Special Marine Warning
NWS Juneau AK ยท US
Details
Special Marine Warning Remains In Effect Until 315 PM AKDT
- Event
- Special Marine Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Description
Overview
For the following areas... Cape Decision to Cape Edgecumbe out to 15 NM... At 252 PM AKDT, The cluster of strong thunderstorms was located 20 NM south of Biorka Island, moving east and northeast at 30 knots. These storms have weakened slightly over the past several minutes, but are still capable of producing sudden winds to near 40 knots and occasional lightning strikes.
Hazard
Wind gusts to 40 knots.
Source
Radar indicated.
Impacts
Small craft could be capsized in the suddenly higher winds and higher waves associated with this cluster of thunderstorms. Locations impacted include... Whale Bay and Biorka Island.
Instructions
Move to safe harbor until hazardous weather passes. Boaters should seek safe harbor immediately until this storm passes. Wind gusts 34 knots or greater, high waves, dangerous lightning, and heavy rain are possible with this storm.
Affected areas
- Cape Decision to Cape Edgecumbe out to 15 NM
Public contact
- Issuer
- NWS Juneau AK
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~26s
- CAP status
- Actual
- CAP message type
- Update
- Lifecycle
- Updated
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M30GAKP8HSPRK0HBB2QF3JF6
- Identifier
- urn:oid:2.49.0.1.840.0.74668f4520468c16670bdd7a5699d21d9de67976.002.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Juneau AK
- AWIPS ID
- CAPAJK
- NWWS sequence
- nwws_processor.8093
- WMO heading
- XOAK57
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- Alaska (AK)
- WMO bulletin number
- 57
References
- Sender
- w-nws.webmaster@noaa.gov
- Sent
Event codes
| Name | Value |
|---|---|
| SAME | NWS |
| NationalWeatherService | MAW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | MWSAJK |
| WMOidentifier | FZAK77 PAJK 202252 |
| NWSheadline | SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 315 PM AKDT |
| eventMotionDescription | 2026-09-20T22:17:00-00:00...storm...223DEG...35KT...56.34,-135.78 |
| maxWindGust | 40 knots |
| maxHailSize | 0.00 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| VTEC | /O.CON.PAJK.MA.W.0005.000000T0000Z-260920T2315Z/ |
| eventEndingTime | 2026-09-20T15:15:00-08:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Cape Decision to Cape Edgecumbe out to 15 NM
| Name | Value |
|---|---|
| SAME | 058642 |
| UGC | PKZ642 |
- Polygons
- 56.66,-135.86 57.14,-135.49 56.31,-134.67 56.2,-135.29 56.36,-135.41 56.5,-135.54 56.58,-135.67 56.66,-135.86