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Chesapeake Bay weather for January 24: cold overnight then Saturday snow showers

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Brian's exclusive forecast for Baltimore, Annapolis, and northern Delmarva:

Tonight: Variable cloudiness and cold with a low around 12. South wind 10 to 15 with higher gusts. Wind chill values around zero.

Saturday: Mostly cloudy with occasional snow showers. Snow may accumulate from a dusting to one half inch. The high will be in the upper 20s. Southwest wind 10 to 15 with higher gusts. Wind chill values around 10 to 15 degrees.

Saturday Night: Cloudy early then becoming mostly clear with a low around 15. West wind 10 to 20 with wind chill values near zero.

Sunday: Clouds and sun. Windy at times. The high will be around 30. Southwest wind 10 to 20.

Sunday Night: Variable cloudiness and not as cold with a low around 20.

Monday: Variable cloudiness with a high around 32.

The extended outlook calls for a mostly sunny sky on Tuesday with a low from 7 to 12 and a high from 18 to 23. Clouds and sun with a snow shower possible on Wednesday. The low will be from 7 to 12 and a high from 20 to 25. Mostly sunny on Thursday with a low from 10 to 15 and a high from 25 to 30.

High pressure provided the Middle Atlantic region with a sunny, but cold day. After morning lows in the single digits around Baltimore and Annapolis, afternoon highs struggled to reach 20 degrees. The mercury will fall back to around 10 degrees by morning with clouds increasing from west to east, an indication of the next cold front that will sweep across the region and bring snow showers on Saturday. As the front progresses eastward during the day on Saturday, widespread snow showers will develop. The heaviest snow will fall across northern Maryland and southern Pennsylvania where an inch or two may accumulate by late afternoon To the south, a dusting to perhaps an inch may fall between Baltimore and Annapolis. With temperatures in the upper 20s during the afternoon, any snow that falls will cause roads and walkways to become snow-covered and slippery. Behind the front, a gusty west wind will make air temperatures in the mid teens feel more like zero by Sunday morning. Temperatures will actually begin to moderate on Sunday afternoon into Monday with overnight lows "only" around 20 on Monday morning and highs around freezing on Monday afternoon; however, much colder air will push across the bay region from Tuesday through Thursday of next week with perhaps the coldest air of the season. Lows overnight will once again fall into the single digits with daytime highs struggling to break out of the upper teens. There are some indications that a weather system may impact the coast by the middle of next week, but current computer forecast models keep the low too far away from Maryland to produce more than snow flurries or a snow shower. In summation, one of the coldest periods in the Middle Atlantic and New England states in many years will continue to hold firm through next week. On the bay, ice is expanding with many ponds, creeks, and rivers nearing a complete freeze-over.

On the Maryland portion of Chesapeake Bay, a Small Craft Advisory is in effect from 8 p.m. this evening through late tonight. A Gale Warning is in effect from Saturday morning through Saturday afternoon. Winds on Saturday will come out of the south at 10 to 20 knots with gusts over 30 knots and waves from 1 to 3 feet. Winds on Saturday night will come out of the west at 10 to 20 knots with gusts over 30 knots and waves from 1 to 4 feet. Winds on Sunday will come out of the west at 10 to 15 knots with gusts over 25 knots and waves from 1 to 3 feet. Marine information is provided as general guidance. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.

The average high temperature for January 24 is 41 degrees and the average low is 24 degrees. The records at Baltimore on this date are 74 degrees in 1967 and 1 degree in 1963. Today's sunrise will occur at 7:20 and the sunset will occur at 5:18. Weather data courtesy of the National Weather Service. For more weather updates, please visit my Chesapeake Bay Weather page on Facebook, and if you're heading to Ocean City feel free to check out my Ocean City MD Weather page on Facebook. You can also follow me on Twitter @chesbayweather.

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