773
WHUS52 KJAX 182127
SMWJAX
AMZ454-182230-
/O.NEW.KJAX.MA.W.0201.260818T2127Z-260818T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Jacksonville FL
527 PM EDT Tue Aug 18 2026

The National Weather Service in Jacksonville has issued a

* Special Marine Warning for...
  Coastal waters from St. Augustine to Flagler Beach FL out 20 NM...

* Until 630 PM EDT.

* At 527 PM EDT, a severe thunderstorm capable of producing
  waterspouts was located over Saint Augustine Beach, or near Saint
  Augustine, moving south at 20 knots.

  HAZARD...Waterspouts, wind gusts to 40 knots, and small hail.

  SOURCE...Radar.

  IMPACT...Waterspouts can easily overturn boats and create locally
           hazardous seas. Small craft could be damaged in briefly
           higher winds and suddenly higher waves.

* Locations impacted include...
  Nine Mile Reef, Saint Augustine, Saint Augustine Beach, Crescent
  Beach, Beverly Beach, Butler Beach, Big Georges Reef, Marineland,
  Palm Coast, and Vilano Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor immediately as gusty winds and high waves are
expected. If your vessel is caught offshore, immediately secure for
heavy weather. Ensure all crew members are wearing USCG approved Type
I life jackets and nonessential crew are below decks. Deploy jack
lines and harnesses if available. Check life saving equipment,
including batteries on handheld radios, for readiness.

Thunderstorms can produce sudden waterspouts. Waterspouts can easily
overturn boats and create locally hazardous seas. Seek safe harbor
immediately. If your vessel is caught offshore, immediately secure
for heavy weather. Ensure all crew members are wearing USCG approved
Type I life jackets and nonessential crew are below decks. Deploy
jack lines and harnesses if available. Check life saving equipment,
including batteries on handheld radios, for readiness.

&&

LAT...LON 2946 8116 2953 8120 2955 8124 2963 8125
      2965 8128 2973 8128 2981 8135 2992 8137
      2992 8131 2991 8131 2992 8130 2991 8129
      2991 8102 2948 8084
TIME...MOT...LOC 2127Z 340DEG 18KT 2983 8123

WATERSPOUT...POSSIBLE
HAIL...<.75IN
WIND...40KTS

$$

HESS