710 

WHUS53 KMKX 211909

SMWMKX

LMZ675-211930-

/O.NEW.KMKX.MA.W.0023.260421T1909Z-260421T1930Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Special Marine Warning

National Weather Service Milwaukee/Sullivan WI

209 PM CDT Tue Apr 21 2026



The National Weather Service in Milwaukee/Sullivan has issued a



* Special Marine Warning for...

  Lake Michigan from Wind Point WI TO Winthrop Harbor IL 5 nm off

  shore to mid lake...



* Until 230 PM CDT.



* At 209 PM CDT, a severe thunderstorm was located 23 nm east of

  Winthrop Harbor, moving east at 40 knots.



  HAZARD...Wind gusts 34 knots or greater 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.



* The severe thunderstorm will remain over mainly open waters.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Move to safe harbor until hazardous weather passes.



&&



LAT...LON 4246 8719 4250 8737 4259 8736 4257 8703

      4246 8702

TIME...MOT...LOC 1909Z 279DEG 39KT 4254 8727 



HAIL...>.75IN

WIND...>34KTS



$$



CMILLER






000 

WHUS56 KLOX 211959

SMWLOX

PZZ645-670-673-212100-

/O.NEW.KLOX.MA.W.0055.260421T1959Z-260421T2100Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Special Marine Warning

National Weather Service OXNARD CA

1259 PM PDT Tue Apr 21 2026



The National Weather Service in OXNARD has issued a



* Special Marine Warning for...

  The waters off the Central Coast from Point Piedras Blancas to 

  Point Arguello and out to 60 NM.



* Until 200 PM PDT.



* At 1255 PM PDT, a line of thunderstorms, which have already 

  produced observed winds gusts over 30 knots, extended from 8 nm 

  west of Cape San Martin to 60 nm west of Point Sal, moving 

  northeast at 25 knots. 



  HAZARD...Wind gusts 34 knots or greater. Waterpouts are possible.



  SOURCE...Radar and Weather Buoy.



  IMPACT...Waterspouts can easily overturn boats and create locally 

           hazardous seas. Small craft could be damaged in briefly 

           higher winds and suddenly higher waves.



* Severe thunderstorms will be near...

  Point Piedras Blancas around 140 PM PDT.



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 3564 12117 3546 12100 3543 12088 3534 12083

      3524 12090 3516 12077 3518 12073 3514 12065

      3505 12063 3491 12067 3487 12063 3461 12105

      3436 12182 3446 12186 3465 12186 3492 12206

      3566 12185 3567 12127

TIME...MOT...LOC 1955Z 235DEG 24KT 3589 12163 3475 12183 



WATERSPOUT...POSSIBLE

HAIL...0.00IN

WIND...>34KTS



$$



RK