Flood Watch
NWS Honolulu HI ยท US
Details
Flood Watch In Effect From Wednesday Afternoon Through Saturday Afternoon
- Event
- Flood Watch
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Future
- Severity
- Severe
- Certainty
- Possible
- Response
- Prepare
Description
Overview
A potential tropical cyclone is expected to bring heavy rain to the eastern end of the state over the coming days. The track of this potential storm is uncertain, but heavry rain is likely.
What
Flash flooding caused by excessive rainfall is possible.
Where
Maui, Lanai, Molokai, The Big Island and Kahoolawe.
When
From Wednesday afternoon through Saturday afternoon.
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
- Heavy rain on the north side of a developing tropical system (the future Nolo) should develop Wednesday afternoon. Windward and southeast Big Island and windward Maui are the most likely to experience heavy rain. However, other islands in Maui County are at risk as well, and therefore are included in the watch. Very high rainfall rates, which can cause flash flooding, are possible within the entire watch area.
Instructions
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Affected areas
- Lanai Mauka
- Kahoolawe
- Maui Windward West
- Maui Leeward West
- Haleakala Summit
- Kona
- Kohala
- Big Island Interior
- Big Island Summit
- 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
- ~45s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M35VS113NGYV7SGZ995YX8FA
- Identifier
- urn:oid:2.49.0.1.840.0.59599f54f3e9e47644ed14ad1fd6294e24114766.001.1
- 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.1281
- 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 230048 |
| NWSheadline | FLOOD WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH SATURDAY AFTERNOON |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.PHFO.FA.A.0013.260923T2200Z-260927T0400Z/ |
| eventEndingTime | 2026-09-26T18:00:00-10:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Lanai Mauka
- Kahoolawe
- Maui Windward West
- Maui Leeward West
- Haleakala Summit
- Kona
- Kohala
- Big Island Interior
- Big Island Summit
- 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 | 015009 |
| SAME | 015001 |
| UGC | HIZ015 |
| UGC | HIZ016 |
| UGC | HIZ017 |
| UGC | HIZ018 |
| UGC | HIZ022 |
| UGC | HIZ023 |
| UGC | HIZ026 |
| UGC | HIZ027 |
| UGC | HIZ028 |
| 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 |