Big Island North and East Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

High Surf Advisory, Flash Flood Watch
Issued: 3:39 PM HST Oct. 20, 2018 – National Weather Service

... High surf advisory remains in effect until 6 PM HST Monday...

* surf... 8 to 12 feet through Sunday and 6 to 8 feet on Monday
along south facing shores of all islands.

* Timing... continuing through Sunday, then slowly diminishing on
Monday.

* Impacts... moderate... expect strong breaking waves, shore
break, and rip currents making swimming difficult and
dangerous.

Precautionary/preparedness actions...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution. Know your limits and
seek ocean recreation areas best suited for your abilities.



Foster


338 PM HST Sat Oct 20 2018

... Flash Flood Watch now in effect through tonight...

The Flash Flood Watch is now in effect for

* Kahoolawe, Lanai, Maui, Molokai and The Big Island.

* Through tonight.

* An upper-level trough will enhance the deep moisture already in
place. Slow-moving and persistent heavy showers and
thunderstorms will result in the threat of flash flooding.

* Heavy rainfall could result in low spots in roads becoming
dangerous and impassible due to severe runoff. Debris in
streams and gulches could clog bridges and culverts resulting
in dangerous flooding. Isolated landslides could also occur.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions are favorable for flash
flooding. Flash flooding is life threatening. Do not cross fast
flowing water in your vehicle or on foot.

Monitor later forecasts and be prepared to take action if a Flash
Flood Warning is issued. If you experience heavy rain or rising
water, head to higher ground immediately.




High Surf Advisory, Flash Flood Watch
Issued: 3:39 PM HST Oct. 20, 2018 – National Weather Service

... High surf advisory remains in effect until 6 PM HST Monday...

* surf... 8 to 12 feet through Sunday and 6 to 8 feet on Monday
along south facing shores of all islands.

* Timing... continuing through Sunday, then slowly diminishing on
Monday.

* Impacts... moderate... expect strong breaking waves, shore
break, and rip currents making swimming difficult and
dangerous.

Precautionary/preparedness actions...

Beachgoers, swimmers, and surfers should heed all advice given by
ocean safety officials and exercise caution. Know your limits and
seek ocean recreation areas best suited for your abilities.



Foster


338 PM HST Sat Oct 20 2018

... Flash Flood Watch now in effect through tonight...

The Flash Flood Watch is now in effect for

* Kahoolawe, Lanai, Maui, Molokai and The Big Island.

* Through tonight.

* An upper-level trough will enhance the deep moisture already in
place. Slow-moving and persistent heavy showers and
thunderstorms will result in the threat of flash flooding.

* Heavy rainfall could result in low spots in roads becoming
dangerous and impassible due to severe runoff. Debris in
streams and gulches could clog bridges and culverts resulting
in dangerous flooding. Isolated landslides could also occur.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions are favorable for flash
flooding. Flash flooding is life threatening. Do not cross fast
flowing water in your vehicle or on foot.

Monitor later forecasts and be prepared to take action if a Flash
Flood Warning is issued. If you experience heavy rain or rising
water, head to higher ground immediately.