Flood Watch
NWS Honolulu HI ยท US
Details
Flood Watch Remains In Effect Through Saturday Afternoon
- Event
- Flood Watch
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Future
- Severity
- Severe
- Certainty
- Possible
- Response
- Prepare
Description
Overview
Hurricane Nolo is expected to bring heavy flooding rain to the eastern end of the state over the next few days. The exact track of the dangerous tropical cyclone remains somewhat uncertain, but significant heavy rain is likely over windward and southeast Big Island.
What
Flash flooding caused by excessive rainfall is possible.
Where
Big Island, Maui, Lanai, Molokai, and Kahoolawe.
When
Through Saturday 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
- Deep moisture on the north side of Hurricane Nolo will bring heavy showers later tonight over Big Island and spread to Maui. Windward and southeast Big Island and windward Maui are the most likely to experience heavy rain due to the slow moving tropical cyclone, with considerable flooding possible over portions of Big Island Friday and Saturday. Other islands in Maui County are at risk as well.
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
- ~50s
- CAP status
- Actual
- CAP message type
- Update
- Lifecycle
- Updated
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M3B7KVE6XA5YZSKMMVF6DFQ3
- Identifier
- urn:oid:2.49.0.1.840.0.20a785c891f972e0073d00bbea65c5d10779d95f.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.4048
- WMO heading
- XOHW50
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- Hawaiian Islands (HW)
- WMO bulletin number
- 50
References
- Sender
- w-nws.webmaster@noaa.gov
- Sent
- Sender
- w-nws.webmaster@noaa.gov
- Sent
- Sender
- w-nws.webmaster@noaa.gov
- Sent
- Sender
- w-nws.webmaster@noaa.gov
- Sent
Event codes
| Name | Value |
|---|---|
| SAME | FFA |
| NationalWeatherService | FAA |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | FFAHFO |
| WMOidentifier | WGHW60 PHFO 250251 |
| NWSheadline | FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY AFTERNOON |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.CON.PHFO.FA.A.0013.000000T0000Z-260927T0400Z/ |
| eventEndingTime | 2026-09-26T18:00:00-10:00 |
| BLOCKCHANNEL | CMAS |
| expiredReferences | w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.27c93ef1b29bda3e04166629795fe71aa61e2ea6.001.1,2026-09-23T03:44:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.59599f54f3e9e47644ed14ad1fd6294e24114766.001.1,2026-09-22T14:48:00-10:00 |
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 |