864
WHUS53 KDTX 211840
SMWDTX
LCZ422-LHZ443-211930-
/O.NEW.KDTX.MA.W.0061.260721T1840Z-260721T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Detroit/Pontiac MI
240 PM EDT Tue Jul 21 2026

The National Weather Service in Detroit/Pontiac has issued a

* Special Marine Warning for...
  Port Sanilac to Port Huron MI...
  St. Clair River...

* Until 330 PM EDT.

* At 240 PM EDT, a strong thunderstorm was located near Port Huron,
  moving southeast at 25 knots.

  HAZARD...Wind gusts 34 knots or greater.

  SOURCE...Radar.

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

* The strong thunderstorm will be near...
  Port Huron around 245 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 4300 8242 4299 8242 4297 8241 4292 8246
      4280 8248 4282 8251 4289 8252 4301 8247
      4309 8250 4308 8238
TIME...MOT...LOC 1840Z 296DEG 27KT 4293 8252

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

$$

MV