Special Marine Warning for Mona Passage Southward to 17N
Official alert fields
What you need to know
- Applies to
- Mona Passage Southward to 17N
- Effective
- Ended
- Official severity
- Severe
- Official urgency
- Immediate
- Official certainty
- Likely
What is happening
SMWSJU The National Weather Service in San Juan has issued a * Special Marine Warning for... Mona Passage Southward to 17N... * Until 345 PM AST. * At 249 PM AST, a severe thunderstorm capable of producing waterspouts was located over the Mona Passage, moving west at 10 knots. HAZARD...Waterspouts and wind gusts 34...
What the bulletin says to do
Move to safe harbor immediately as gusty winds and high waves are expected. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. Report severe weather to the Coast Guard or the National Weather Service.
Full official description
Bulletin details
SMWSJU The National Weather Service in San Juan has issued a * Special Marine Warning for... Mona Passage Southward to 17N... * Until 345 PM AST. * At 249 PM AST, a severe thunderstorm capable of producing waterspouts was located over the Mona Passage, moving west at 10 knots. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * The severe thunderstorm will remain over mainly open waters.
Lifecycle record
Official revisions
- Alert
Special Marine Warning issued August 19 at 2:50PM AST until August 19 at 3:45PM AST by NWS San Juan PR
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS San Juan PR. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected