Special Marine Warning
NWS Juneau AK ยท US
Details
Special Marine Warning Issued September 20 At 2:17PM AKDT Until September 20 At 3:15PM AKDT By NWS Juneau AK
- Event
- Special Marine Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Description
Overview
SMWAJK The National Weather Service in Juneau has issued a * Special Marine Warning for... Cape Decision to Cape Edgecumbe out to 15 NM... Cape Decision to Cape Edgecumbe from 15 to 80 NM... * Until 315 PM AKDT. * At 217 PM AKDT, a cluster of strong thunderstorms was located 33 NM south of Biorka Island, or 38 NM west of Little Port Walter, moving northeast at 35 knots.
Hazard
Wind gusts to 45 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
Biorka Island and Whale Bay.
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
- Cape Decision to Cape Edgecumbe from 15 to 80 NM
Public contact
- Issuer
- NWS Juneau AK
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~59s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M30EBHXMDY7GJ7NGX3Z6X6GM
- Identifier
- urn:oid:2.49.0.1.840.0.729e2fb60e62871dffe85856a1d49c30d8aa13ec.001.1
- 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.7298
- WMO heading
- XOAK57
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- Alaska (AK)
- WMO bulletin number
- 57
Event codes
| Name | Value |
|---|---|
| SAME | SMW |
| NationalWeatherService | MAW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | SMWAJK |
| WMOidentifier | WHAK57 PAJK 202217 |
| eventMotionDescription | 2026-09-20T22:16:00-00:00...storm...223DEG...35KT...56.33,-135.8 |
| maxWindGust | 40 knots |
| maxHailSize | Up to .75 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.PAJK.MA.W.0005.260920T2217Z-260920T2315Z/ |
| eventEndingTime | 2026-09-20T15:15:00-08:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Cape Decision to Cape Edgecumbe out to 15 NM
- Cape Decision to Cape Edgecumbe from 15 to 80 NM
| Name | Value |
|---|---|
| SAME | 058642 |
| SAME | 058662 |
| UGC | PKZ642 |
| UGC | PKZ662 |
- Polygons
- 56.32,-136.27 57.14,-135.49 56.31,-134.67 56.04,-135.92 56.32,-136.27