Marine Weather Statement for Maui County Windward Waters; Big Island Windward Waters
Official alert fields
What you need to know
- Effective
- Ends or expires
- Official severity
- Minor
- Official urgency
- Expected
- Official certainty
- Observed
What is happening
A moderate, long-period north swell from 350 to 360 degrees will build across Hawaiian waters and peak later today and Monday as the period shortens to 12 seconds. The swell will produce moderate to heavy surges in north-facing harbors, especially at Kahului and Hilo Harbors. Mariners using these harbors should...
What the bulletin says to do
No separate action instruction was included in this NWS record. Read the complete official bulletin and follow local authorities.
Full official description
Bulletin details
A moderate, long-period north swell from 350 to 360 degrees will build across Hawaiian waters and peak later today and Monday as the period shortens to 12 seconds. The swell will produce moderate to heavy surges in north-facing harbors, especially at Kahului and Hilo Harbors. Mariners using these harbors should exercise caution when mooring or launching vessels and when entering or leaving port. The swell will diminish Tuesday.
Official geometry where available
Alert boundary
Lifecycle record
Official revisions
- Alert
Marine Weather Statement issued November 15 at 3:13AM HST by NWS Honolulu HI
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Honolulu HI. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected