Flood Watch
NWS Honolulu HI ยท US
Details
Flood Watch In Effect Through 6 AM Friday
- Event
- Flood Watch
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Future
- Severity
- Severe
- Certainty
- Possible
- Response
- Prepare
Description
Overview
Remnant moisture from former Tropical Storm Norbert will bring periods of moderate to heavy showers to the Hawaiian Islands tonight through Friday morning.
What
Flash flooding caused by excessive rainfall is possible.
Where
Kauai, Niihau, Maui, Lanai, Molokai, The Big Island and Kahoolawe.
When
Through early Friday morning.
Impacts
Flood prone roads and other low lying areas may be closed due to elevated runoff and overflowing streams. Urban areas may receive more significant flooding and property damage due to rapid runoff.
Additional details
- A band of remnant moisture from Norbert will move east across the islands tonight into Friday, bringing moderate to locally heavy showers. There is a slight chance of thunderstorms on Thursday as well, which could produce briefly higher rain rates, increasing the risk of flash flooding.
Instructions
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Affected areas
- Niihau
- Kauai Southwest
- Kauai Mountains
- Waianae Coast
- Oahu North Shore
- Olomana
- Central Oahu
- Waianae Mountains
- Lanai Mauka
- Kahoolawe
- Maui Windward West
- Maui Leeward West
- Haleakala Summit
- Kona
- Kohala
- Big Island Interior
- Big Island Summit
- Kauai North
- Kauai East
- Kauai South
- East Honolulu
- Honolulu Metro
- Ewa Plain
- Koolau Windward
- Koolau Leeward
- Molokai Windward
- Molokai Southeast
- Molokai North
- Molokai West
- Molokai Leeward South
- Lanai Windward
- Lanai Leeward
- Lanai South
- Maui Central Valley North
- Maui Central Valley South
- Windward Haleakala
- Kipahulu
- South Maui/Upcountry
- South Haleakala
- Big Island South
- Big Island Southeast
- Big Island East
- Big Island North
Public contact
- Issuer
- NWS Honolulu HI
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~44s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M2PGDR7T4CXZFCFKA8EB7XEC
- Identifier
- urn:oid:2.49.0.1.840.0.7b0791a98da5b2051b44577526918dda9d06e0cb.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Honolulu HI
- AWIPS ID
- CAPHFO
- NWWS sequence
- nwws_processor.2429
- WMO heading
- XOHW50
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- Hawaiian Islands (HW)
- WMO bulletin number
- 50
Event codes
| Name | Value |
|---|---|
| SAME | FFA |
| NationalWeatherService | FAA |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | FFAHFO |
| WMOidentifier | WGHW60 PHFO 170141 |
| NWSheadline | FLOOD WATCH IN EFFECT THROUGH 6 AM FRIDAY |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.PHFO.FA.A.0012.260917T0400Z-260918T1600Z/ |
| eventEndingTime | 2026-09-18T06:00:00-10:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Niihau
- Kauai Southwest
- Kauai Mountains
- Waianae Coast
- Oahu North Shore
- Olomana
- Central Oahu
- Waianae Mountains
- Lanai Mauka
- Kahoolawe
- Maui Windward West
- Maui Leeward West
- Haleakala Summit
- Kona
- Kohala
- Big Island Interior
- Big Island Summit
- Kauai North
- Kauai East
- Kauai South
- East Honolulu
- Honolulu Metro
- Ewa Plain
- Koolau Windward
- Koolau Leeward
- Molokai Windward
- Molokai Southeast
- Molokai North
- Molokai West
- Molokai Leeward South
- Lanai Windward
- Lanai Leeward
- Lanai South
- Maui Central Valley North
- Maui Central Valley South
- Windward Haleakala
- Kipahulu
- South Maui/Upcountry
- South Haleakala
- Big Island South
- Big Island Southeast
- Big Island East
- Big Island North
| Name | Value |
|---|---|
| SAME | 015007 |
| SAME | 015003 |
| SAME | 015009 |
| SAME | 015001 |
| UGC | HIZ001 |
| UGC | HIZ003 |
| UGC | HIZ004 |
| UGC | HIZ006 |
| UGC | HIZ007 |
| UGC | HIZ009 |
| UGC | HIZ010 |
| UGC | HIZ011 |
| UGC | HIZ015 |
| UGC | HIZ016 |
| UGC | HIZ017 |
| UGC | HIZ018 |
| UGC | HIZ022 |
| UGC | HIZ023 |
| UGC | HIZ026 |
| UGC | HIZ027 |
| UGC | HIZ028 |
| UGC | HIZ029 |
| UGC | HIZ030 |
| UGC | HIZ031 |
| UGC | HIZ032 |
| UGC | HIZ033 |
| UGC | HIZ034 |
| UGC | HIZ035 |
| UGC | HIZ036 |
| UGC | HIZ037 |
| UGC | HIZ038 |
| UGC | HIZ039 |
| UGC | HIZ040 |
| UGC | HIZ041 |
| UGC | HIZ042 |
| UGC | HIZ043 |
| UGC | HIZ044 |
| UGC | HIZ045 |
| UGC | HIZ046 |
| UGC | HIZ047 |
| UGC | HIZ048 |
| UGC | HIZ049 |
| UGC | HIZ050 |
| UGC | HIZ051 |
| UGC | HIZ052 |
| UGC | HIZ053 |
| UGC | HIZ054 |