Areal Flood Advisory, Flash Flood Watch, High Surf Warning
7:58 PM HST
National Weather Service
The National Weather Service in Honolulu has issued a
* Flood Advisory for...
the island of Hawaii in Hawaii County
* until 1100 PM HST
* at 756 PM HST... radar indicated a large area of moderate to
locally heavy rain extending from South Point along the coast of
the Kau and puna districts. This area of rain is moving slowly to
the north. Rainfall rates of 1 to 2 inches per hour will be
* Locations in the advisory include but are not limited to...
kawa Flats... Mountain view... Naalehu... Hawaiian Ocean View...
Pahoa... Volcano... Pahala and Hawaii Volcanoes National Park.
Stay away from streams... drainage ditches and low lying areas prone
Rainfall and runoff will also cause hazardous driving conditions due
to ponding... reduced visibility and poor braking action.
Do not cross fast flowing or rising water in your vehicle... or on
foot. Turn around... don't drown.
This advisory may need to be extended beyond 1100 PM HST if heavy
A Flash Flood Watch is also in effect for The Big Island of Hawaii
through Sunday afternoon.
Lat... Lon 1897 15572 1903 15587 1957 15549 1949 15482
1934 15499 1927 15516 1927 15529 1921 15536
1913 15551 1908 15556 1904 15556 1891 15568
605 PM HST Sat Jul 23 2016
... Flash Flood Watch remains in effect through Sunday afternoon...
The Flash Flood Watch continues for
* Kahoolawe... Lanai... Maui... Molokai and The Big Island
* through Sunday afternoon.
* Passing rainbands will bring periods of showers. There is a
chance for intense downpours or thunderstorms to develop
tonight... mainly near The Big Island... spreading to Maui County
late tonight. If heavier storms develop... they could cause
significant flash flooding. Storm total rainfall amounts of 8 to
12 inches... with isolated amounts up to 15 inches in higher
terrain... are possible.
* In addition to flood prone areas... heavy rain events of this
size may cause flooding in areas outside designated flood zones. Low
spots in roads can become dangerous and impassable due to severe
runoff. High amounts of debris in streams and gulches may clog
bridges and culverts resulting in dangerous flooding which could
occur outside the normal channels... and could also lead to
significant property damage.
A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is very dangerous.
You should monitor later forecasts and get prepared for flash
flooding this weekend. Never drive into areas where water covers
the Road. Turn around... Don/T drown.
408 PM HST Sat Jul 23 2016
... High surf warning now in effect until 6 PM HST Sunday for east
facing shores of The Big Island and Maui...
* surf... 15 to 20 feet tonight... lowering to 10 to 15 feet Sunday.
* Timing... through 6 PM HST Sunday.
* Impacts... very high... expect ocean water surging and sweeping
across beaches... coastal benches... and lava flows creating the
potential for impacts to coastal properties and
infrastructure... including roadways. Powerful longshore and
rip currents will be present at most beaches. Large breaking
waves and strong currents may impact Harbor entrances and
channels causing challenging boat handling.
Large breaking surf... significant shorebreak... and dangerous
currents make entering the water very hazardous. Anyone entering
the water could face significant injury or death.