
coastal sections of windward Big Island, and is expected to reach
warning levels along east facing shores from Maui to Oahu through
today. A High Surf Warning (HSW) remains in effect for east
facing shores of the Big Island, Maui, Molokai, and Oahu through
the day. Lower surf is expected for east facing shores of Lanai
and Kauai, so a High Surf Advisory (HSA) has been issued for those
areas through the same time period. Surf is expected to decline
fairly rapidly as Olivia exits the local waters.

A small northwest swell is expected to fill in late today and
peak Thursday. A small south swell is likely over the weekend,
with another small northwest swell expected late in the weekend
and early next week.

The morning coastal waters forecast will be delayed as we
incorporate the latest forecast information for Olivia.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Tropical Storm Warning for Oahu-Molokai-Lanai-Kahoolawe-Maui.

Flash Flood Watch through late Thursday night for all Hawaii
islands.

High Surf Warning until 6 PM HST this evening for Oahu South
Shore-Oahu Koolau-Olomana-Molokai-Maui Windward West-Maui
Central Valley-Windward Haleakala-South Big Island-Big Island
North and East.

Wind Advisory until 6 AM HST Thursday for Niihau-Kauai.

High Surf Advisory until 6 PM HST this evening for Kauai
Windward-Lanai Makai.

Tropical Storm Warning for Kauai Leeward Waters-Kauai Channel-
Oahu Windward Waters-Oahu Leeward Waters-Kaiwi Channel-Maui
County Windward Waters-Maui County Leeward Waters-Maalaea Bay-
Pailolo Channel-Alenuihaha Channel-Big Island Windward Waters.

Small Craft Advisory until 6 PM HST this evening for Big Island
Leeward Waters-Big Island Southeast Waters.

Small Craft Advisory until 6 AM HST Thursday for Kauai Northwest
Waters-Kauai Windward Waters.

&&

DISCUSSION...H Lau
AVIATION...Bohlin
MARINE...Kinel