Special Marine Warning
NWS Juneau AK ยท US
New
This event was updated at .
Details
Special Marine Warning Issued September 20 At 12:59PM AKDT Until September 20 At 2:00PM 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... Southern Stephens Passage... Frederick Sound... * Until 200 PM AKDT. * At 1259 PM AKDT, a strong thunderstorm was located near Cape Fanshaw, moving north at 25 knots.
Hazard
Wind gusts to nearly 50 knots over the water.
Source
Satellite imagery indicated.
Impacts
Small craft could be capsized in suddenly higher winds and higher waves.
Locations impacted
Hobart Bay, Cape Fanshaw, Five Finger Light and Tracy Arm Entrance.
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
- Stephens Passage
- Frederick Sound
Public contact
- Issuer
- NWS Juneau AK
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~51s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M309WF7FBYR3VW01XB6N11M9
- Identifier
- urn:oid:2.49.0.1.840.0.a91a240e3c64282bc749f6f5f5f4a8c219c5abb7.001.1
- 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.4938
- 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 202059 |
| eventMotionDescription | 2026-09-20T20:58:00-00:00...storm...196DEG...25KT...57.22,-133.46 |
| maxWindGust | 50 knots |
| maxHailSize | 0.00 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.PAJK.MA.W.0004.260920T2059Z-260920T2200Z/ |
| eventEndingTime | 2026-09-20T14:00:00-08:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Stephens Passage
- Frederick Sound
| Name | Value |
|---|---|
| SAME | 058031 |
| SAME | 058034 |
| UGC | PKZ031 |
| UGC | PKZ034 |
- Polygons
- 57.13,-133.79 58.05,-133.75 57.76,-132.81 57.7,-132.75 57.62,-132.66 57.5,-132.55 57.47,-132.52 57.04,-132.94 57.13,-133.79