426 

WHUS51 KBOX 150024
SMWBOX
ANZ230-231-250-251-270-150130-
/O.NEW.KBOX.MA.W.0001.260415T0024Z-260415T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Boston/Norton MA
824 PM EDT Tue Apr 14 2026

The National Weather Service in Boston/Norton has issued a

* Special Marine Warning for...
  Boston Harbor...
  Cape Cod Bay...
  Coastal waters east of Ipswich Bay and the Stellwagen Bank National
  Marine Sanctuary...
  Massachusetts Bay and Ipswich Bay...
  Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM
  offshore...

* Until 930 PM EDT.

* At 823 PM EDT, a line of heavy showers and gusty northwest winds
  was located along a line extending from 6 nm northeast of Plum
  Island to 19 nm west of Boston, moving east at 45 knots.

  HAZARD...Wind gusts to 40 knots.

  SOURCE...Radar.

  IMPACT...Small craft could be damaged in briefly higher winds and
           suddenly higher waves.

* Locations impacted include...
  Eastern Point Ma, The Coastal Waters East Of Cape Ann, Boston
  Light, Mass Bay Buoy 44029, Marblehead Neck, Broad Sound, The Mouth
  Of The Merrimack River, Green Harbor, Gurnet Point, Boston Harbor,
  Beverly Harbor, Quincy Harbor, Plum Island, Stellwagen Bank, Sandy
  Bay, The Coastal Waters East Of Boston Harbor, Minot Light, Ocean
  Bluff-Brant Rock, Boston Buoy 44013, and Ipswich Bay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek safe shelter, mariners can expect gusty winds and increasing
waves.

&&

LAT...LON 4259 6966 4193 7052 4199 7074 4208 7071
      4221 7078 4223 7084 4220 7099 4226 7100
      4229 7109 4240 7111 4241 7102 4249 7093
      4258 7094 4261 7082 4265 7088 4276 7091
      4282 7082 4279 7081 4282 7056
TIME...MOT...LOC 0023Z 287DEG 43KT 4282 7067 4232 7152

HAIL...0.00IN
WIND...40KTS

$$

Loconto






580 

WHUS53 KGRR 150048
SMWGRR
LMZ846>848-870-872-874-150245-
/O.NEW.KGRR.MA.W.0015.260415T0048Z-260415T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Grand Rapids MI
848 PM EDT Tue Apr 14 2026

The National Weather Service in Grand Rapids has issued a

* Special Marine Warning for...
  Nearshore and Open Waters from Holland to Pentwater MI...

* Until 1045 PM EDT.

* At 848 PM EDT, strong thunderstorms were located along a line
  extending from 25 nm west of Little Sable Point to 45 nm west of
  Grand Haven Light, moving east at 35 knots.

  HAZARD...Wind gusts to nearly 50 knots and small hail.

  SOURCE...Radar.

  IMPACT...Small craft could be damaged in briefly higher winds and
           suddenly higher waves.

* Locations impacted include...
  White Lake Pier Heads, Holland Light, Little Sable Point Light,
  Port Sheldon Harbor, Grand Haven Light, and Muskegon Light.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 4365 8713 4378 8644 4368 8653 4363 8654
      4334 8641 4308 8625 4292 8621 4277 8621
      4278 8706 4339 8715
TIME...MOT...LOC 0046Z 265DEG 36KT 4349 8713 4308 8735

HAIL...<.75IN
WIND...49KTS

$$

CAS






929 

WHUS53 KAPX 150050
SMWAPX
LMZ346-366-150115-
/O.NEW.KAPX.MA.W.0009.260415T0050Z-260415T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Gaylord MI
850 PM EDT Tue Apr 14 2026

The National Weather Service in Gaylord has issued a

* Special Marine Warning for...
  Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid
  Lake...
  Manistee to Point Betsie MI...

* Until 915 PM EDT.

* At 850 PM EDT, a strong thunderstorm was located 9 nm northwest of
  Manistee Light, moving northeast at 50 knots.

  HAZARD...Wind gusts 34 knots or greater and small hail.

  SOURCE...Radar.

  IMPACT...Small craft could be damaged in briefly higher winds and
           suddenly higher waves.

* Locations impacted include...
  Arcadia, Point Betsie, Pierport, Portage Lake, Williamsport,
  Manistee, Frankfort, and Manistee Light.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

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 4473 8676 4470 8634 4472 8633 4471 8609
      4467 8619 4456 8616 4441 8619 4422 8630
      4423 8635 4426 8634 4428 8642 4422 8696
TIME...MOT...LOC 0050Z 238DEG 49KT 4433 8655

HAIL...<.75IN
WIND...>34KTS

$$

ELD