National Weather Service United States Department of Commerce

Severe storms and heavy rain possible from mid-South to Upstate New York on Tuesday

Thunderstorms are expected to develop along and ahead of a cold front from the Tennessee Valley to Upstate New York on Tuesday. The storms will be capable of producing damaging wind gusts and heavy rainfall that could lead to isolated flash flooding.
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Hazardous Weather Conditions

Last Update: 247 AM CDT TUE SEP 2 2014

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Lake Michigan from Sheboygan to Port Washington WI 5NM off shore to Mid Lake

Marine Zone Forecast

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 29.2 INCHES ACROSS FAR SOUTHERN HUDSON BAY WILL MOVE FURTHER NORTHEAST AWAY FROM THE LAKES. THE COOL FRONT THAT PASSED THE LAKE VERY EARLY THIS MORNING WILL WEAKEN AND DIMINISH...WITH WINDS RETURNING SOUTHERLY AGAIN BY AFTERNOON. WEAK HIGH PRESSURE OF 30.1 INCHES WILL MOVE ACROSS THE OHIO RIVER VALLEY TONIGHT...NOT INFLUENCING THE LAKE MUCH. LOW PRESSURE OF 29.6 INCHES WILL ENTER THE NORTHERN PLAINS ON THURSDAY MORNING AND MOVE TO JUST NORTH OF THE GREAT LAKES BY THURSDAY NIGHT WHILE DEEPENING TO 29.4 INCHES. THIS WILL STEER A STRONG COLD FRONT DOWN THE LAKE DURING FRIDAY. HIGH PRESSURE OF 30.2 INCHES WILL THEN BUILD ACROSS THE REGION BY SATURDAY NIGHT.
  • Today West winds 10 to 15 kt becoming southwest around 10 kt by late morning...then becoming south in the afternoon. Slight chance of showers and thunderstorms from late morning on. Waves 1 to 2 ft.
  • Tonight Southwest winds 10 to 15 kt. Waves 1 to 2 ft.
  • Wednesday South winds 10 to 15 kt increasing to 10 to 20 kt by early afternoon. Waves 1 to 3 ft.
  • Wednesday Night South winds 15 to 25 kt. Chance of showers and thunderstorms...mainly overnight. Waves building to 3 to 5 ft occasionally to 7 ft.
  • Thursday South winds 20 to 25 kt. Chance of showers and thunderstorms...mainly in the morning. Waves 4 to 6 ft occasionally to 8 ft.
  • Thursday Night Southwest winds 15 to 25 kt diminishing to 10 to 20 kt. Chance of showers and thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.
  • Friday West winds 15 to 20 kt becoming north 15 to 25 kt. Chance of showers and thunderstorms. Waves 3 to 5 ft occasionally to 7 ft.
  • Saturday North winds 15 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft.



Additional Forecasts and Information

Zone Area Forecast for Lake Michigan from Sheboygan to Port Washington WI 5NM off shore to Mid Lake
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