Special Marine Warning for Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM
Official alert fields
What you need to know
- Effective
- Ended
- Official severity
- Severe
- Official urgency
- Immediate
- Official certainty
- Likely
What is happening
SMWBOX The National Weather Service in Boston/Norton has issued a * Special Marine Warning for... Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM... * Until 515 AM EDT. * At 438 AM EDT, a strong thunderstorm was located 53 nm south of The Coastal Waters South Of Nantucket, moving east at 20 knots....
What the bulletin says to do
Move to safe harbor until hazardous weather passes.
Full official description
Bulletin details
SMWBOX The National Weather Service in Boston/Norton has issued a * Special Marine Warning for... Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM... * Until 515 AM EDT. * At 438 AM EDT, a strong thunderstorm was located 53 nm south of The Coastal Waters South Of Nantucket, moving east at 20 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * The strong thunderstorm will remain over mainly open waters.
Lifecycle record
Official revisions
- Alert
Special Marine Warning issued August 12 at 4:39AM EDT until August 12 at 5:15AM EDT by NWS Boston/Norton MA
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Boston/Norton MA. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected