Hawaii, HI Severe Weather Alertstar_ratehome

...FLASH FLOOD EMERGENCY FOR NORTHERN OAHU...

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
The island of Oahu in Honolulu County

* Until 500 PM HST.

* At 131 PM HST, emergency management reported ongoing flood impacts
in the North Shore areas. The Wahiawa Reservoir and area streams
remain elevated as well. Additional areas of heavy rain are
expected over the next few hours which could exacerbate existing
flooding and cause additional rises in stream and reservoir water
levels.

This is a FLASH FLOOD EMERGENCY for Northern Oahu. This is a
PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW!

HAZARD...Heavy rain producing life threatening flash flooding.

SOURCE...Emergency management.

IMPACT...Severe flooding in drainages, streams, rivers, roads,
properties, and other low lying areas. Numerous public
road closures in effect, as well as landslides in
steep terrain. Significant property damage is ongoing
for homes and other properties in low lying areas and
is likely to continue with additional heavy rain.

* Some locations that will experience flash flooding include...
northern half of Oahu, along and north of a line from Waianae
Valley to Mililani Mauka to Waiahole.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now! This is an extremely dangerous and
life-threatening situation. Do not attempt to travel unless you are
fleeing an area subject to flooding or under an evacuation order.

Stay away from streams, rivers, drainage ditches, and culverts, even
if they are currently dry.

The heavy rains may cause rock and mudslides in steep terrain areas.

&&

This warning may need to be extended beyond 500 PM HST if flooding;
persists.;


FLASH FLOOD...OBSERVED;
FLASH FLOOD DAMAGE THREAT...CATASTROPHIC

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
A Dam Failure on the Kaukonahua Stream below Wahiawa Dam on...
The island of Oahu in Honolulu County

* Until 115 PM HST Saturday.

* At 105 PM HST, emergency management reported the imminent failure
of Wahiawa Dam.

HAZARD...Flash flooding from the imminent failure of Wahiawa
Dam.

SOURCE...Emergency management.

IMPACT...Flooding of areas downstream from the Wahiawa Dam
along the Kaukonahua Stream.

* The nearest downstream area from the dam is Waialua, Haleiwa, and
Kaukonahua Stream.

This includes the following streams and drainages...
Poamoho Stm- Dole Fields, Poamoho Stm- Kaukonahua Hwy, Kaukonahua
Stm- Schofield, Mohiakea Gul, Waialua Town, Kaukonahua Stm- N Fork
Wahiawa, Kaukonahua Stm- Wahiawa, Kiikii Stm- Waialua,
Helemano/Opaeula Stm- Haleiwa, Kaukonahua Stm- Waialua and Anahulu
R- Haleiwa.
Flooding is occurring along the Kaukonahua Stream.

This warning may need to be extended beyond 115 PM HST Saturday if
flooding persists.

&&


FLASH FLOOD...OBSERVED;
DAM FAILURE...IMMINENT

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
The island of Oahu in Honolulu County

* Until 400 PM HST.

* At 1255 PM HST, radar indicated heavy rain continuing to move over
east Oahu. Rain was generally falling at a rate of 1 to 2 inches
per hour. Due to elevated stream levels, lingering rain, and the
potential for additional heavy showers moving in, the warning will
be extended.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Radar.

IMPACT...Flooding in drainages, streams, rivers, roads,
properties, and other low-lying areas. Public road
closures possible in some areas. Landslides are
possible in steep terrain.

* Some locations that will experience flash flooding include...
Honolulu, Waipio, Moanalua, Halawa, Salt Lake, Aiea, Kalihi, Pearl
City, Ahuimanu, Iroquois Point, Manoa, Kahaluu, Kaneohe, Waiahole,
Waipahu, Waikele, Palolo, Maunawili, Waikane and Ewa Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay away from streams, rivers, drainage ditches, and culverts, even
if they are currently dry.

Excessive runoff from heavy rainfall will cause flooding of drainage
ditches and streams, streets, highways, properties, and other low
lying spots.

&&

This warning may need to be extended beyond 400 PM HST if flooding;
persists.;


FLASH FLOOD...RADAR INDICATED

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...The island of Oahu, Molokai, Lanai, Kahoolawe, Maui, and
the Big Island.

* WHEN...Through Sunday afternoon.

* IMPACTS...Significant flooding may occur due to the overflow of
streams and drainages. Roads in several areas may be closed, along
with property damage in urban or low lying spots due to runoff.
Landslides may also occur in areas with steep terrain.

* ADDITIONAL DETAILS...
- A kona low developing west of the islands will draw abundant
moisture northward as it strengthens and eventually departs
to north early next week. Several rounds of moderate to heavy
rainfall and thunderstorms are expected. The heaviest rain is
expected to last through Saturday, except for the Big Island
where the heaviest rain is expected on Sunday.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&