Special Marine Warning
NWS Key West FL ยท US
Details
Special Marine Warning Issued September 19 At 5:24AM EDT Until September 19 At 6:00AM EDT By NWS Key West FL
- Event
- Special Marine Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Description
Overview
SMWKEY The National Weather Service in Key West has issued a * Special Marine Warning for... Straits of Florida from Craig Key to Halfmoon Shoal 20 to 60 nm out... * Until 600 AM EDT. * At 524 AM EDT, a strong thunderstorm with possible waterspouts was located 37 nm southeast of Wood's Wall East Crack, moving southeast at 5 knots.
Hazard
Waterspouts and wind gusts 34 knots or greater.
Source
National Weather Service Meteorologist.
Impacts
Waterspouts can quickly form and capsize boats, cause considerable damage to vessels and create suddenly higher waves. Expect wind gusts in excess of 34 knots, suddenly higher waves, frequent lightning, and heavy downpours. * The strong thunderstorm will remain over mainly open waters.
Instructions
Prepare for wind gusts in excess of 34 knots, steep and fast-building seas, frequent lightning, and blinding downpours. Stay low or go below, and make sure all on board are wearing life jackets. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately.
Affected areas
- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out
- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out
Public contact
- Issuer
- NWS Key West FL
- 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
- 01M2WFQ5TXHBKBP945HYXEGFWK
- Identifier
- urn:oid:2.49.0.1.840.0.a5b0e4ab8583a711b9f88f7efe05e903e2301f50.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Key West FL
- AWIPS ID
- CAPKEY
- NWWS sequence
- nwws_processor.5989
- WMO heading
- XOUS52
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 52
Event codes
| Name | Value |
|---|---|
| SAME | SMW |
| NationalWeatherService | MAW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | SMWKEY |
| WMOidentifier | WHUS52 KKEY 190924 |
| eventMotionDescription | 2026-09-19T09:24:00-00:00...storm...314DEG...6KT...23.85,-81.06 |
| waterspoutDetection | POSSIBLE |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KKEY.MA.W.0285.260919T0924Z-260919T1000Z/ |
| eventEndingTime | 2026-09-19T06:00:00-04:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out
- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out
| Name | Value |
|---|---|
| SAME | 077073 |
| SAME | 077074 |
| UGC | GMZ073 |
| UGC | GMZ074 |
- Polygons
- 23.85,-81.19 23.98,-81.05 23.84,-80.78 23.7,-80.92 23.69,-80.97 23.67,-81.05 23.85,-81.19