547 FZUS73 KDLH 151633 MWSDLH Marine Weather Statement National Weather Service Duluth MN 1133 AM CDT Tue Jul 15 2025 LSZ142-143-162-151715- 1133 AM CDT Tue Jul 15 2025 ...A STRONG THUNDERSTORM APPROACHING THE WATERS... The areas affected include... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... Silver Bay Harbor to Two Harbors MN... Taconite Harbor to Silver Bay Harbor MN... At 1132 AM CDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots and small hail. This thunderstorm was located near Castle Danger, or 28 nm northeast of Duluth Lift Bridge Channel, moving east at 25 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, lightning strikes, and heavy downpours. Boaters should seek safe harbor immediately until this storm passes. This strong thunderstorm will likely produce winds to around 30 knots, and could pose a serious hazard for boaters. A special marine warning may eventually be required when this strong thunderstorm reaches the nearshore waters. Boaters should consider heading for shore before this strong thunderstorm arrives. && LAT...LON 4715 9148 4731 9128 4737 9118 4727 9108 4714 9113 4709 9159 $$ JDS  571 FZUS73 KDLH 151644 MWSDLH Marine Weather Statement National Weather Service Duluth MN 1144 AM CDT Tue Jul 15 2025 LSZ146-151700- 1144 AM CDT Tue Jul 15 2025 ...A STRONG THUNDERSTORM OVER THE WATERS... The areas affected include... Port Wing to Sand Island WI... At 1144 AM CDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located over Siskwit Bay, or 39 nm east of Duluth Lift Bridge Channel, moving east at 35 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 4691 9127 4692 9080 4690 9080 4691 9081 4691 9096 4684 9110 4682 9118 4683 9121 4680 9131 $$ JDS  970 FZUS73 KDLH 151648 MWSDLH Marine Weather Statement National Weather Service Duluth MN 1148 AM CDT Tue Jul 15 2025 LSZ145-146-151715- 1148 AM CDT Tue Jul 15 2025 ...A STRONG THUNDERSTORM OVER THE WATERS... The areas affected include... Duluth MN to Port Wing WI... Port Wing to Sand Island WI... At 1147 AM CDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots and small hail. This thunderstorm was located 11 nm east of Superior Harbor, or 14 nm east of Duluth Lift Bridge Channel, moving east at 35 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. Mariners can expect gusty winds to around 30 knots, locally higher waves, lightning strikes, and heavy downpours. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 4673 9188 4685 9128 4682 9127 4674 9150 4667 9187 $$ JDS  465 FZUS73 KDLH 151657 MWSDLH Marine Weather Statement National Weather Service Duluth MN 1157 AM CDT Tue Jul 15 2025 LSZ121-147-148-150-162-151800- 1157 AM CDT Tue Jul 15 2025 ...A STRONG THUNDERSTORM APPROACHING THE WATERS... The areas affected include... Chequamegon Bay-Bayfield to Oak Point WI... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... Oak Point to Saxon Harbor WI... Outer Apostle Islands Beyond 5 NM from Mainland... Sand Island to Bayfield WI... At 1156 AM CDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots and small hail. This thunderstorm was located near Apostle Island Sea Caves, moving east at 35 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, lightning strikes, and heavy downpours. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 4677 9091 4687 9080 4690 9080 4693 9086 4696 9087 4704 9019 4673 9039 $$ JDS