National Weather Service United States Department of Commerce

Snow for Ohio Valley and northern mid-Atlantic Sunday into Monday

A clipper system will strengthen as it moves from the Midwest to the Ohio Valley on Sunday. Snow, some heavy, will spread from the Ohio Valley into parts of the lower Great Lakes and northern mid-Atlantic Sunday into Monday morning. The heaviest snow is expected from central Ohio into southwest Pennsylvania. Winter Weather Advisories are in effect for many of these locations.
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Hazardous Weather Conditions

Petersburg AK

Marine Point Forecast [NOTICE]

Tonight

Heavy Rain

ESE 15kt
< 1ft

Low: 40 °F

Sunday

Showers

SW 10kt
< 1ft

High: 43 °F

Sunday
Night

Showers Likely

SW 10ktWinds Decreasing
< 1ft

Low: 31 °F

Monday

Partly Sunny

NE 10kt
< 1ft

High: 35 °F

Monday
Night

Mostly Cloudy

Light Wind
< 1ft

Low: 24 °F

Tuesday

Mostly Cloudy

Light Wind
< 1ft

High: 35 °F

Tuesday
Night

Chance Rain/Snow

NE 10kt
< 1ft

Low: 32 °F

Wednesday

Rain

ENE 25kt
< 1ft

High: 39 °F

Wednesday
Night

Rain

NE 20kt
< 1ft

Low: 35 °F

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:39 pm AKST Jan 24, 2015
Forecast Valid: 8pm AKST Jan 24, 2015-6pm AKST Jan 31, 2015

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Detailed Forecast

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION EXPECTED. SEA FORECASTS REPRESENT THE AVERAGE OF THE HIGHEST ONE-THIRD OF THE COMBINED WINDWAVE AND SWELL HEIGHT.

  • SynopsisA LOW WILL STRENGTHEN TO STORM FORCE AS IT MOVES NORTH ACROSS THE SE GULF SAT EVENING. THE LOW CENTER WILL CROSS OVER BARANOF ISLAND OVERNIGHT THEN INTO NORTHERN CANADA. WINDS THEN SHIFT TO THE SW ACROSS THE GULF ALONG WITH A TRANSITION TO SHOWERS. THE PRESSURE PATTERN WEAKENS SUN NIGHT INTO MON UNDER HIGH PRESSURE.
  • Tonight ESE wind 10 to 15 kt becoming SSW after midnight. Showers. The rain could be heavy at times. Seas 1 ft or less.
  • Sunday SW wind around 10 kt. Showers. Seas 1 ft or less.
  • Sunday Night SW wind 5 to 10 kt becoming variable and less than 5 kt in the evening. Showers likely, mainly before midnight. Seas 1 ft or less.
  • Monday NE wind 5 to 10 kt. Partly sunny. Seas 1 ft or less.
  • Monday Night Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
  • Tuesday Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
  • Tuesday Night SE wind around 10 kt becoming NE in the evening. A chance of rain before midnight, then a chance of snow. Seas 1 ft or less.
  • Wednesday ENE wind around 25 kt, with gusts as high as 35 kt. Rain. Seas 1 ft or less.
  • Wednesday Night NE wind around 20 kt, with gusts as high as 30 kt. Rain. Seas 1 ft or less.
*Notices:
  1. 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.
  2. 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.