709 

WHCA52 TJSJ 152312
SMWSJU
AMZ711-712-152345-
/O.NEW.TJSJ.MA.W.0010.260415T2312Z-260415T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service San Juan PR
712 PM AST Wed Apr 15 2026

The National Weather Service in San Juan has issued a

* Special Marine Warning for...
  Atlantic Waters of Puerto Rico AND USVI from 10 NM to 19.5N...
  Coastal Waters of Northern Puerto Rico out 10 NM...

* Until 745 PM AST.

* At 710 PM AST, a severe thunderstorm capable of producing
  waterspouts was located over Atlantic coastal and offshore waters,
  moving northwest at 15 knots.

  HAZARD...Waterspouts and wind gusts 34 knots or greater.

  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.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor immediately as gusty winds and high waves are
expected.

Thunderstorms can produce sudden waterspouts. Waterspouts can easily
overturn boats and create locally hazardous seas. Seek safe harbor
immediately.

Frequent lightning is occurring with this storm. If caught on the
open water stay below deck if possible, keep away from ungrounded
metal objects.

&&

LAT...LON 1848 6610 1857 6671 1938 6715 1944 6615
TIME...MOT...LOC 2310Z 140DEG 26KT 1907 6663

WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...>34KTS

$$

MNG






761 

WHUS51 KBUF 152316
SMWBUF
LEZ020-LOZ030-160015-
/O.NEW.KBUF.MA.W.0009.260415T2316Z-260416T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Buffalo NY
716 PM EDT Wed Apr 15 2026

The National Weather Service in Buffalo has issued a

* Special Marine Warning for...
  The Upper and Lower Niagara River and Buffalo Harbor...

* Until 815 PM EDT.

* At 715 PM EDT, severe thunderstorms were located along a line
  extending from 10 nm west of Lewiston to 21 nm southwest of Grand
  Island to 15 nm northwest of Lake Erie Beach to 11 nm northwest of
  Sunset Bay, moving east at 45 knots.

  HAZARD...Wind gusts to 40 knots and large hail.

  SOURCE...Radar.

  IMPACT...Small craft could be damaged in briefly higher winds and
           suddenly higher waves. Large hail could result in
           structural damage.

* Locations impacted include...
  Youngstown, Grand Island, and Lewiston.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

Frequent lightning is occurring with these storms. If caught on the
open water stay below deck if possible, keep away from ungrounded
metal objects.

&&

LAT...LON 4308 7907 4312 7907 4314 7904 4326 7906
      4324 7900 4311 7901 4304 7883 4300 7884
      4298 7888 4294 7886 4292 7887 4291 7891
      4296 7893 4296 7896 4299 7902 4302 7902
      4306 7900
TIME...MOT...LOC 2315Z 258DEG 44KT 4311 7927 4287 7940 4281 7935 4267
7936

HAIL...>.75IN
WIND...40KTS

$$

Lupo