Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains
An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >
| NWS Forecast for: Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border (LSZ264) Issued by: National Weather Service Marquette, MI Last Update: 400 AM EDT Thu Mar 19 2026 |  |
| Early This Morning: North winds 5 to 15 knots. Waves 1 to 3 feet. Today: North winds 5 to 15 knots becoming southeast less than 10 knots in the afternoon, then increasing to 5 to 15 knots late. Waves subsiding to calm to 2 feet. Tonight: Southeast winds 10 to 20 knots veering south after midnight, then becoming west 5 to 15 knots late. Snow showers, possibly mixed with rain through midnight, then a chance of rain showers, possibly mixed with snow after midnight. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. Friday: North winds 5 to 15 knots backing west late. Waves subsiding to calm to 2 feet. Friday Night: West winds 5 to 15 knots increasing to 10 to 20 knots after midnight. Waves building to 1 to 3 feet. Saturday: North winds 10 to 20 knots veering northeast by mid afternoon. A chance of rain showers through early afternoon. A chance of snow showers. Waves building to 2 to 4 feet. Saturday Night: Northeast winds 20 to 30 knots. A chance of snow showers. Freezing spray after midnight. Waves building to 5 to 8 feet occasionally to 10 feet. Sunday: Northeast winds 20 to 30 knots becoming north 10 to 20 knots. Freezing spray. Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet. Monday: Northwest winds 10 to 20 knots becoming southwest gales to 35 knots. Waves subsiding to calm to 2 feet, then building to 6 to 9 feet occasionally to 11 feet. | |
| Zone Forecast: Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border (LSZ264) | |
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