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Live map / News & alerts / Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA ← Back to live map
🏛 Official alert Special Marine Warning Weather & disasters Serious

Special Marine Warning

N Issued by NWS Baltimore MD/Washington DC ⏳ In force until Sat 17 Oct, 05:15 📍 Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA (approximate) 🕑 2 h ago
🌐 Translate: ·

For the following areas... Tidal Potomac from Cobb Island MD to Smith Point VA... Tidal Potomac from Indian Head to Cobb Island MD... At 942 PM EDT, strong thunderstorms were located along a line extending from near Port Tobacco River to Colonial Beach to 15 nm southwest of Westmoreland State Park, moving east at 40 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT.…

🗃 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 ▾
⚠
SeveritySevere
⏱
UrgencyImmediate
❓
CertaintyLikely
EventSpecial Marine Warning
Response typeAvoid
CategoryMet
Affected areaTidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA
Issuing authorityNWS Baltimore MD/Washington DC
ContactNot supplied

🕓 Alert timing · EAT

Sent2026-10-16T21:42:00-04:00
Effective2026-10-16T21:42:00-04:00
Onset2026-10-16T21:42:00-04:00
Expires2026-10-16T22:15:00-04:00

📋 Official instructions

Move to safe harbor until hazardous weather passes.

📄 Message details

Alert identifierurn:oid:2.49.0.1.840.0.b23bdb1f689983eff71654d8d3e1839e1689d45e.001.1
Message typeUpdate
Senderw-nws.webmaster@noaa.gov
ScopePublic
CAP statusActual
Related messagesurn:oid:2.49.0.1.840.0.19e25fa51c5077ad086dafc3a2840f02f743da3c.001.1
ⓘ CAP fields populate when an official alert is linked.

🛡 Safety advice

General guidance for this type of incident - not official instructions.
  • Move to safe harbor until hazardous weather passes.
  • 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:
  • For the following areas...
  • Tidal Potomac from Cobb Island MD to Smith Point VA...
  • Tidal Potomac from Indian Head to Cobb Island MD...
  • At 942 PM EDT, strong thunderstorms were located along a line extending from near Port Tobacco River to Colonial Beach to 15 nm southwest of Westmoreland State Park, moving east at 40 knots.
  • HAZARD...Wind gusts 34 knots or greater.
  • SOURCE...Radar indicated.
  • IMPACT.…
ⓘ News summary · read the original report for full context.

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