Heavy rain and mountain snow across the northwestern U.S. on Saturday
Another Pacific system will impact the West Coast today. Heavy rainfall could lead to flash flooding, river and small stream flooding as well as mudslides and debris flows, especially over burn scars. Strong winds and heavy elevation snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
Hazardous Weather Conditions
4NM NE Nantucket MA
Marine Point Forecast [NOTICE]
- SynopsisHIGH PRES WILL SETUP ACROSS QUEBEC THIS WEEKEND WILL THEN SHIFT OVER
NOVA SCOTIA AND THE CANADIAN MARITIMES MON AND TUE. A RAPIDLY
INTENSIFYING LOW PRES SYSTEM WILL THEN PASS WELL TO OUR WEST ACROSS
THE GREAT LAKES WED INTO WED NIGHT. THIS WILL BRING A PERIOD OF
STRONG WINDS AND HIGH SEAS TO THE WATERS.
FOR INFORMATION ON POSSIBLE HAZARDOUS WEATHER BEYOND THE 24-36 HOUR
FORECAST PERIOD...PLEASE VISIT WWW.WEATHER.GOV/BOSTON AND FOLLOW THE
CURRENT HAZARDS LINK ABOVE THE MAP ON THE LEFT.
- This Afternoon NNE wind 5 to 8 kt. A slight chance of showers. Seas 1 ft or less.
- Tonight NE wind 5 to 8 kt. A chance of showers, mainly after 3am. Seas around 1 ft.
- Sunday NE wind 6 to 8 kt. A chance of showers, mainly before 3pm, then a chance of sprinkles after 5pm. Seas around 1 ft.
- Sunday Night NNE wind 6 to 9 kt increasing to 9 to 12 kt after midnight. A chance of sprinkles before 8pm. Seas 1 to 2 ft.
- Monday ENE wind 10 to 12 kt becoming N in the afternoon. Mostly cloudy. Seas around 2 ft.
- Monday Night N wind 8 to 11 kt becoming E 12 to 15 kt after midnight. A slight chance of showers after midnight. Seas around 2 ft.
- Tuesday E wind 12 to 17 kt, with gusts as high as 23 kt. A chance of showers after 11am. Seas 2 to 3 ft.
- Tuesday Night ESE wind 15 to 18 kt, with gusts as high as 28 kt. A chance of showers. Seas around 4 ft.
- Wednesday SE wind 20 to 23 kt increasing to 23 to 26 kt in the afternoon. Winds could gust as high as 34 kt. Rain. Seas around 5 ft.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area.
Forecast information for a larger area can be found within the zone
forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc.
These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
HOURLY WEATHER GRAPH
NATIONAL DIGITAL FORECAST DATABASE