Special Marine Warning
NWS Tallahassee FL ยท US
Details
Special Marine Warning Issued September 20 At 9:44AM EDT Until September 20 At 11:15AM EDT By NWS Tallahassee FL
- Event
- Special Marine Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Description
Overview
SMWTAE The National Weather Service in Tallahassee has issued a * Special Marine Warning for... Waters from Suwannee River to Apalachicola FL from 20 to 60 NM... * Until 1115 AM EDT. * At 944 AM EDT, strong thunderstorms capable of producing waterspouts were located along a line extending from 20 nm south of S Tower to 15 nm south of V Tower to 29 nm south of Buckeye Reef, moving southwest at 10 knots.
Hazard
Waterspouts and wind gusts 34 knots or greater.
Source
Radar indicated.
Impacts
Waterspouts can quickly form and capsize boats...damage vessels...and create suddenly higher waves. Make sure all on board are in a secure location and wearing life jackets. Expect wind gusts in excess of 34 knots...suddenly higher waves...frequent lightning...and heavy downpours. Make sure all on board are wearing life jackets. * Severe thunderstorms will remain over mainly open waters.
Instructions
Move to safe harbor until hazardous weather passes. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects.
Affected areas
- Waters from Suwannee River to Apalachicola FL from 20 to 60 NM
Public contact
- Issuer
- NWS Tallahassee FL
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~53s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M2ZH01B2HNMRT6SPSVVM20MA
- Identifier
- urn:oid:2.49.0.1.840.0.a7f146c5446bd42f0c287d68bc0ba17f1c8fb188.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Tallahassee FL
- AWIPS ID
- CAPTAE
- NWWS sequence
- nwws_processor.2426
- 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 | SMWTAE |
| WMOidentifier | WHUS52 KTAE 201344 |
| eventMotionDescription | 2026-09-20T13:44:00-00:00...storm...065DEG...9KT...28.95,-84.6 29.16,-84.3 29.17,-84.0 |
| waterspoutDetection | POSSIBLE |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KTAE.MA.W.0394.260920T1344Z-260920T1515Z/ |
| eventEndingTime | 2026-09-20T11:15:00-04:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Waters from Suwannee River to Apalachicola FL from 20 to 60 NM
| Name | Value |
|---|---|
| SAME | 077775 |
| UGC | GMZ775 |
- Polygons
- 28.63,-84.71 28.83,-84.85 29.03,-84.71 29.21,-84.65 29.38,-84.17 29.37,-83.95 29.23,-83.86 28.92,-84.11 28.94,-84.12 28.89,-84.16 28.89,-84.17 28.76,-84.42 28.69,-84.51 28.63,-84.71