Special Marine Warning
N
Issued by NWS Seattle WA
⏳ In force until Sat 31 Oct, 16:45 📍 Waters From James Island To Point Grenville 10 To 60 Nm; Coastal Waters From Point Grenville To Cape Shoalwater 10 To 6… (approximate) 🕑 1 h ago
SMWSEW The National Weather Service in Seattle has issued a * Special Marine Warning for... Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm... Waters From James Island To Point Grenville 10 To 60 Nm... * Until 645 AM PDT. * At 619 AM PDT, a severe thunderstorm capable of producing waterspouts was located 27 nm west of Point Grenville, moving north at 10 knots. HAZARD...Waterspo…
🗃 Archived report - it is no longer on the live map. Pages are kept for 30 days.
📡 CAP alert details
Common Alerting Protocol
Official alert linked
▾
📡 CAP alert details
Common Alerting Protocol
⚠
SeveritySevere
⏱
UrgencyImmediate
❓
CertaintyLikely
EventSpecial Marine Warning
Response typeAvoid
CategoryMet
Affected areaWaters From James Island To Point Grenville 10 To 60 Nm; Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
Issuing authorityNWS Seattle WA
ContactNot supplied
🕓 Alert timing · EAT
Sent2026-10-31T06:19:00-07:00
Effective2026-10-31T06:19:00-07:00
Onset2026-10-31T06:19:00-07:00
Expires2026-10-31T06:45:00-07:00
📋 Official instructions
Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately.📄 Message details
Alert identifierurn:oid:2.49.0.1.840.0.9296fa8d364304900bfd0e89ef1846b71e525af8.001.1
Message typeAlert
Senderw-nws.webmaster@noaa.gov
ScopePublic
CAP statusActual
Related messagesNot supplied
ⓘ CAP fields populate when an official alert is linked.
🛡 Safety advice
General guidance for this type of incident - not official instructions.
- Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately.
- Stay aware of your surroundings in this area.
- Follow official updates from the police and local authorities.
- In an emergency call 112 (police) or 112 (ambulance), or request help through Jilinde.
📰 Story summary
From the report shown in the feed:
- SMWSEW The National Weather Service in Seattle has issued a * Special Marine Warning for...
- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm...
- Waters From James Island To Point Grenville 10 To 60 Nm...
- * Until 645 AM PDT.
- * At 619 AM PDT, a severe thunderstorm capable of producing waterspouts was located 27 nm west of Point Grenville, moving north at 10 knots.
- HAZARD...Waterspo…
ⓘ News summary · read the original report for full context.
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