Winter Returns Across the Northern Tier; Record Warmth for the Southwest
A large high pressure system will usher in cold air for this first day of March across the northern Plains, Great Lakes, Northeast and mid-Atlantic. Some wintry precipitation may evolve across the mid-Mississippi Valley, Ohio Valley and mid-Atlantic through Monday. Meanwhile, record warmth will spread across the Southwest, southern Plains through early this week. Read More >
| NWS Forecast for: Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM (GMZ055) Issued by: National Weather Service Key West, FL Last Update: 1030 AM EST Sun Mar 1 2026 | |
| This Afternoon: Variable winds 5 to 10 knots, becoming northeast. Seas around 1 foot. Wave detail: northeast 1 foot at 3 seconds. Isolated showers and thunderstorms. Tonight: Northeast to east winds 5 to 10 knots, increasing to near 15 knots. Seas building to 2 to 4 feet. Wave detail: northeast to east 2 feet at 4 seconds. Scattered showers. Monday: Northeast to east winds near 15 knots. Seas 2 to 4 feet, building to 3 to 5 feet. Wave detail: northeast to east 3 feet at 5 seconds. Isolated showers. Monday Night: Northeast to east winds 15 to 20 knots. Seas building to 4 to 6 feet. Scattered showers. Tuesday: Northeast to east winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 7 feet. Isolated showers. Tuesday Night: Northeast to east winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 7 feet. Isolated showers. Wednesday: East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. Wednesday Night: East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. Thursday: East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. Thursday Night: East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. | |
| Zone Forecast: Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM (GMZ055) | |
Visit your local NWS office at: https://www.weather.gov/key |