Special Marine Warning
NWS Anchorage AK ยท US
Details
Special Marine Warning Issued September 20 At 1:07AM AKDT Until September 20 At 1:30AM AKDT By NWS Anchorage AK
- Event
- Special Marine Warning
- Issued
- Effective
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Description
SMWAFC The National Weather Service in Anchorage has issued a * Special Marine Warning for... Cape Suckling to Cape Cleare from 15 to 75 NM... Gravel Point to Cape Cleare out to 15 NM... * Until 130 AM AKDT/1130 PM HST/. * At 107 AM AKDT/1107 PM HST/, Doppler radar indicated a severe thunderstorm capable of producing waterspouts, winds 34 knots or greater, and small hail. This storm was located 33 nm northwest of Middleton Island, moving west at 20 knots.
Instructions
Mariners can expect gusty winds, high waves, and heavy rains. Boaters should seek safe harbor immediately until this storm passes. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately.
Affected areas
- Gravel Point to Cape Cleare out to 15 NM
- Cape Suckling to Cape Cleare from 15 to 75 NM
Public contact
- Issuer
- NWS Anchorage AK
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~32s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M2Z17TZADN8FDKC5E092A4YY
- Identifier
- urn:oid:2.49.0.1.840.0.686eaffc3c7230570ca9bb55813b63f244a5e8d3.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Anchorage AK
- AWIPS ID
- CAPAFC
- NWWS sequence
- nwws_processor.5582
- WMO heading
- XOAK58
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- Alaska (AK)
- WMO bulletin number
- 58
Event codes
| Name | Value |
|---|---|
| SAME | SMW |
| NationalWeatherService | MAW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | SMWAFC |
| WMOidentifier | WHAK58 PAFC 200909 |
| eventMotionDescription | 2026-09-20T09:07:00-00:00...storm...109DEG...21KT...59.66,-147.2 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.PAFC.MA.W.0005.260920T0909Z-260920T0930Z/ |
| eventEndingTime | 2026-09-20T01:30:00-08:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Gravel Point to Cape Cleare out to 15 NM
- Cape Suckling to Cape Cleare from 15 to 75 NM
| Name | Value |
|---|---|
| SAME | 058711 |
| SAME | 058712 |
| UGC | PKZ711 |
| UGC | PKZ712 |
- Polygons
- 59.72,-146.99 59.55,-147.11 59.62,-147.78 59.87,-147.6 59.72,-146.99