Unseasonably cold temperatures spreading into central U.S.
A strong cold front will usher a much colder air mass into the central and eastern U.S. for the end of the work week. Temperatures will be 10 to 20 degrees below average in some areas. Rain and snow will be possible across the Great Lakes on Friday as the system crosses the area. Heavy snow is possible in the central Appalachians Friday night.
Hazardous Weather Conditions
25NM WSW Grand Haven MI
Marine Point Forecast [NOTICE]
High and low forecast temperature values represent air temperature.
Water temperature forecast is experimental.
Associated Zone Forecast which includes this point
Last Update: 5:02 am CDT Oct 31, 2014
Forecast Valid: 6am CDT Oct 31, 2014-6pm CST Nov 6, 2014
WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES WHICH WILL OCCASIONALLY BE ENCOUNTERED.
- SynopsisLOW PRESSURE OF 29.9 INCHES OVER LAKE HURON EARLY THIS
MORNING WILL TRACK SOUTHEAST TO LAKE ERIE BY MIDDAY AND MERGE WITH
SURFACE LOW PRESSURE OFF THE CAROLINA COAST SATURDAY MORNING.
MEANWHILE...VERY STRONG HIGH PRESSURE OF 30.7 INCHES SPREAD ACROSS
THE NORTHERN PLAINS AND MANITOBA WILL QUICKLY MOVE SOUTHEAST INTO
THE MID AND UPPER MISSISSIPPI RIVER VALLEY TODAY. A SHARP COLD FRONT
WILL PUSH DOWN THE LAKE EARLY THIS MORNING BRINGING A SURGE OF COLD
AIR AND RAPIDLY INCREASING NORTHERLY WINDS. WINDS WILL LIKELY REACH
STORM FORCE ACROSS MOST OF THE LAKE BY MID MORNING BEFORE EASING TO
GALES THIS EVENING AND FURTHER DIMINISHING SATURDAY MORNING AS HIGH
PRESSURE MOVES OVER LAKE MICHIGAN. THE HIGH WILL STEADILY MOVE
SOUTHEAST OF THE LAKE SUNDAY WHILE LOW PRESSURE MOVES NORTHEAST
ACROSS THE NORTHERN PLAINS. ANOTHER LOW IS EXPECTED TO TRACK FROM
THE SOUTHERN PLAINS AND ACROSS LAKE MICHIGAN TUESDAY.
- Today N wind 25 to 30 kt increasing to 30 to 35 kt in the morning. Winds could gust as high as 50 kt. Rain and snow showers, mainly before 1pm. Some thunder is also possible. Waves 6 ft building to 18 ft.
- Tonight N wind 25 to 30 kt, with gusts as high as 40 kt. Some thunder is also possible. Waves 18 ft subsiding to 11 ft.
- Saturday NNE wind 15 to 20 kt, with gusts as high as 25 kt. Sunny. Waves 10 ft subsiding to 5 ft.
- Saturday Night N wind 5 to 10 kt becoming SE after midnight. Mostly clear. Waves 5 ft subsiding to 1 ft or less.
- Sunday SSW wind 5 to 10 kt increasing to 15 to 20 kt in the afternoon. Mostly sunny. Waves 1 ft or less building to 4 ft.
- Sunday Night SSW wind around 20 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 5 ft building to 8 ft.
- Monday SSW wind 15 to 20 kt, with gusts as high as 25 kt. Partly sunny. Waves 6 to 8 ft. occasionally to 10ft.
- Monday Night SW wind around 15 kt, with gusts as high as 20 kt. Showers likely. Waves around 5 ft.
- Tuesday SW wind around 15 kt becoming W in the afternoon. Winds could gust as high as 20 kt. Showers likely. Waves around 5 ft.
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