Special Marine Warning
NWS Juneau AK ยท US
New
This event was updated at .
Details
Special Marine Warning Issued September 20 At 9:33AM AKDT Until September 20 At 10:00AM 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... Cross Sound... Cape Edgecumbe to Cape Spencer out to 15 NM... Cape Spencer to Cape Fairweather out to 15 NM... * Until 1000 AM AKDT. * At 933 AM AKDT, a strong thunderstorm was located near Graves Harbor, or near Cape Spencer, moving north at 30 knots.
Hazard
Wind gusts to 40 knots.
Source
Radar indicated.
Impacts
Small craft could be damaged in briefly higher winds and suddenly higher waves.
Locations impacted
Graves Harbor and Cape Spencer.
Instructions
Move to safe harbor until hazardous weather passes. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects.
Affected areas
- Cross Sound
- Cape Edgecumbe to Cape Spencer out to 15 NM
- Cape Spencer to Cape Fairweather out to 15 NM
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
- 01M2ZY38NXJF4206H81DGVZJ6A
- Identifier
- urn:oid:2.49.0.1.840.0.5c674eab9382964f319fd66baeedf814792207fc.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.7891
- 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 201733 |
| eventMotionDescription | 2026-09-20T17:33:00-00:00...storm...192DEG...32KT...58.22,-136.77 |
| maxWindGust | 40 knots |
| maxHailSize | Up to .75 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.PAJK.MA.W.0001.260920T1733Z-260920T1800Z/ |
| eventEndingTime | 2026-09-20T10:00:00-08:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Cross Sound
- Cape Edgecumbe to Cape Spencer out to 15 NM
- Cape Spencer to Cape Fairweather out to 15 NM
| Name | Value |
|---|---|
| SAME | 058022 |
| SAME | 058643 |
| SAME | 058644 |
| UGC | PKZ022 |
| UGC | PKZ643 |
| UGC | PKZ644 |
- Polygons
- 58.15,-137.02 58.49,-136.93 58.39,-136.3 58.07,-136.66 58.15,-137.02